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تثاقف طرز العمارة في العراق : عمارة مساكن النخبة خلال حقبة الحكم العثماني المتاخر (1830 - 1917) Acculturation of Architectural Styles In Iraq Architecture of The Elite Houses During The Late Ottoman Rule (1830 - 1917)

اسم المؤلف: بريزات قاسم حسين فهمي
اسم المشرف: اريج كريم مجيد السدخان
الموضوع العام: الهندسة المعمارية
السنة: 2015
الموضوع الدقيق: هندسة العمارة
الدرجة: دكتوراه
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: Culture is defined as a world view of a nation or a group.This world view is reflected in values and styles of life and activities specific to that nation or group. Architecture, on the other hand, is considered one of the most distinctive fields for the expression of these views. Architecture, then is a manifestation of culture and at the same time a reflection of it.Generally different propositions show that culture changes because of many factors, and acculturation has emerged out of important operations which lead to cultural change as a result of contact between different societies or cultures.Since the cultural environment with its varying effects plays a major role in the formulation of architectural products, and owing to the increase in awareness all over the world in culture and cultural process such as acculturation and scarcity of architectural research on such topics at both Arab and local levels, it is felt that there is a need for a study on acculturation and architecture as a general topic for research.From a review of literature on acculturation and architecture during different historical periods, it becomes obvious that acculturation is always related to architecture and has effect on it and plays a role in formulating its styles wherever there was cultural contact between two or more cultures.It has become clear also that architectural products in Iraq were not immune to the effects of acculturation during the time period of Iraq came into contact with other cultures among which was ottoman _Turkish Culture. The research specific topic is, thus, defined by acculturation and architectural styles during the ottoman rule in Iraq.After the literature on the topic under consideration is reviewed, the research problem is defined as follows : There is need for knowledge to explore the nature, study and analyze of acculturation in architecture in general, and to specify its results at the level of house architecture style in Baghdad city during the late Ottoman rule in Iraq. The research aim is defined by : 1 - formulation of a more comprehensive framework of acculturation in such a way as to define its nature in architecture, study, and analyze it at the level of anyarchitecture especially at the house architecture style level. 2 - Formulation of an analytical, comparative and detailed system to study the results of acculturation at the house architecture style level. 3 - Identifying the results of acculturation at the house architecture style level during the late Ottoman rule in Iraq. This item covers a definite detailed aim represented by identifying the results of acculturation at the level of surface structure of the style of the elite houses architecture during the late Ottoman reign in Iraq.The research procedure is represented by the following steps : First, building a theoretical framework on acculturation in architecture based on previous architectural studies which are dealt with the concept, whether directly or indirectly, and support it by current propositions on the subject obtained from fields other than architecture. In addition the frame work is reinforced by studies on culture (the concept dimensions related to acculturation and architecture). All the previous steps should be accomplished so that the nature of acculturation in architecture in general can be further explored, and acculturation could be studied, analyzed and its results identified particularly at the level of house architecture style. Second, studying the dimensions and aspects of the concept of style in architecture and its relation with the concept of acculturation so that indicators and vocabularies of theoretical framework of acculturation in architecture are supported. No doubt, this will help the study of acculturation results at the level of house architecture style. Third, concluding the nature of acculturation in architecture, and the main indicators in its study and analysis (that is theoretical framework in its final detailed from). In addition a comparative and detailed system should be put forward to study the results of acculturation on the style of house architecture resulting from acculturation. Fourth, empirical study should be made to identify the results of acculturation on the level of style of house architecture in Baghdad during the late ottoman rule and to specify the application main requirements. Fifth, drawing and analyzing the results. Finally, drawing the final conclusions.The concluded theoretical framework has shown two fundamental points. They are the nature of acculturation in architecture and its most important indicators to study and analyze acculturation in architecture. As for the first dimension, it includes the following twoitems : definition of acculturation in architecture, and the path and stages of acculturation proses in architecture. The second dimension covers indicators to study and analyze acculturation in architecture which includes the following branch indicators : cultural indicators of contacted groups, communication indicators which lead to acculturation results, acculturation proses indicators, and acculturation results indicators. Moreover, an analyzing comparative and detailed system has been suggested, consisting of five stages to identify the results on the level of the house architectural style in its final detailed form.On the other hand, the empirical study involves the study of acculturation results at the level of the style of houses architecture of two types of elites : Iraqi origin and Turkish origin which existed in Baghdad during the late Ottoman rule in Iraq 1830 - 1917 AD. The Ottoman rule of Iraq lasted about five centuries and ended with end of First World War.After the basic application requirements are stated, the practical study and result analysis are done and a number of conclusions are drawn. The conclusions are divided into two groups. The first one deals with the theoretical part, so the research, In general, was able to reach to a theoretical formula which is more accurate, comprehensive, and obvious about the nature of acculturation in architecture so that it can be studied and analyzed better than the previous knowledge. In addition the research was able to introduce a system for analysis of architectural styles which is comparatively more comprehensive than previous analytical systems. The second group is concerned with the practical study in which the research was able in general to put forward a set of detailed conclusions, but it was generally possible to reach a summary of acculturation results resulting from the long term and comprehensive cultural contact between Iraqi and Turkish Ottoman cultures at the level of architectural style of elite houses in Baghdad during the late Ottoman rule of Iraq. These results are represented by energetic maintenance of the main characteristics of the architectural identity of the style of the elite houses architecture. However this maintenance began to decline (the start of medium sized maintenance) beginning at the end of the period studied. The superficial characteristics of the architectural identity were a field in which interaction, effect and cultural exchange of medium depth took place during the period studied.

المعطيات الفكرية والشكلية للعمارة الرقمية واستدامتها Theoretical And Formal Constituents of The Digital Architecture And Its Sustainability

اسم المؤلف: علياء احمد محمود رشيد
اسم المشرف: اريج كريم مجيد السدخان
الموضوع العام: الهندسة المعمارية
السنة: 2014
الموضوع الدقيق: هندسة العمارة
الدرجة: دكتوراه
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: يرتبط تطور مفهوم الاستدامة في التصميم العماري المعاصر مع تطور وتقدم التقانة وتوظيفها في انتاج العمارة، اذا مثل التفاعل بينهما حافزا مهما للمعماريين نحو تقديم صيغ جديدة للتفاعل مع البيئة المحيطة وما تطرحه منمحددات في عملية التصميم العماري. في ضوء ذلك، ي | The development of the concept of sustainability in the Contemporary Architectural design is related to the progress of technology employed in the production ofarchitecture ,the interaction between the two concepts is an important incentive for architects to provide new forms of interaction with the surrounding environment and itsdeterminants in the Architectural design process. In View of this, The research sheds the light on two fundamental concepts which took place in the last few decades in both Architectural Theory and Design : "Digital Architecture" with it's impact on Current Design approaches, and "Sustainability" with its role in formulating approaches of sustainable design, which the an exploration of the nature of their relationship and its impact on achieving "sustainable identity" is the pivotal core of this research. With Digitisation and new technological challenges resulting from rapid acceleration in the evolution of digital design and software and what provides of potentials in design and construction, thedigital architecture synchronized with the requirement of sustainability produces active and influential concepts, important changes in the Architectural mindset towards restructuring both process design and production methods in contemporary architecture, offers new insights into the generation format digital and Architectural resulting ' strategies for sustainable design.By examining the foundations associated with the concept of sustainability and sustainable architecture in the digital age, to determine the general problem in the "absence of a clear conceptual framework of the concept of sustainable architecture in the light of the impact of digitalization age. " And identified the specific problem on "the need to provide clear conception about employing digital architecture as as a method of design for achieving sustainable architecture". Resulting in the crystallization problem associated with : "the absence of clear framework of employing digital design appraoches in identify mechanisms for achieving Sustainability in Digital Architecture.Accordingly,the research assumes that "sustainable identity Association employ digitization in sustainable Architectural design process through the activation of intellectual and formal elements of digital architecture for digital design and select stratigiath. In the light of the problem and its premise might specify the general objective : building a comprehensive conceptual framework for the concept of sustainability in digital architecture and mechanisms of their achievement, which includes specific targets : diagnosticelements of sustainability in the light of digitization, then clarify the essence of digital architecture and its intellectual and formal elements, Identifying In order to achieve the objectives of the research and testing hypotheses, built structure, which comprises five chapters, ending with conclusions and future recommendations.

سياسات الاسكان الوطنية في العراق : دراسة مقارنة National Housing Policies In Iraq : A Comparative Study

اسم المؤلف: هدى احمد جعفر
اسم المشرف: بهجت رشاد شاهين
الموضوع العام: الهندسة المعمارية
السنة: 2015
الموضوع الدقيق: هندسة العمارة
الدرجة: دكتوراه
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: الاسكان احد مرتكزات السياسة التنموية لاي بلد، ويمثل راس المال الثابت في اقتصاده. وبسبب العلاقة المتداخلة للاسكان كقطاع تنموي وخدمي في ان واحد،تظهر اهمية تنفيذ السياسات الاسكانية الوطنية الكفيلة بتفعيله على نحو يمكنه من التوصل الى تلبية الحاجة السكنية | Housing is one of the pillars of Development Policy for any country, and represents fixed capital in the economy.Because of the interrelationship of Housing as a development and a service sector at the same time, the importance of the implementation of national housing policies is demonstrated in a way that enabled to meet housing need within a specified period of time on one hand, and ensure the sustainability of the housing sector activity and productivity and its contribution to the economy and national development on the other.Chapter I introduced a number of related Housing studies(Planning,Housing,Economical,Social and ‏‏Legal), which revealed a knowledge problem : there is an interference related to housing concepts (housing and non - housing) and the absence of some of them, which led to lack of clarity of the appropriate characteristics of the environment for the implementation of National Housing Policies.These studies filtered a research problem : the lack of concepts clarity that allow the implementation of National Housing Policy, and its relationship with the social, economic , political and Housing contexts of the country.As the search looks at the National Housing Policies as an integrated system based on three foundations : Housing, Economic and Social, it developed a hypothesis that : the implementation of the National Housing Policies is based primarily on non - Housing rather than Housing concepts.The importance of research lies in that it presented a vision of Housing concepts (such as Housing Standards, Housing Patterns, Housing Tenure, Methods of Housing Provision) and other non - housing (the role of the state in the economy, and the development of the tripartite relationship of individuals - - society and the State), that underlies the implementation of National Housing Policies, and reflects the whole social, economic, and political contexts ,and allows the implementation of these policies.Chapter II focused on a number of Housing concepts (Housing Standards, Standard Policies, Housing Patterns and drawing Housing Indicators and elements that affects the selection of the dwelling. It distinguished between the Quantitative and Qualitative Deficit concepts, and their relationship to the concept of Affordability and Affordable Housing, and looks at the concepts of income, consumption, house price, Housing Stock and Housing Tenure from angles with deeper intellectual and philosophical dimensions, under a number of economic and social variables. Housing Provision Methods analysis (Supply and Empowerment) reveals unforeseen overlapping and strong relationships that affect the implementation of the National Housing Policy.Chapter III introduces economic concepts, where Housing is governed by the nature of the state role in the economy, at the level of intervention and coordination, the importance of the state institutions power compared by its functions.In a comparative context, the role of the state in the Islamic Economy, its involvement and its relationship with the individuals economic freedom are parallel, complementary and restricting. It appears that this intervention, as it has a legitimate back support, and other philosophical - political one, it explores lost dimensions of the state. On the other hand, the diversity of economies (Economies in transition, Token, and Market Economies), is reflected on the characteristics of the Housing Market in the Market Economy Policy. These characteristics are evident in comparison between the role of the state in a Centralized Economy and the Market Economy. It is no secret that the Development and its forms (political, economic, social and cultural), its concept in the thought of Islam, the way it is managed, and even the Myth of Development (as an opposite concept) have an obvious effect, along with the concepts of trust ,well - being and prosperity, and the role of Islamic State in the well - being.Accordingly, Economic Policies in Iraq could be understood ,with their former , current, and future approaches, and the National Development Plan in Iraq.Chapter IV deals with Social Concepts, that are almost the same in most societies (individual, family, society, principles, values and ethics), but the characteristics and relationships between these concepts vary from one community to another, and one environment to another. Research, as a general framework, deals with the concept of Sociology of Housing, as affected by the Transitional Stages, their relationship to Revolutions and their impact on society. The concept of Social - wise Capital, the tripartite relationship individuals - society - the state, the relationship of individuals with the state, Care Ethics, Trust and Social Mobility, together with the traditional social concepts such as standard of living , family size, on one hand, and is unforeseen, linked to the planning and implementation of Housing Policies.Chapter V deals, in a brief and intensively, Housing Policies Structure in general. And it presents some concepts that have been associated with these policies. In acomparative context, it deals with Housing Policy in Malaysia, the United Kingdom, and the Hashemite Kingdom of Jordan.Chapter VI, the research analyzes a number of studies and policies that are seen as key stations in the legacy of Housing Planning in Iraq, and compares National Housing Initiative in 2013, and the National Housing Policy 2010 - 2016, to reach a number of general and detailed conclusions and recommendations.

الحضرية الجديدة واستدامة المدن المعاصرة New Urbanism And Sustainability of Contemporary Cities

اسم المؤلف: اشواق فاضل مخيبر
اسم المشرف: انعام امين البزاز
الموضوع العام: الهندسة المعمارية
السنة: 2015
الموضوع الدقيق: هندسة العمارة
الدرجة: دكتوراه
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: يركزالمحور العام للبحث على مفهوم الحضرية الجديدة Urbanism) New (، ودورها في تحقيق الاستدامة في المدن المعاصرة. وتبرز اهمية المحورالعام في بناء قاعدة معلوماتية عن مفهوم الحضرية الجديدة وهو احد المواضيعالمهمة التي برزت في الاونة الاخيرة في العالم. فيما تب | The general idea of research focuses on concept of ( New Urbanism ) and its role for achieving sustainability in the Contemporary cities. Importance of research in building information base on ( New Urbanism ) is one of important subjects that appeared lately in the world wile the special idea importance is focused on building information base for many of name concerning with ( New Urbanism) concept and application mechanisms. The theoretical dissertations resulted reason behind this , lack to knowledge theory with accuracy and generalization in determining ( New Urbanism) concept and its applications in the urban design. And promoting this knowledge problem of research determined as the following : ( Absence enough scientific theory on appearance modern knowledge cap represented by determining (New Urbanism) and its role in achieving sustainability in the contemporary cities.Supposition of research : achieving sustainability in contemporary cities done according to the New Urbanism standards and scales under this.aims of research determined : 1.Disclosure about the importance of the new urbanism role in achieving sustainability of contemporary cities 2. Reached the foundations Development in accordance with the principles of the new urbanism and standards and Sustainability of cities standards and make it a strategy to create urban sustainability and application indicators resulted from theoretical framework on case studies include group projects, modern cities , Different, local, and Arab,. Plan of research : research mechanism of analysis number of previous studies for concluding terms of the theoretical framework and based on the lately analyzed study steps for establishment general vision for New Urbanism concept and concluding their dimensions bases and effect on achieving urban sustainability in contemporary cities because covering the constructing aspect of Sustainable Cities standards then application these standards on projects of local, Arab ,and international cities. The first chapter divided into two axes ,first axes determines New Urbanism movement ,the second axis deal with studies, according to the sequence of time which provided support and to prove its existence knowledge gap.The second chapter includes concept , foundation bases and properties of contemporary cities characterized by design and form of city, third chapter focused on Sustainable Cities and also divided into two axes.First axis is sustainability determines and sustainable building while ,second axis included urban sustainability determines urban design sustainable in the environment and place contemporary cities types of sustainable cities for concluding qualified type of contemporary cities and soling their problems and working on minimizing their challenges, fourth chapter includes Sustainable Cities standards and( LEED) standards for development city then reaching to final standards of sustainable cities and limiting terms of final theoretical framework terms that covering New Urbanism its constructing aspect. fifth chapter included two axes, first axis includes the theoretical framework for indicators of new urbanism movement , proposed mechanisms for solving problems and indicators the compact and its role in the urban sustainability reaching to the final theoretical framework while ,the second axis includes application theoretical framework terms on three projects in Iraq ,Dubai and Canada ,the sixth chapter concerned with results of show analysis of questionnaire ,the seventh chapter focused on final results in tow axes, the first on axis focused on results of theoretical aspect, the second one focused on the results concluded from the practical study and at last final recommendations reviewed with proposing number of future researches and limited the useful direction from research.

تطوير استراتيجية لادارة الشركات الانشائية العامة باتجاه هيكلتها (الشركة العامة للتصميم والانشاء الصناعي) كحالة دراسية Developing A Strategy For The Management of Government Construction Companies Towards Its Restructuring : State Company For Industry Design &Construction As A Case Study

اسم المؤلف: ماهر حماد جوهان الشمري
اسم المشرف: صدقي اسماعيل رزوقي
الموضوع العام: الهندسة المدنية
السنة: 2013
الدرجة: دكتوراه
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تمثل شركات القطاع العام جزءا كبيرا من القطاع الحكومي وتلعب دور اساسيا في نمو اقتصاد البلد، الا ان هذه الشركات تعاني كمثيلاتها في دول العالم الكثير من المشاكل التي تؤثر على عملها وبقائها واستمراريتها، في غمار التحولات العالمية لاقتصاديات السوق الحرة والع | State - owned companies represent a large part of the Iraqi public sector, and play a key role in the growth process of the country and a pillar of its economy.However, these companies like others in countries all over of the world suffer from a lot of t

ادارة التوريد المستدام للمواد في المشاريع الانشائية في العراق - شركة المنصور للمقاولات حالة دراسية Management of Sustainable Procurement of Materials For Construction Projects In Iraq, Case Study : Al - Mansour Company For Contracting

اسم المؤلف: افراح محمد حسن كشكول
اسم المشرف: Sawsan Rasheed Mohammed
الموضوع العام: الهندسة المدنية
السنة: 2014
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: ان التطور العمراني المتزايد ومحدودية موارد الارض يتطلب ايجاد طرقا بديلة للانشاء ليكون انشاءا مستداما حفاظا على الموارد والبيئة من التلوث وتقليل استهلاك الطاقة غير المستدامة التي تتسبب في تلوث البيئة واستبدالها بالطاقة المستدامة.تناول هذا البحث مشكلة تور | The increasing constructional development, ensure alternative sustainable sin addition to limited resources demands to obtain alternative solutions that preserve resources, environment and energy.This research deals with sustainable procurement of materi

استجابة الروافد الخراسانية المسبقة الجهد ذات النهايات المستدقة للاحمال الساكنة والصدمية Response of Dapped - End Prestressed Concrete Girders To Static And Impact Loads

اسم المؤلف: شذى ضياء محمد الخزرجي
اسم المشرف: Thamir K. Mahmoud
الموضوع العام: الهندسة المدنية
السنة: 2014
الموضوع الدقيق: الهندسة الانشائية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: ان الهدف الرئيس لهذا البحث هو دراسة سلوك العتبات الخرسانية المسلحة مسبقة الجهد ذات النهايات المستدقة لتاثير الاحمال الساكنة والصدمية, عمليا ونظريا. اشتمل المحور العملي فحص سبعة عشر نموذجا تم صبها باستخدام خرسانة ذاتية الرص بابعاد ) 09.4 م طول فضاء, 4904 م | The objective of this research is to study the behavior of dapped - ends pre - stressed reinforced concrete girders under static and impact loads, experimentally and theoretically. The experimental program included seventeen simply supported self - compac

المعالجة البايولوجية وازالة الملوحة للمياه المصاحبة مقترنة بتوليد الطاقة الكهربائية باستخدام خلية الوقود الاحيائية التناضحية Produced Water Biotreatment And Desalination Coupled With Electricity Generation Using A Micriobial Osmotic Fuel Cell (MOFC)

اسم المؤلف: محمد عبد الخالق ابراهيم الراوي
اسم المشرف: Zainb Zaid Ismail
الموضوع العام: الهندسة المدنية
السنة: 2014
الموضوع الدقيق: الهندسة البيئية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: ان مهمة معالجة مياه المخلفات قد تحولت من ازالة الملوثات الى مهمة مستدامة تستهلك طاقة اقل وذات كفاءة عالية لاسترجاع مياه المخلفات. من ناحية اخرى، فان ازدياد الطلب العالمي لمياه نقية وبكلفة انتاجية واطئة قاد الى نشوء تقنيات تستفيد من انتاج الطاقة ومعالجة م | The mission of wastewater treatment has transformed from simple contaminant removal to a more sustainable task with a goal of less energy consumption and more water recovery. On the other hand, increasing the global demand for clean and cost - effective e

صلاحية التشغيل والحمل الاقصى للبلاطات الخراسانية ذات الاتجاه الواحد المسبقة الشد ذات الفراغات الكروية الداخلية Serviceability And Load Capacity of one Way Prestressed Concrete Slabs With Internal Spherical Voids

اسم المؤلف: حسين حمودي ياسين
اسم المشرف: Nazar K. Oukaili
الموضوع العام: الهندسة المدنية
السنة: 2014
الموضوع الدقيق: الهندسة الانشائية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: اجريت عدة محاولات لتقليل اوزان البلاطات الخرسانية دون التاثير على مقاومتها للانثاء. ليست كل الخرسانة الداخلية يمكن ان تستبدل بسبب اهمية الركام في مقاومة القص ووجود الخرسانة في منطقة الانضغاط مهم في تكوين كتلة الضغط ووجودها في منطقة الشد اساسي في تماسكها م | Various attempts were made in the past to reduce the weight of concrete slabs, without reducing their flexural strength. Not all the internal concrete can be replaced though, since aggregate interlock of the concrete is important for shear resistance, con

الجريان من انابيب السيراميك المدفونة شاقوليا في التربة Flow From Buried Vertical Ceramic Pipes Through Soils

اسم المؤلف: فائز حسين المرعب
اسم المشرف: صفاء نوري حمد رياض زهير الزبيدي
الموضوع العام: الهندسة المدنية
السنة: 2014
الموضوع الدقيق: هندسة الموارد المائية
الدرجة: دكتوراه
الجامعة: جامعة بغداد
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: Improving agricultural water - use efficiency is vitally important in many parts of the world that have limited water resources. As large volumes of water are wasted by surface runoff, wind drift, or by deep percolation when applying surface, sprinkle, or

Nonlinear Dynamic Response of Reinforced Concrete Buildings To Skew Seismic Excitation

اسم المؤلف: حيدر امير احمد البغدادي
اسم المشرف: THAMIR K. MAHMOUD
الموضوع العام: الهندسة المدنية
السنة: 2014
الموضوع الدقيق: الهندسة الانشائية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: In order to found a dynamic testing facility at University of Baghdad, Civil Engineering Department, a uniaxial shake table with an ability of a rotating platform (2 - DOF; axial and rotational degrees of freedom) has been designed, manufactured and insta

موقع مخرج وتشغيل الجزء الغربي من هور الحمار Location of Outlet And Operation of The West Part of Al Hammar Marsh

اسم المؤلف: جمال صاحب الحمداني
اسم المشرف: Riyadh Z. Al Zubaidy
الموضوع العام: الهندسة المدنية
السنة: 2014
الموضوع الدقيق: هندسة الموارد المائية
الدرجة: دكتوراه
الجامعة: جامعة بغداد
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تتم تغذية هور الحمار من مياه المصب العام ذات التراكيز الملحية العالية عن طريق قناة الخميسية لمعالجة النقص الحاصل في تغذية الهور وللحفاظ عليه من الجفاف مرة اخرى ومع عدم وجود مخرج لمياه الهور فقد ادى ذلك الى تجمع الاملاح بتراكيز عالية داخل الهور. عليه اصبح | The brackish water of the Main Outfall Darian, MOD, has been supplied to the west part of Al Hammar Marsh to overcome the problem of water supply shortage and prevent it from dry again. Salts started to accumulate with high concentration within the marsh

الاستجابة العابرة والمنتظمة لمنظومة الاساس - التربة تحت تاثير احمال الاهتزاز Transient And Steady State Response Analysis of Soil Foundation System Acted Upon By Vibration

اسم المؤلف: عباس فاضل ابراهيم العامري
اسم المشرف: Mosa J. Al Mosawe Mohammed Y. Fattah
الموضوع العام: الهندسة المدنية
السنة: 2014
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: في ھذا البحث، تم عمل دراسة عملية وعددية لاستجابة اسس المكائن المعرضة للاھتزازات والمستندة على تربة رملية جافة ومشبعة تماما بالماء. تم تصنيع انموذج مختبري لغرض اجراء الدراسة العملية لتسليط الاحمال الحركية ذات النمط العمودي المتناسق الاھتزاز، وبعدد دو | In this study, the response and behavior of machine foundations resting on dry and saturated sand was investigated experimentally and numerically. In order to investigate the response of soil and footing to steady state dynamic loading, a physical model w

استجابة الروافد الخراسانية المسلحة المسبقة الصب والموصولة الى تاثير الحمل الستاتيكي والصدمي Response of Reinforced Concrete Precast Spliced Girders To Static And Impact Loads

اسم المؤلف: ميس فؤاد ابراهيم البياتي
اسم المشرف: ثامر خضير محمود
الموضوع العام: الهندسة المدنية
السنة: 2015
الموضوع الدقيق: الهندسة الانشائية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: ھذا البحث يقدم دراسة عن استجابة الروافد الخرسانية المسلحة الموصولة وغير الموصولة للاحمال الستاتيكية والصدمية حيث كانت التوصيلات باست عمال الحديد المعكوف وبواسطة التقوية post - tensioning) بصفائح الحديد اضافة الى استعمال قوى الشد ا للاحق ) لتعزيز مقاومة ال | In this research reinforced concrete spliced girders were tested under static or impact loads. The splices are of hooked dowels type cast in place joints, with or without strengthening steel plates. In addition post - tensioning had been used for some gir

معالجة المياه الجوفيه المحضرة والملوثة بالرصاص والفينول باستخدام حاجز نفاذ فعال Treatment of Lead And Phenol - Contaminated Simulated Groundwater Using Permeable Reactive Barrier

اسم المؤلف: زياد طارق عبد علي
اسم المشرف: Ayad A.H. Faisal
الموضوع العام: الهندسة المدنية
السنة: 2014
الموضوع الدقيق: الهندسة البيئية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تهدف الدراسة الحالية الى معرفة امكانية استخدام الحماه كماده مازة عضوية اقتصادية, متوفرة وكفوءة كحاجز تفاعلي نفاذ والذي يعتبر احد التقنيات الواعدة المبتكرة في المعالجة الموقعية للمياه الجوفية لازالة الرصاص والفينول او كليهما من الطبقة الملوثة ذات الاعماق ا | The present study investigates the possibility of using granular dead biomass in the permeable reactive barrier (PRB) technology. This technology is one of the promising innovative in situ groundwater remediation methods used in this study for the removal

الامتزاز التنافسي للعناصر الثقيلة بواسطة الطحالب ومادة (Fe3O4) النانوية Competitive Adsorption of Heavy Metals onto Algae And (Fe3O4) Nanomaterial

اسم المؤلف: حسنين سعد عبد الزهرة الحارس
اسم المشرف: شهلاء اسماعيل ابراهيم
الموضوع العام: الهندسة المدنية
السنة: 2014
الموضوع الدقيق: الهندسة البيئية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: A competitive biosorption of Cu2+, Ni2+, Zn2+ and Cd2+ ions from a synthetic wastewater onto dead algal biomass and nanomaterial was studied.(Fe3O4) nanoparticles obtained from US Research Nanomaterials, Inc., Houston, TX 77084, (USA), was used as nanoso

ازالة ايونات عدد من المعادن السامة الثقيلة كهروكيميائية وتحت ظروف ديناميكية Removal Of Multi Toxic Metal Ions Electrochemically Under Dynamic Conditions

اسم المؤلف: سهى اكرم محمد
اسم المشرف: قاسم جبار سليمان سيسيليا خوشابا
الموضوع العام: الهندسة الكيمياوية
السنة: 2014
الموضوع الدقيق: الهندسة الكيمياوية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: Electrochemical process is supplying unquestionable amelioration to treat the wastewater pollution, which is a major issue and particularly if the pollutants concerned of multi heavy metal ions. Therefore, two different configurations of electrochemical cells rotating cylinder electrode, RCE and fixed bed flow - by porous electrode, FBPE, in which electrolyte flow is perpendicular to the current flow. They are used to study their effect on the removal of four heavy metal ions being examined, which are : copper Cu(II), cobalt Co(II), cadmium Cd(II), and lead Pb(II)). As single, double, triple, and quaternary ions that were mixed, at different applied currents (150, 180, 250, and 300 mA) by using RCE and (50, 90, 150, 180, and 250 mA) by using FBPE. In addition, different dynamic conditions are examined, which are represented as different rotation speeds in RCE (100, 150, 200, 250, and 300 rpm) and different flow rates in FBPE (100,200,300,400, and 500 l/h). At different deposition times with constant initial concentration of the four metals ions as 125 ppm, the samples have been taken. The supporting electrolyte that is used in all experiments is 0.5 M NaCl at pH 3.5. Where a porous highly conductive material for both electrodes design stainless steel 316 of 60 mesh no.(60 60 pore in inch2) is chosen, to ensure the removal of heavy metals be effective and also the recovery of the deposited metal can be removed without damage the electrodes.The effect of the variation in the initial concentrations on the deposition process has been investigated. The range of initial concentration is from 50 to 200 ppm for Cu(II), Co(II), and Pb(II) ions with different applied currents (120, 180, 250, and 300 mA) and rotation speeds (100, 150, and 200 rpm) at constant time of deposition. Box - Wilson, central composite design, is chosen to carry out investigation and thirty - six response equations are found.The metals deposited on the electrode were recovered, which can be tested by X ray diffraction to characterize the composition of the recovered powder.The scope of the research mainly revealed the followings : The experimental results of the removal rate of the four metal ions : individually and as co - deposition as : binary, ternary, and quaternary metal ions, and at different conditions are presented. Mass transfer coefficients are found, and correlated with applied current and electrolyte velocity, which being more by applied current to increase. The performances of the two configurations are deduced based on the figures of merit for an initial concentration of 125 ppm.as shown in the followed table, Table Abstract - 1 The Maximum values of figures of merit for the two configurations reactor Reactor Design RCE FBPE Heavy metal ions A Applied current 300mA Cu(II) Co(II) Cd(II) Pb(II) At applied current 250 mA Cu(II Co(II) Cd(II) Pb(II) Fraction conversion, % 99.94 80 77.7 99.5 100 98.9 95 100 Mean value of the Space time yield (Kg m - 3 s - 1) 58.6 36.7 35.6 47.6 34.5 25.2 20.3 32.5 Specific energy consumptions Es (KWh/Kg) 1.75 2.03 3.9 5.75 7.2 6.7 13.4 23.5 Normalized space velocity sn (s - 1) *10 - 5 44.8 18.1 17.3 27.9 6.19 1.6 1.1 3.3 Current efficiency % At 150 mA 55.6 38.7 19.4 15.1 At 50 mA30.7 19.32 8.45 8.7 Fraction conversion, % At rotation speed 300rpm 99.5 76 75.4 97.5 At flow rate 300l/h100 97.6 90.4 100 Mean value of the Space time yield (Kg m - 3 s - 1) 27.1 15.7 15 19.4 34.3 25 23.6 33.8 Normalized space velocitysn (s - 1) *10 - 5 36.7 At 300 rpm 38.7 At 100 rpm 19.4 At 100 rpm 15.1 At 100 rpm 5.3 At 400 l/h 1.5 At 300 l/h 1.4 At 300 l/h 4.4 At 300 l/h It is found that copper and lead ions have a catalyzed effect on the deposition of cobalt and cadmium, as they reduced the hydrogen evolution reaction especially at higher applied current and electrolyte velocity. Furthermore, the characteristics of the deposited metal that recovered from the RCE, were examined by X ray diffraction which show high purity metal and binary metal alloys with little amount of impurities as lead oxides where the presence of lead oxides had the effect on producing binary alloys. Copper metal exhibited strongly then secondly lead, which appeared in three different phases and the weekly existence, was for cobalt. Experimental results, analysis and correlations showed good performance of the cell on removal multi metal ions from simulated effluents. Although the FBPE configuration had the magnificent performance by comparing with RCE, RCE had acceptable performance also with comparison with previous workers.

السلوك التاكلي للحديد الكاربوني في نواتج المياه للصناعات النفطية المحتوية على غاز CO2 Corrosion Behavior of Carbon Steel In CO2 - Containing Oilfield Produced Water

اسم المؤلف: خالد حامد رشيد عبد الخالق
اسم المشرف: ابرائيل سركيس يارو
الموضوع العام: الهندسة الكيمياوية
السنة: 2014
الموضوع الدقيق: الهندسة الكيمياوية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: ان وجود غاز ثاني اوكسيد الكاربون ( (CO2في طبقة الماء المالح بشكل غاز مذاب تحت ضغوط عالية والمصاحبة للنفط الخام يكون حامض الكاربونيك. الحديد المطاوع يشغل المادة الاساسية في تركيب خطوط الانابيب الناقلة في الصناعة النفطية والغازية , بسبب رخص ثمنها , مقاومته | Carbon dioxide is present in water as a dissolved gas under the high pressures common in underground oil and gas reservoirs. In the dissolved state it forms carbonic acid. The primary material of construction for pipelines in the oil and gas industry is mild steel, because of its price, strength and availability. However, carbon steel corrodes in the presence of carbonic and organic acids such as acetic acid (HAc). It is therefore important to investigate the conditions in which HAc causes corrosion damage to mild steel. The extent of HAc/CO2 corrosion depends on many other variables such as : temperature, CO2 partial pressure, pH, flow regime, etc.The corrosion rates of API X65 mild steel alloy have been studied by three different techniques : i. Weight Loss Technique.ii. Potentiodynamic Polarization Technique.iii. Characterization of the Corroded Surface Techniques.i. Weight Loss Technique : A series of experiments were performed to study the effect of simulated brines solutions on the corrosion rate of mild steel with and without acetic acid. The corrosion rates of mild steel were found to be similar in simulated brines solutions and 3.5 wt % NaCl solutions. The corrosion experiments were planned to form a second - order mathematical expression using Full Factorial Experimental Design (FFED) : a - Four variables experiments (influence of temperature, solution pH, acetic acid (HAc) concentration and speed of rotation). b - Three variables experiments (influence of temperature, solution pH and speed of rotation).The results of this investigation are summarized as follows : The second - order polynomial regression analysis of the objective function (corrosion rate), using Full Factorial Experimental Design (FFED) via STATISTICA software, gave two mathematical expressions for four and three variables experiments. Arrhenius Equation and Transition State Equation were used to evaluate the activation parameters : Activation Energy (Ea), Enthalpy of Activation (?H*) and Entropy of Activation (?S*). The values of average Equilibrium Constants (K*) were also calculated at each value of average Gibbs Free Energy Change (?G), to determine the spontaneous of corrosion reaction. The corrosion rate of mild steel in presence and absence of acetic acid were increased with increasing of temperature, acetic acid (HAc) concentration and speed of rotation, but decreased with increasing of pH of solution. Multi - variable regression analysis of objective function (corrosion rate) in presence and absence of acetic acid in weight loss technique as a function of experimental variables (temperature, solution pH, acetic acid (HAc) concentration and speed of rotation), yielded two suggested mathematical expressions.ii. Potentiodynamic Polarization Technique : In this investigation a theoretical model Equation proposed by Korobove and Medvedeva Korobove and Medvedeva, [2000] was used to analyze the shape of polarization curves. The values of polarization resistance (Rp) were also obtained, these values were increased with decreasing of temperature and speed of rotation in absence and presence of the protective film formation. The polarization resistance values in absence of acetic acid are larger than the polarization resistance values in presence of acetic acid, due to the formation of the protective film.The values of mass transfer correction factor (?) were also obtained, these values will approach unity at low overpotential and it decreases as overpotential increases in presence and absence of the protective film formation. Generally, in absence of acetic acid, the values of (?) are adjacent to each other and almost unite value compare with presence of acetic acid at different temperatures and speeds of rotation due to the protective film formation as diffusion barrier is accelerated by measures that restrict the transport of reaction products from the surface.The limiting diffusion currents of hydrogen in CO2 saturated, 3.5 wt% NaCl solutions under turbulent conditions in presence and absence of the acetic acid has been correlated. iii. Characterization of the Corroded Surface Techniques : The effect of presence and absence of the acetic acid (HAc) on the CO2 corrosion of grade API X65 mild steel alloy was investigated at optimum conditions in weight loss technique (45.4 °C, pH 4.8, 2178.5 ppm HAc and 1296.6 rpm) and in absence of acetic acid (68.7 °C, pH 7.9 and 1425.8 rpm) by using analyses of protective film thickness, porosity, roughness, Vickers micro - hardness (VMH), scanning electron microscopy (SEM), computerized metallurgical optical microscopy technique (CMOMT) and X - ray diffraction (XRD). In presence of acetic acid, a porous layer (Fe3C cementite/FeCO3 siderite layer) was formed. In absence of acetic acid, a fairly dense layer ferrous carbonate (FeCO3 / siderite layer) was formed. In absence of acetic acid, the roughness and hardness of protective film were greater than that of film formation in presence of acetic acid.

انتاج ايثايل ثلاثي بينوتايل ايثر من ثلاثي بيوتايل الكحول وايثايل الكحول باستخدام البيتا زيولايت المصنع من قشور الرز العراقي بواسطة التقطير التفاعلي Production of Ethyl Tert - Butyl Ether From Tert - Butyl Alcohol And Ethyl Alcohol Catalyzed By ? - Zeolite Synthesis From Iraqi Rice Husk In Reactive Distillation

اسم المؤلف: مؤيد خليل ابراهيم
اسم المشرف: ودود طاهر محمد عمار صالح عباس
الموضوع العام: الهندسة الكيمياوية
السنة: 2014
الموضوع الدقيق: الهندسة الكيمياوية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تم انتاج مادة اثل ثلاثي بيوتايل ايثر من تفاعل ثلاثي البيوتانول والايثانول باستخدام تقنية التقطير التفاعلي وبوجود العامل المساعد بيتا زيولات المحضر محليا من قشور الارز العراقي كعامل مساعد.ثلاثة انواع من العامل المساعد تم تحضيرھا من قشور الرز العراقي باع | This work was conducted to study the production of ethyl tert - butyl ether from tert - butanol and ethanol by using reactive distillation technique in the presence of locally prepared ? - zeolite catalyst from Iraqi rice husk Three types of catalyst have been prepared from Iraqi rice husk as silica source and used in this work with which are ? - zeolite with three different Si/Al ratios (10,20 and 30) for comparing with commercial ? - zeolite which purchased from China to compare its characterization and activity in the production of ethyl tert - butyl ether from tert - butanol and ethanol.Kinetic of reaction of tert - butanol and ethanol to produce ethyl tert - butyl ether was studied separately by using batch reactor. The experiments were carried out under operating conditions of; temperature of (323,333 and 343k), four catalyst types and feed mole ratio ethanol/tert - butanol varied from (1.23 - 1.96) using excess ethanol, the rate equation at 323 k for ethyl tert - butyl ether was found as shown The Arrehnius equations of constants of reactions rate were found as shown : k1 = exp (22.769 - 9912.5 /T)? k2 =exp (37.952 - 11335 /T) kw = exp ( - 40.03 + 9644 /T) The main study includes the continuous packed reactive distillation column to produce ethyl tert - buty ether. The tert - butanol and ethanol reaction was carried out by continuous packed reactive distillation column using the three types of the prepared ? - zeolites and commercial ? - zeolite at atmospheric pressure, The operating variables studied the tert - butanol feed varied from (1 - 7) ml/min., recycle ratio varied from (1 - 7) and weight of catalyst used was varied from (10 - 40) g.The analysis of samples produced from reaction was carried out using gas chromatography GC showed that the tert - butanol conversion was 100% for all types of ? - zeolite with best yield 88% toward ethyl tert - butyl ether by using prepared ? - zeolite with Si/Al of 10, tert - butanol feed flow rate 3 ml/min., weight of catalyst 20g, recycle ratio 3. The result showed that the yield of ethyl tert - butyl ether was increasing from 64% to 88% when the operating conditions varied from lower to upper limit using prepared ? - zeolite with Si/Al of 10. Also, the results showed that, the prepared ? - zeolite with Si/Al of 10 gives better yield than commercial one.

تصنيع وتشخيص الزيولايت النانوي المتبلور نوع ZSM - 5 والزيولايت المركب نوع ZSM - 5 / MCM - 41 لانتاج الوقود الحيوي Synthesis And Characterization of Nanocrystalline ZSM - 5 And ZSM - 5 / MCM - 41 Composite Zeolite For Biodiesel Production

اسم المؤلف: اسراء عبد الجبار صالح النعمة
اسم المشرف: نجوى صابر مجيد
الموضوع العام: الهندسة الكيمياوية
السنة: 2015
الموضوع الدقيق: الهندسة الكيمياوية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: الزيولايت النانوي - المتبلور بنوعين تم تصنيعهما ووصف خصائصيهما، النوع الاول يحتوي على ويحتوي على ZSM - 5/MCM - والاخر من نوع المركب 41 ZSM - مسام مايكروية ويسمى 5 05 نانومتر(. - نوعين من المسام ,المايكروية )اقل من 2 نانو متر( ومسام متوسطة ) 2 اجريت عم | Nanocrystalline ZSM - 5 zeolite and micro - mesoporous ZSM - 5/MCM - 41 composite zeolite were synthesized by hydrothermal treatment - conventional method. For ZSM - 5 two compositions were under investigation with different silica to alumina ratio of 86 and 68. Study of principal variables affecting the characterisics of synthesized zeolites were investigated in both aspects concerning chemical and process variables. Micro - mesoporous ZSM - 5/MCM - 41 composite zeolite were synthesized using alkaline treatment method and two step crystallization.Loading of synthesized zeolites with transition metals copper, cobalt, and ceria were conducted by impregnation.All zeolites products were characterized by X - ray diffraction (XRD), Atomic force microscopy (AFM), Fourier Transform infrared (FTIR), Brunauer - Emmet - Teller (N2 adsorption - desorption isotherm), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), X - ray fluorescence (XRF), and Thermogravemetric analysis/differential scanning calorimetry (TGA/DSC).XRD - patterns for ZSM - 5 showed, at different temperature ranging from (150 - 180 oC) and time of crystallization from 48 - 96h, that ZSM - 5 phase is the only obtained in almost all samples and the peaks at angle 2?= 7 ? 9o and 2?= 22.5 - 24.4o are typical. XRD - patterns for ZSM - 5/MCM - 41 identified by the 3 peaks in 2? < 10o and still having the peaks of ZSM - 5.AFM reports for both zeolites, ZSM - 5 and ZSM - 5/MCM - 41 indicated that a nano - level size of about 50 nm has been got. FTIR results showed that for ZSM - 5, the peaks near bands 3400, 1080, 800, 550, 450 cm - 1 have been clearly obtained. For ZSM - 5/MCM - 41 showedthe shifting of band at 1100 cm - 1 accompanied with a decrease of intensity in bands near 440 - 450 cm - 1.BET surface area results for ZSM - 5 samples showed a value of 320 - 380 m2/g and pore volume of 0.2 cm3/g. BET surface area for ZSM - 5/MCM - 41 showed an average value of 612 m2/g and pore volume of 0.5421 cm3/g.TEM images revealed that the loading of transition metals of copper and cobalt on both types of zeolite catalysts are distributed well on the surface of zeolite and on nano - level size.Biodiesel production, using prepared catalysts were conducted by esterification and transesterification by oleic acid and sunflower oil respectively with ethanol and methanol.Batch heterogeneous esterification process gave medium conversion of 69%. Semi - batch heterogeneous esterification gave better conversion of about 85%. The effect of both catalysts (Cu - ZSM - 5 and Co - Cu - ZSM - 5/MCM - 41) were similar and gave increase in conversion between 11 - 13%.Transesterification heterogeneous batch process using base - catalyzed (Ce - Na - ZSM - 5) and acid catalyzed heterogeneous transesterification (HZSM - 5), using sunflower oil and methanol showed a yield of 26% and 33% respectively relative to oil.

معالجة واعادة استخدام المياه الناتجة من حقول نفط الاحدب العراقية Treatment And Reuse of Produced Water From Al - Ahdab Iraqi Oilfields

اسم المؤلف: حسين باسم عليوي
اسم المشرف: Basma A. Abdul Majeed
الموضوع العام: الهندسة الكيمياوية
السنة: 2014
الموضوع الدقيق: الهندسة الكيمياوية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: الهدف الاساسي من هذا البحث هو تطوير طريقة عملية لمعالجة المياه المنتجة من حقول النفط العراقية. في هذه الدراسة تم توظيف نظام متحد من ثلاث عمليات معالجة هي التخثير والامتزاز والتبادل الايوني لازالة وتقليل بعض الملوثات الرئيسية مثل العكورة والمحتوى الزيتي وم | The overall goal of this research was to develop a practical method of treating co - produced waters from oil - field sources. In this study, combined coagulation - adsorption - ion exchange treatment was employed for the removal of some main contaminants like turbidity, oil content, and total dissolved solids from produced water. These combination steps are not studied before. The wastewater used in this work was taken freshly form Al - Ahdab oilfields. The coagulants used in this study were aluminum sulfate (alum) as a primary coagulant and calcium hydroxide (lime) as a coagulant aid. The performance of these coagulants was investigated through jar test by comparing turbidity removal at different coagulant / coagulants aid ratio, coagulant dose, water pH, and sedimentation time. The best conditions for turbidity removal can be obtained at coagulant dosage of 80 mg/L at pH 6 and 120 min for sedimentation time. There was an improvement in the turbidity removal when 25% lime was used in conjunction with 75% alum. At these conditions, the turbidity reading was reduced from 92 to 2.1 NTU. In addition, an attempt was made to examine the relationship between turbidity (NTU) and total suspended solids (mg/L) on the same samples of produced water. This study presents an investigation on the technical feasibility of using organoclay for adsorption of oil content from produced water. The organoclay was prepared by combination of Iraqi bentonite with quaternary amine (tetraethylammonium chloride). Batch mode experiments were conducted to study the effects of amine/ bentonite ratio, organoclay quantity, pH, and contact time. The analysis results showed that the organoclay adsorbent was very effective in removing oil content from produced water and the best results obtained for the removal of oil content are 16 g/L of prepared organoclay having 35 g amine/ 100 g bentonite, pH 3, and 120 min for contact time. These results reduce the concentration of oil content from 532.1 to 2.7 mg/L. Equilibrium adsorption isotherms and kinetics were investigated. The adsorption isotherm data were fitted well to Temkin isotherm as highest coefficient of correlation (R2=0.996) and lowest value of standard deviation (Sd=2.385). The adsorption kinetic data were fitted very well the pseudo - second order kinetics model (R2=0.997 and Sd=1.644). The continuous experiments were carried out in a fixed - bed column. The results revealed that adsorption capacity increases with increasing bed depth and with decreasing flow rate. In this work, a continuous ion exchange study in fixed - bed columns was performed to reduce TDS concentration from produced water. The experiments were subjected to lab - scale ion exchangers, consisting of two types of commercial resins connected in series. The two types of resins used in this work were : strongly acidic cation exchanger of type Dowex 650C and strongly basic anion exchanger of type Dowex I. 550A. Comparison of Thomas, Yoon - Nelson, and Adams - Bohart models with experimental kinetics results was done, and model parameters were evaluated by linear regression analysis for TDS reduction in different bed depths and flow rates. The obtained experimental data were in good agreement with Thomas and Yoon - Nelson models (R2 reaches to 0.996). Reverse flow regeneration was carried out in a fixed - bed column for exhausted resin by washing with diluted acid and base solutions. The regenerated resin was reused in the same column. Approximately, 65% of the original sorption capacity was restored.

فعالية عامل مساعد محضر ومحفز بمعادن مختلفة لعملية ازالة الكبريت بالهدرجة لزيت الغاز العراقي Activity of A Prepared Catalyst Promoted By Different Metals For The Hydrodesulfurization of Iraqi Gas Oil

اسم المؤلف: طارق محمد نايف
اسم المشرف: Abdul Halim A.K. Mohammed Hussein K. Hussein
الموضوع العام: الهندسة الكيمياوية
السنة: 2014
الموضوع الدقيق: الهندسة الكيمياوية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: The present work deals with the improvement of Iraqi gas oil containing 1.402 wt. % sulfur by hydrotreating process using different prepared hydrodesulfurization catalysts (Ni - Mo/? - Al2O3, Co - Mo/? - Al2O3, Co - Ni - Mo/? - Al2O3, Ti - Ni - Mo/? - Al2O3 and Re - Ni - Mo/? - Al2O3). All catalysts were prepared under vacuum impregnation to ensure efficient precipitation of metals within the carrier ? - Al2O3. Physical adsorption by nitrogen was investigated, and used for determination of the surface area and pore size distribution of prepared catalysts.The results showed that modified catalysts Ti - Ni - Mo/? - Al2O3 and Re - Ni - Mo/? - Al2O3 have a high surface area 225.1 and 235.23 m2/g respectively, as compered with conventional prepared catalysts Ni - Mo/? - Al2O3 and Co - Mo/? - Al2O3 which their have surface area 178.5 and 191.4 m2/g respectively, and exhibits behavior of type four according to Brunauer, Emmett and Teller (BET) classification, and type H1 according to de Boer classification for hysteresis loop, so, it was concluded that the pores of these catalysts are cylindrical. The performances of all the synthesized catalysts for removal of sulfur and aromatic saturation gas oil were tested at different LHSV (1 to 4 h - 1), temperatures ( 275 to 350 °C), constant pressure 40 bar, and H2/HC ratio 500 ml/ml. The results showed that the sulfur and aromatic content were decresed at all operating conditions for all prepared catalysts. It was found that the sulfur removal from gas oil increases with temperature and decreasing with the space velocity, and the temperature has higher effect on the process of sulfur removal than the space velocity. It was found also that Ni - Mo/? - Al2O3 catalyst is slightly better in sulfur removal (61.5 wt. % ) with than Co - Mo/? - Al2O3 (59.2 wt. %) at the same operation conditions (350 °C and LHSV 1 h - 1), and hydrodesulfurization over Ni - Mo/Al2O3 was improved remarkly by adding Ti and Re promoters. Maximam sulfur removal was 76.81 wt. % using Re - Ni - Mo/? - Al2O3 at temperature 350?C, LHSV 1 h - 1, while minumum aromatic content value is 15.44 wt. % for Ni - Mo/ ? - Al2O3. Calculations showed that the hydrodesulfurization rate expressions fitted with second order reaction kinetics model.The rate constant varied from 0.005 to 0.144 liter/kg.h and the values of activation energy varied from 50.0 to 93.59 kJ/mole for all prepared catalysts. Thiele modulus, for all prepared catalysts was calculated.The lower values of the Thiele modulus (> 0.4) gives strong evidence of negligible pore diffusion limitation.

تثبيط تاكل الحديد الكاربوني الواطئ في حامض الكبريتيك باستعمال كحول البولي فينيل ومستخلص نبات PIPER LONGUM Corrosion Inhibition of Low Carbon Steel In Sulfuric Acid By PVA And Piper Longum Extracts

اسم المؤلف: اياد بهاء الدين احمد
اسم المشرف: ماجد ابراهيم عبد الوهاب ابرائيل سركيس يارو
الموضوع العام: الهندسة الكيمياوية
السنة: 2014
الموضوع الدقيق: الهندسة الكيمياوية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: The inhibitive power of Polyvinyl Alcohol (PVA) and the synergistic effects added on the inhibition power of PVA by two types of Piper Longum (PL) Ethanol Extracts (PLEXT) were investigated toward the corrosion of carbon steel in (0.2N) H2SO4 solution in the temperature range (30 - 60?C) and PVA concentration range (150 - 2000 PPM).The corrosion rate measurements were carried out using the following two standard corrosion measurements techniques.1. Weight loss technique was applied on carbon steel plates to evaluate inhibition efficiency in presence and absence of these inhibitors.2. Electrochemical Techniques were used to validate and support inhibition efficiencies found in weight loss techniques.A detailed study of the experimental methods and results is reported for each test conducted.The weight loss results showed that PVA could serve as a corrosion inhibitor but its inhibition power was found to be low for the corrosion of carbon steel in the acidic media.It was shown that the inhibition efficiency for (PVA) decreased with increasing temperature at a given PVA concentration. On the other hand it was shown that at given temperature the inhibition efficiency of (PVA) was increased with increasing of PVA concentration until a PVA concentration of 2000 ppm PVA was reached then only a slight decrease in inhibition efficiency was observed when increasing PVA concentration further.The Maximum inhibition efficiency reached was about 71 % at 30?C & 2000 ppm (PVA) concentration, calculated by the weight loss techniques.In order to improve the inhibition efficiency of PVA, by adding 6 ml/l of ethanol extracts of piper longum (PL) to a liter of the acid solution in presence of concentrations of PVA 150,500,1000.1500, and 2000 ppm at temperatures (30,40,50, and 60?C) was investigated.Weight loss results showed a jump in inhibition efficiency (% IE) value of the modified inhibitor mixture compared with the presence of PVA alone at all (PVA) concentrations for temperature range considered in this investigation.This study demonstrated the extra inhibition power added by the (PL) fruit extracts to the organic polymer (PVA) used. Maximum inhibition efficiencies recorded were approximately 95% for Piper Longum Extract Number two (PLEXT2) at 30?C and 2000 ppm PVA.The kinetic and thermodynamic parameters regarding the adsorption process of inhibitors used was calculated.It was found that the changes corrosion rates correlates well with the Arrhenius equation in absence and presence of inhibitors.The Results showed that the adsorption of the polymer and the plant extract follows Langmuir adsorption isotherms and the adsorption of the inhibitor molecules on the metal surface is mainly physical, nevertheless the adsorption is believed to be slightly deviated from the Langmuir model at 30?C.Electrochemical analysis of the corrosion process of carbon steel in an electrochemical corrosion cell was investigated using 3 - Electrode corrosion cell coupled with a potentiostat interfaced with a computer which assisted polarization data interception and interpretation.Polarization technique was used to obtain polarization data which was recorded for carbon steel in 0.2N H2SO4 solutions in presence and absence of the inhibitors investigated. Electrochemical runs were done in the (PVA) concentrations of 150, 1000, and 2000 PPM and a temperatures of 30, 40, 50, and 60?C.Tafel slopes, Corrosion currents, and corrosion rates were calculated from polarization curves by Tafel extrapolation method. Results showed corrosion rate trends similar to findings by the weight loss method. It was indicated also that the corrosion of carbon steel in 0.2N H2SO4 is highly activity controlled.Results revealed that the inhibition action is occurring at both anodic and cathodic sites on the metal surface so that both corrosion reactions were affected, so that the composite inhibitor could be considered as mixed - type inhibitor.Electrochemical results confirmed that (PLEXT2) was more efficient as inhibition improvement additive to (PVA) than (PLEXT1) at all experimental conditions range encountered in this study.The highest inhibition efficiency recorded using Tafel polarization method was 83% obtained at 30?C and 2000 ppm of PVA with 6 ml/l PLEXT2.

ازالة الكادميوم من المياه الملوثة بالترسيب الكهروكيمياوي باستخدام حزمة من الانابيب الفولاذية متحدة المركز Removal of Cadmium From Wastewater By Electro - Deposition On Stainless Steel Concentric Tubes Bundle

اسم المؤلف: انس بديوي سلمان
اسم المشرف: عباس حميد سليمون بسمة عباس عبد المجيد
الموضوع العام: الهندسة الكيمياوية
الموضوع الدقيق: الهندسة الكيمياوية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تم دراسة انتقال الكتلة الخاص بايونات الكادميوم الثنائية الى سطح اسطوانة دوراة مصنوعة من مادة الفولاذ المقاوم للتاكل (كقطب كاثود) بواسطة قياس التيار المحدد لتفاعل اختزال ايونات الكادميوم الكاثودي في محلول كبريتات الصوديوم بتركيز مولار باستخدام خلية ثلاثية | 1 - Mass transfer of Cd+2 ions to a smooth stainless steel rotating cylinder electrode was studied by measuring the limiting current for the cathodic reduction of Cd+2 in 0.5 M sodium sulphate supporting electrolyte by three electrodes cell with stainless steel rotating cylinder electrode working in hydrodynamic voltammetry mode. The studied parameters were electrolyte pH (4, 5, 6 and 7), initial Cd+2 concentrations (50, 100, 200, 300 and 400 ppm) and rotation rates (100, 150, 200 and 250 rpm). Cadmium ions' reduction potential for mass transfer control conditions was found to be - 0.13 V. Diffusion coefficient was determined and correlated with the bulk concentration of Cd+2 in sodium sulphate solution. The increase in pH was found to enhance the mass transfer coefficient and this effect diminishes nearly at pH=7, and the experimental data were well fitted by an empirical dimensionless correlation among the Sherwood number, Reynolds number and Schmidt number. The obtained correlation was : Sh=0.047 ?Re?^0.769 ?Sc?^0.356 For (8015.519 < Re < 20587.07) Reduction potential obtained via the voltammograms constructed by the rotating cylinder cell was applied for the two pilot scale units in order to keep the process under mass transfer control conditions. Parameters studied in these units are : initial cadmium concentration, pH, and electrolyte flow rate. The first pilot scale unit was an electrochemical reactor with smooth stainless steel concentric tubes, and the second one was an electrochemical reactor with stainless steel mesh concentric cylinders.2 - For the stainless steel smooth concentric tubes cathode, mass transfer coefficient was calculated and correlated with initial concentration.Effect of pH on mass transfer coefficient was studied and correlated, and it was found that the effect of pH was found to be completely negligible at pH=7.On the other hand, effect of flow rate on mass transfer coefficient was studied and correlated. Performance of the reactor was analyzed by introducing figures of merit for fractional conversion, specific energy consumption, space time yield and normalizes space velocity. The experimental data were correlated in a dimensionless expression as flows : Sh=0.804?Re?^0.632 ?Sc?^(1/3) For 254 < Re < 1018.3 - For the stainless steel mesh concentric cylinders was adjusted to work under mass transfer control conditions by applying the reduction potential obtained in hydrodynamic voltammetry experiments.Effect of initial cadmium concentration, pH and solution flow rate was studied and analyzed. Mass transfer coefficient was correlated with these studied parameters.Similar to smooth cathode, the mesh cathode showed a negligible response to pH at pH=7.Noticeable enhancement in mass transfer coefficient was investigated by the action of flow rate, and the mass transfer coefficient was correlated with the solution flow rate.The mesh cathode showed a higher conversion than that adopted by the smooth cathode, and showed lower cumulative current efficiency than that of smooth cathode.Mesh cathode showed specific energy consumption, space time yield and normalized space velocity higher than that for the smooth cathode.Experimental data for the mesh reactor were correlated in a dimensionless relation as follows : Sh=1.898?Re?^0.514 ?Sc?^(1/3) For 235 < Re < 943 Cadmium ions reduction reaction was found to follow a first order reaction with respect to Cd+2 concentration, and reaction rate constant was predicted under different operating conditions.

تاثير البكتريا المذيبة للفوسفات وحامض الهيومك في اتزان الفسفور وجاهزية المغذيات وحاصل الذرة الصفراء(Zea mays L.) Effect of Phosphate Solubilizing Bacteria And Humic Acid on Phosphorus Balance, Nutrient Availability And Yield of Maize

اسم المؤلف: ايمان قاسم محمد البحراني
اسم المشرف: حمد محمد صالح هادي محمد كريم
الموضوع العام: علوم الزراعة
السنة: 2015
الموضوع الدقيق: التربة والمياه - الخصوبة
الدرجة: دكتوراه
الجامعة: جامعة بغداد
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: نفذت تجربتان منفصلتان لدراسة تاثير اضافة السماد الفوسفاتي والحيوي وحامض الهيومك والتداخل بينهم في جاهزية الفسفورو النتروجين والبوتاسيوم والحديد والزنك والمنغنيز في التربة والكميات الممتصة في النبات وعلاقة ذلك في نمو وحاصل الذرة الصفراء. التجربة الاولى ( | Two experiments were conducted to study the effect of PSB,. humic acid and their interaction on Soil P availability, (N, K) and micronutrient (Fe, Zn, Mn) in soil and their uptake, yield and some yield components of Maize (Zea mays L.).Pot experiment : T
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