Home
Deposit
Citation
FAQ
About
Contact Us
AR
Login
Field
All fields
العنوان
اسم المؤلف
الموضوع
Search words
Search
Show:
25
50
75
100
Results
Active filters:
Clear all
Search results:
25
out of
109
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
Author name:
انس بديوي سلمان
Supervisor name:
عباس حميد سليمون | بسمة عباس عبد المجيد
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Doctorate
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
Abstract:
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.
👁 View
More
التكسير الحراري والحفازي لمخلفات البولي اثيلين البلاستيكية في مفاعل شبه دفعوي == Thermal And Catalytic Pyrolysis Of Polyethylene Plastic Waste In Semi Batch Reactor
Author name:
فهمي ابو القاسم محمد
Supervisor name:
عمار صالح عباس
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
استخلاص خام فوسفات عكاشات العراقية بالحوامض العضوية واللاعضوية == Leaching Of Iraqi Akashat Phosphate Ore By Organic And Nonorganic Acids
Author name:
محمد يعقوب عيسى
Supervisor name:
سيسيليا خوشابا هاويل | بسمة عباس عبد المجيد
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Doctorate
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
اختزال مركبات الكبريت من المقاطع النفطية باستخدام تقنية الاكسدة والامتزاز == Reduction Of Sulfur Compounds From Petroleum Fractions Using Oxidation Adsorption Technique
Author name:
بان جابر ابراهيم
Supervisor name:
NADA SADOON AHMEDZEKI
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
تنبؤ الخصائص الثرموديناميكية للنظام الثلاثي من بيانات المركب النقي == Prediction Of Thermodynamic Properties Of Ternary System From Pure Component Data
Author name:
مريم خليل عودة
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
ازالة الالوان من المياه الصناعية المستخلصه من الصناعات النسيجيه باستخدام الكربون المنشط والالومينا المنشطة == Removal Of Dyes From Wastewater Of Textile Industries Using Activated Carbon And Activated Alumina
Author name:
عباس حسون بجاية المسعودي
Supervisor name:
Wadood Taher Mohammed
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
دراسة كفاءة المبادل الحراري المضغوط ذو الصف الواحد من الانابيب والحاوي على زعانف مستطيلة == Performance Of Plate - Fin Tube Compact Heat Exchanger
Author name:
وسام جليل خضير الزبيدي
Supervisor name:
ماجد ابراهيم عبد الوهاب
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
تحضير السيليكا الضبابية من رباعي كلوريد السيليكون منتج محليا == Fumed Silica Preparation From Locally Produced Silicon Tetrachloride
Author name:
محمد حمزة مساعد
Supervisor name:
امل نجم الدين المميز | مؤيد كاصد جلهوم
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
اختزال اكاسيد النتروجين باستخدام عامل مساعد مصنع محليا == Locally Prepared Catalyst For Reduction Of NOX By NH3
Author name:
ابتهاج فيصل عبد الرحيم
Supervisor name:
سيسيليا خوشابا هاويل | ناهض وديع قصير
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
حساب المعامل الحجمي لانتقال المادة في طبقة امتزاز ثابتة == Determination Of Volumetric Mass Transfer Coefficient In Fixed Bed Adsorption
Author name:
فرح ياسين القيسي
Supervisor name:
عادل احمد عوض
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
تاكل حديد التسليح في الكونكريت المسلح في بعض الترب الجبسية العراقية == Mild Steel Corrosion Of Reinforced Concrete In Some Gypseous Iraqi Soils
Author name:
سلمى عرفان حسين
Supervisor name:
سعد احمد جعفر
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
تحليل منطقة الخلط في غرفة الاحتراق لمحركات الدفعالتظاغطي == Analysis Of The Mixing Zone In The Combustion Chamber Of Ramjet
Author name:
سعد علاء الدين فائق
Supervisor name:
عادل احمـد عـوض
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
ازالة التكلسات من داخل الاجزاء الداخلية للانابيب في اجهزة التبريد == Removal Of Scale Deposited On The Internal Surfaces Of Pipes In The Cooling Systems
Author name:
نجوى صابر مجيد
Supervisor name:
عباس حميد سليمون
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Doctorate
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
تجفيف المواد الصلبة ياستخدام الابراج المميعة == Drying Of Solid Materials By Fluidized Beds
Author name:
مها محي الحسيني
Supervisor name:
ماجد ابراهيم عبد الوهاب
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
تحضير مذيب لازالة البقع الدهنية والاوساخ من القماش الخام دون التاثير على متانته == Preparing A Solvent To Remove Oil Spots And Dirt From The Calico Cloth Without Effecting The Strength
Author name:
محمد فخري احمد
Supervisor name:
ودود طاهر محمد
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
فصل المواد الهيدروكاربونية باستخدام تقنية الغشاء النفاذي السائل == Separation Of Hydrocarbon By Emulsion Liquid Membrane Technique
Author name:
محمد دخيل سلمان
Supervisor name:
عادل احمد عوض
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
تحفيز التراب المتوفر محليا لقصر زيت زهرة الشمس == Activation Of Locally Clay For The Bleaching Of Sunflower Oil
Author name:
سنان سمير متي
Supervisor name:
عبد الحسين متعب الحلو
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
دراسة تاثير زيادة الرطوبة للالواح الموجبة بعد اللبخ على كفاءة البطارية الرصاصية السائلة == Studying The Effect Of Increasing Moisture Content After Pasting On The Properties Of The Positive Plate Of Lead - Acid Batteries
Author name:
مصعب كاظم رشيد
Supervisor name:
عبد الحسين الحلو
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
دراسة تاثير ضغط التشكيل و درجه حراره الحرق على عمليه تلبيد الدولومايت لغرض صناعه الحراريات == Studying The Effect Of Moulding Pressure And Firing Temperature On Sintering Dolomite For Production Of Refractories
Author name:
حيدر منذر حسين
Supervisor name:
مروان غايب مظهور | عبد الحسين الحلو
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
الاستقطاب الانـودي لسبـيكة الالمنـيوم AA 5052 المـؤنودة == Anodic Polarazation Of Anodized Aluminum Alloy 5052
Author name:
علاء مشجل علي الاسدي
Supervisor name:
ابرائيل سركيس يارو
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
زيادة نسبة الهيدروكاربونات العطرية في النافثا باستخدام مختلف العوامل المساعدة == Catalytic Aromatization Of Naphtha Using Different Catalysts
Author name:
حسين قاسم حسين
Supervisor name:
عبد الحليم عبد الكريم محمد
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Doctorate
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
انعكاس الطور بوجود انتقال المادة للسوائل المنتشرة == Phase Inversion With Mass Transfer In Liquid - Liquid Dispersion
Author name:
زينة ياسين داود
Supervisor name:
سيسيليا خوشابا
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
تطبيق عملية التنافذ المعالج في ابراج التبريد == Investigating Polyamide Membrane In Direct Osmosis Process In Cooling Towers
Author name:
حسن فرهود مكي
Supervisor name:
Majid I. Abdul Wahab | Hussain I. Saleh
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Doctorate
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
دراسة حركية تفاعل ازمرة الحفاز للهكسان الاعتيادي == Kinetic Study Of Catalytic Hexane Isomerization
Author name:
مها هادي الحسني
Supervisor name:
عبد الحليـــم عبد الكريـــم محمد
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
تقييم مثبط التاكل الانودي للحديد المغمور في محاليل قاعدية باستخدام تقنية الاستقطاب الكلفاني الساكن == Evaluation Of An Anodic Corrosion Inhibitor Of Steel Immersed In Alkaline Solutions Using Galvanostatic Technique
Author name:
هاني شاكر حسن
Supervisor name:
ابرائيل سركيس يارو
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Master
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
👁 View
More
1
2
3
4
5
