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تحديد الظروف الفضلى للتفكك الضوئي لصبغة الاليزارين الصفراء على سطح اوكسيد الزنك المعدل والمسند == Determination The Optimum Conditions For The Photo Degradation of Alizarine Yellow Dye On The Surface of Modified And Supported Zinc Oxide
Author name:
سوزان ضياء رؤوف
Supervisor name:
احمد كاظم عباس
General topic:
Chemistry
Specific topic:
Chemistry
Degree:
Master
University:
University of Al-Qadisiyah - College Of Science - Chemistry Department
Language:
Arabic
University location:
Qadisiyah
First pages:
25T1497 - p.pdf
Abstract:
تم في هذا البحث تحضير عدد من مركبات قواعد شف الحلقية غير المتجانسة وكما في الجدول ادناه : التركيب الرمز جرى تشخيص المركبات المحضرة باستخدام درجات الانصهار,الطرق الطيفية , FT - IR , H1 NMR , CHN Analysis ثم درست قابلية المركبات على تكوين معقدات ملونة ذائبة | The synthesis of heterocyclic schiff bases was achieved as shown in the table below : structure codeIn the first part of this work all the compounds were characterized by their M.p,IR,H1NMR and Elemental analysis CHN.In the second part ,the new compounds were examined by (spot test) for their metal complexes only compound D gave coloured compound with Cu2+ ions.A detailed study for this complex was carried for L/M ratio by mole ratio and continous variation method , calibration curve of Cu2+ ions were established depending on compound D.In the third part ,compounds A,B,C were loaded on poly urethane foam with 5% of the compounds and compound E with 10% to the foam so that chelating polymers P1,P2,P3,P5 were prepared respectively.Compound D was copolymerized with bis phenol A because its phenolic schiff base to produce polymer P4 with 10% of compound D.A complete analytical study for the prepared polymers regarding their loading capacity for different ions specially transition metal ions and heavy metals like Pb2+ and Cd2+ which are a major source of pollution.The study included two major factors i.e treatment time and pH and was conducted by batch study.Polymers P1,P2 and P3 showed same behavior towards the studied ions , on the other hand polymer P4 showed the highest loading capacity for all ions while polymer P5 showed the lowest this can be shown as : - Loading capacity P5< P1 , P2 , P3 < P4The highest loading capacity in all polymers was for Pb2+ ions , other ions were different in their order according to each polymer.A study for the regeneration of loaded polymer P5 (as an example) was conducted using (4M) HCL. The %recovery of Cr3+,Pb2+ and Co2+ was almost 90% or higher but Ni2+ was only 30% recovered.
