اپوكسي دار كردن جاذب هاي معمول صنعتي به منظور جفت كردن آنها با ساختار فنلي رنگدانه هاي آلي

Epoxidation of Industriar Usual Absorbents to Coupling themwith Phenol Structure of Organic Pigments

در اين پژوهش، ابتدا پليمري خاص با استفاده از مواد اوليه سيليكاژل ، 3- گلي سيدوكسي پروپيل تري متوكسي سيلان و نيز پيگمنت آلي تولوييدين قرمز ] 1- ((4- متيل – 2- نيتروفنيل) آزو) - 2- نفتول [ سنتز گرديد . در طي انجام اين واكنش ابتدا حلقه اپوكسيد با استفاده از عامل سيلان بر روي سيليكاژل به عنوان بستري جامد تثبيت شده ، سپس عامل فنلي تولوييدين قرمز به عنوان هسته دوست ، باعث باز شدن حلقه اپوكسيد گرديد. بدين ترتيب حلقه اپوكسيد با همكاري عامل فنلي مولكول تولوييدين قرمز باز شده تا دو تركيب آلي بر روي سطح سيليكاژل جفت شوند . تعيين كاربرد ويژه براي اين ماده هدف تكميلي اين پژوهش مي باشد . اين پليمر توانايي جذب سرب را دارد .در ادامه شرايط جذب ، واجذب سرب و بازيافت پليمر بررسي و بهينه گرديد .pH بهينه تعيين شد و نيز كارايي آن بر روي نمونه هاي واقعي آزمايش گرديد

Heavy metal ion removal from waste – waters has been the subject of extensively technological research and recovering process can often result in considerable cost saving. Such analytical procedure developments are widely encouraged because many metals such az mercury , cadmium , lead attain toxicity at distinct levels or can show either vital or toxic effects ina series of biological systems as a function of concentration . Therefore , increasing pressure from enviromental authorities forces the establishment of dis charge limits, which in turn , require an effective use of de contamination and puritication methods. The aim of this research was the synthesis of a polymer that easily and efficiently adsorbs / desorbs Pb ions for removing / recovering this ions from industrial. In this synthesis silicagel and3
glycidoxypropyltrimethoxysilane were coupled and SiGPMS synthesized and Toluidin red was coupled to it . This polymer was characterized with IR. Then using AA technique, the amount of absorbed Pb by polymer was studied in different pHs . The maximum adsorption of Pb was occurred at pH= 7. The optimum time for adsorption of Pb was found to be 4hours. The reliability and performance of the synthesized polymer was evaluated by using real samples. In conclusion the synthesized polymer has good capability for adsorption and removing of heavy metal ions espPbftomindustrial wastes