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Journal of Advances in Environmental Health Research، جلد ۴، شماره ۳، صفحات ۱۶۹-۱۷۵
عنوان فارسی
چکیده فارسی مقاله
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عنوان انگلیسی Fabrication of ultrathin graphene oxide-coated membrane with hydrophilic properties for arsenate removal from water
چکیده انگلیسی مقاله Terms and conditions of current drinking water quality standards, including reducing the maximum arsenic concentration from 50 μgl-1 to 10 μgl-1 and predicted stricter standards in future, reveals the necessity for development of new technologies. This study aimed to prepare and evaluate a new nanocomposite membrane using graphene oxide (GO) thin layer to remove arsenic (v) from water. To fabricate the membrane, initially GO was prepared using the modified Hummers' method and then to gain a narrow-dispersed GO dispersion, several times centrifugation and sonication were performed. Then resultant dispersed GO was coated on a microporous flat-sheet polyethersulfone support by coating/deposition and vacuum filtration process. Performance of the synthesized membrane was assessed using a dead end filtration system. The results showed that pure water flux decreased as the coated GO thickness increased. Among the three prepared membranes, the greatest flux was attributed to M1 membrane with the value of 398.5 lm-2h-1 and the minimum flux was for M3 with a value of 131.3 lm-2h-1 at 4 bar of pressure. Furthermore, by increasing the coated GO, rejection of arsenate ions increased significantly. With initial concentration of 1000 ± 20 μgl-1, percentage of arsenate rejection for M1, M2 and M3 membranes were 41.8%, 73.5% and 86.7%, respectively. Relatively high removal by this novel membrane can be due to the exceptional properties of GO nanostructure and the presence of hydrophilic functional groups. 
کلیدواژه‌های انگلیسی مقاله Membrane,Nanocomposite,Drinking water,Arsenate
نویسندگان مقاله رضا رضایی |
environmental health research center, kurdistan university of medical sciences, sanandaj, iran

سیمین ناصری |
center for water quality research cwqr , institute for environmental research ier , tehran university of medical sciences, tehran, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

امیرحسین محوی | amir hossein
department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

علی جعفری |
department of environmental health engineering, faculty of health and nutrition, lorestan university of medical sciences, khorramabad, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی لرستان (Lorestan university of medical sciences)

مهدی صفری |
environmental health research center, kurdistan university of medical sciences, sanandaj, iran

بهزاد شاهمرادی |
environmental health research center, kurdistan university of medical sciences, sanandaj, iran

محمود علی محمدی |
department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

محمد خزایی |
research center for environmental pollutants, qom university of medical sciences, qom, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی قم (Qom university of medical sciences)

محمد ماروسی |
department of public health, neyshabur university of medical sciences, neyshabur, iran

نشانی اینترنتی http://jaehr.muk.ac.ir/article_42220_0f2e8174bf4b509a37563a69697ffc16.pdf
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/326/article-326-331895.pdf
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زبان مقاله منتشر شده en
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