Thin film nanocomposite forward osmosis membrane prepared by graphene oxide embedded PSf substrate
محل انتشار: فصلنامه علوم و فناوری ذرات، دوره: 2، شماره: 2
سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 364
فایل این مقاله در 16 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JPST-2-2_006
تاریخ نمایه سازی: 26 فروردین 1397
چکیده مقاله:
One of the limiting factors in good performance of forward osmosis (FO) membranes is the internal concentration polarization (ICP). To reduce ICP, thin film nanocomposite forward osmosis (TFN-FO) membranes were fabricated by adding different amounts of graphene oxide (GO) nanoplates (0-1 wt. %) to polymer matrix of polysulfone (PSf) substrate. The prepared nanocomposite membranes exhibited both hydrophilicity and porosity higher than that of neat PSf counterpart. An optimum amount of 0.5 wt. % was obtained for GO addition into the membranes. The corresponding fabricated thin film nanocomposite (TFN) membrane (TFNG0.5) revealed a water permeability of 2.44 L/m2h bar which is 66% higher compared to an in-house made composite membrane. The FO performance of TFN was assessed by DI water as feed solution and 1 M NaCl as draw solution in ALDS orientation. The water flux of the synthesized FO membranes increased upon adding of GO nanoplates and reached to a maximum water flux of 37.74 (L/m2h) for TFNG0.5 membrane. This flux is about 3 times higher than TFC membranes without significant changes in their salt rejection. The higher water flux of the TFN membranes can be attributed to ICP decrease originating from reduction of structural parameter of the membranes.
کلیدواژه ها:
نویسندگان
Saharnaz Tajik
Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran
Omid Moini Jazani
Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran
Soheila Shokrollahzadeh
Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
Seyed Mahdi Latifi
Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran