کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4987952 | 1455287 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of thermoresponsive PVDF/SiO2-PNIPAM mixed matrix membrane for saline oil emulsion separation and its cleaning efficiency
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Thermoresponsive polyvinylidene fluoride/silica-poly (N-isopropylacrylamide) (PVDF/SiO2-PNIPAM) mixed matrix membranes were synthesized using diffusion induced phase separation techniques via direct blending method. The effects of SiO2-PNIPAM particle concentrations and surface cavity size on membrane physicochemical properties were investigated through oil emulsion separation using cross-flow ultrafiltration. Compared with pristine PVDF membrane, the PVDF/SiO2-PNIPAM membrane showed higher alternated thermal cleaning ratios (N = 2.04) especially at higher SiO2-PNIPAM particle concentrations. Proper control of cavity size allows better particles actuation and minimized the surface roughness that would induce fouling phenomenon. The flux recovery ratio of 69.91% can be achieved by preparing the membrane using dope solution at 25 °C, coagulation bath temperature at 40 °C at particle dosage of 1.0 wt.% (M25-40/1.0). It was found that the actuation force as a result of temperature swing is responsible for loosening the irreversible fouling layer (gel layer) on the membrane surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 408, 15 April 2017, Pages 1-12
Journal: Desalination - Volume 408, 15 April 2017, Pages 1-12
نویسندگان
H.P. Ngang, A.L. Ahmad, S.C. Low, B.S. Ooi,