کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9681109 1455511 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of an integrally skinned ultrafiltration membrane for wastewater treatment: effect of different formulations of PSf/NMP/PVP on flux and rejection
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Development of an integrally skinned ultrafiltration membrane for wastewater treatment: effect of different formulations of PSf/NMP/PVP on flux and rejection
چکیده انگلیسی
Integrally skinned ultrafiltration (UF) membranes for wastewater treatment were prepared by the phase-inversion process with an immersion precipitation technique to investigate the effect of different formulations on UF performance. Three new polymer solutions were used, consisting of polysulfone (PSf), 1-methyl-2-pyrrolidone (NMP) and polyvinylpyrrolidone (PVP). The polymer solution was formulated by varying polymer concentration, which is for PSf in the range of 18-22 wt%. Polyethylene glycols (PEG) with varying molecular weights were used to characterize the flux and rejection of the membrane. Results showed that the flux of the membrane decreased from 70.77 to 32.82 L/m2h while the separation performance for particle solutes increased from 10.31 to 33.89% at 2.5 bar with an increase in polymer concentration. This means that the outer skin layer of the membranes became apparently thicker and denser with increasing polymer concentration. On the other hand, an UF membrane from a dilute polymer solution produced a thin and porous skin layer, leading to a high value of flux but a relatively low percentage of rejection for PEG.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 179, Issues 1–3, 10 July 2005, Pages 257-263
نویسندگان
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