کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7008443 1455351 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of low-pressure water softening hollow fiber membranes by polyelectrolyte deposition with two bilayers
ترجمه فارسی عنوان
تهیه غشای فیبر توخالی نرم کننده کم فشار توسط رسوب پلی الکترولیتی با دو لایه دو لایه
کلمات کلیدی
لایه لایه رسوب، پلی الکترولیت ها، نانوفیلتراسیون، غشای فیبر توخالی، فشار کار کم 2 بار،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی
Experiments revealed that the pH of the polyelectrolyte solution and supporting electrolyte concentration presented the most notable effects. For weak poly-cations, Poly(ethylenimine) (PEI) and Poly(allylamine hydrochloride) (PAH), the solution pH affected the membrane performance significantly, and high water permeability and divalent cation rejection were obtained at optimum pH values. Using a low concentration of supporting electrolyte at underneath layers was proved to be an effective way to increase water permeability while maintaining high salt rejection. A salt water flux (SWP) of 12 LMH/bar and 94% Mg2 + rejection was obtained by depositing only two bilayers of PSS/PAH polyelectrolytes on the PES substrate, while for the 3000 ppm mixed salt solution, the water permeability was 11 LMH/bar with Mg2 + and Ca2 + rejection as high as 90%. These promising results demonstrate that LBL technique is potentially applicable for preparing low-pressure water softening hollow fiber membranes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 344, 1 July 2014, Pages 64-70
نویسندگان
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