کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
628966 1455499 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrofluoric acid treatment for improved performance of a nanofiltration membrane
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Hydrofluoric acid treatment for improved performance of a nanofiltration membrane
چکیده انگلیسی
A method is proposed to improve the performance of a commercial nanofiltration membrane by treatment of the membrane with a hydrofluoric (HF) solution. A DS5DL (Osmonics) membrane, immersed for 14 days in HF (1% w/v), showed better solution permeability without deterioration of its potential for rejection of impurities. Such a prepared membrane was used for the purification of industrial phosphoric acid (8 M), which is characterized by a relatively high content of ionic impurities. The second application was for removal of Na2SO4 from industrial wastewater. In both cases the treated membrane showed an increment in flux and improvement in rejection of impurities as compared to the untreated membrane. The additional advantage was reduced membrane fouling after modification with HF.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 191, Issues 1–3, 10 May 2006, Pages 273-278
نویسندگان
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