کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
626599 1455449 2009 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microfiltration of microparticulate boron adsorbent suspensions in submerged hollow fibre and capillary modules
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Microfiltration of microparticulate boron adsorbent suspensions in submerged hollow fibre and capillary modules
چکیده انگلیسی
Suspensions of a microparticulate boron adsorbent can be effectively concentrated to relatively high concentrations of about 11 mass% by microfiltration in aerated submerged modules using hydrophilic capillary and hydrophobic polypropylene hollow fibre membranes. With the increasing trans-membrane pressure difference, the permeate flux increases significantly at suspension concentrations below 7 and 4 mass% for hydrophilic and hydrophobic membrane, respectively. The permeate flux is higher for the hydrophilic membrane than for the hydrophobic one. Concentration dependence of flux for the hydrophilic membrane shows only a slight decrease of the flux with increasing concentration of the suspension, up to 7 mass%, while the flux through the hydrophobic membrane decreases much in this interval. The permeate flux at the trans-membrane pressure of 40 kPa for suspensions with 7 mass% of the adsorbent is about 72 and 14 dm3m−2h−1 for the hydrophilic and the hydrophobic membrane, respectively. Backwashing of the membrane with a reversed flow of permeate was tested in a module with a hydrophilic membrane and was found successful in keeping the membrane performance stable for a shorter term of operation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 241, Issues 1–3, 31 May 2009, Pages 138-147
نویسندگان
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