کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9680790 | 1455504 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Critical flux detection in a silica scaling RO system
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Desalination of brackish water containing silica at high recovery levels leads to a rapid flux decline, due to the precipitation of a colloidal solution consisting of polymerized silica nano-particles. The critical flux (CF) phenomenon postulates that there is a certain permeate flux level below which the rate of flux decrease due to membrane fouling becomes negligible. The aim of this paper was to develop a simple technique for detecting the existence of a critical flux threshold limit under conditions at which the membrane surface is exposed to a constant precipitation potential. A series of experiments was carried out in a silica scaling tubular RO system. Experimental conditions were controlled such that the dissolved silica content on the membrane was held at the same supersaturation ratio level of 2.1-2.2 while varying the initial permeation flux value over the range of 17-45 l/h m2. The rate of flux decline was found to remain constant, irrespective of the permeate flux level examined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 186, Issues 1â3, 30 December 2005, Pages 311-318
Journal: Desalination - Volume 186, Issues 1â3, 30 December 2005, Pages 311-318
نویسندگان
Dmitry Lisitsin, David Hasson, Raphael Semiat,