Prediction of fouling resistance and permeate flux in cross-flow micellar-enhanced ultrafiltration (MEUF)

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• 作者：Jin-Hui Huang^a ; ^b ; ^{huangjinhui_59@163.com} ; Shao-Hui Guo^a ; ^b ; Guang-Ming Zeng^a ; ^b ; ; Ya-Lan Xiong^a ; ^b ; Dong-Mei Zhang^a ; ^b ; Xiao-Jiao Tang^a ; ^b ; Geng-Xin Xie^a ; ^b
• 关键词：Model ; Permeate flux ; Fouling resistance ; Cross-flow ; MEUF
• 刊名：Colloids and Surfaces A ; Physicochemical and Engineering Aspects
• 出版年：2012
• 期刊代码：22_09277757
• 类别：ch
• 出版时间：5 May, 2012
• 卷：401
• 期：Complete
• 页码：81-89
• 文件大小：570 K

摘要

Cross-flow micellar-enhanced ultrafiltration had been used to separate pollutants from waste water effectively, while permeate flux decline with time because of the increase of fouling resistance. According to resistances in series theory, total transport resistance is the sum of two parts: membrane hydrodynamic resistance and fouling resistance. By observing material balance and hydrodynamic type of filtration, we proposed an analysis method of fouling resistance that was based on cross-flow filtration and took into account the presence of micelles instead of traditional cake resistance theory that was built from dead-end filtration. We found permeate flux decline not only by the relationship of time t^1/2 that traditional cake resistance theory said, but also by concentration of fouling layer 蠒 (or 蠁). Retentate non-recycled and retentate recycled cross-flow experiments were carried out under different operate conditions (i.e., transmembrane pressure (TMP) and initial concentration) by using artificial cadmium (Cd) contaminated water and sodium dodecyl sulfate (SDS) and models showed excellent accuracy to predict permeate flux through correlation r² from 0.935 to 0.990.