Microfiltration (MF) membrane fouling potential evaluation of protein with different ion strengths and divalent cations based on extended DLVO theory

被引：53

作者：

Ding, Yi ^{[2
]}

Tian, Yu ^{[1
,2
]}

Li, Zhipeng ^{[2
]}

Wang, Haoyu ^{[2
]}

Chen, Lin ^{[3
]}

机构：

[1] HIT, SKLUWRE, Harbin 150090, Peoples R China

[2] Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin 150090, Peoples R China

[3] Nanyang Technol Univ, Singapore Membrane Technol Ctr, Sch Civil & Environm Engn, Singapore 639798, Singapore

来源：

DESALINATION | 2013年 / 331卷

关键词：

Microfiltration membrane fouling; Protein fouling; XDLVO approach; Fouiant-MF membrane interaction energy; Foulant-foulant interaction energy; SOLUBLE MICROBIAL PRODUCTS; REVERSE-OSMOSIS MEMBRANES; NATURAL ORGANIC-MATTER; NANOFILTRATION; SURFACE; BIOREACTOR; DEPOSITION; ADHESION; CALCIUM; BSA;

D O I：

10.1016/j.desal.2013.10.017

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Membrane fouling is a major obstacle to the wide application of microfiltration membrane bioreactor (MF MBR). Protein-like substances have been known to contribute significantly to membrane fouling in MF MBRs. In this study, the effects of ionic strength and divalent cations on MF membrane fouling by protein were investigated. Fouling experiments showed that MF membrane fouling by protein was enhanced with increasing ionic strength and calcium ion addition. Measured interaction energies among protein molecules and between protein molecules and clean MF membrane confirmed the fouling trends of MF membrane. It was consistently shown that solution chemistries that induced higher fouling rates of MF membrane were associated with greater attractive and lower repulsive interaction energies among protein molecules and between protein molecules and clean MF membrane. Analysis of fouled MF membrane surface roughness further indicated that MF membrane surface easier. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：62 / 68

页数：7

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