PMID: 16509346Mar 3, 2006Paper

Relating organic fouling of reverse osmosis membranes to intermolecular adhesion forces

Environmental Science & Technology
Sangyoup Lee, Menachem Elimelech

Abstract

Organic fouling of reverse osmosis (RO) membranes and its relation to foulant--foulant intermolecular adhesion forces has been investigated. Alginate and Suwannee River natural organic matter were used as model organic foulants. Atomic force microscopy was utilized to determine the adhesion force between bulk organic foulants and foulants deposited on the membrane surface under various solution chemistries. The measured adhesion force was related to the RO fouling rate determined from fouling experiments under solution chemistries similar to those used in the AFM measurements. A remarkable correlation was obtained between the measured adhesion force and the fouling rate under the solution chemistries investigated. Fouling was more severe at solution chemistries that resulted in larger adhesion forces, namely, lower pH, higher ionic strength, presence of calcium ions (but not magnesium ions), and higher mass ratio of alginate to Suwannee River natural organic matter. The significant adhesion force measured with alginate in the presence of calcium ions indicated the formation of a crossed-linked alginate gel layer during fouling through intermolecular bridging among alginate molecules.

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Citations

Sep 28, 2013·Water Research·Shujuan Meng, Yu Liu
Apr 18, 2013·Environmental Science & Technology·Long-Fei WangXiang-Ke Wang
Feb 2, 2016·Environmental Science & Technology·Zhangxin WangShihong Lin
Dec 29, 2015·Environmental Technology·Mayur Milan Kale, Kripa Shankar Singh
Aug 1, 2014·Journal of Environmental Sciences (China)·Junseok LeeSeungkwan Hong
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Jun 30, 2007·Bioresource Technology·Chun-Han Ko, Shiao-Shing Chen
Mar 26, 2016·Colloids and Surfaces. B, Biointerfaces·Yara N DahdalHanna Rapaport
Oct 28, 2015·Environmental Science & Technology·Ming XieMenachem Elimelech
May 15, 2007·Advances in Colloid and Interface Science·Yuncheng LiangVictor Starov
Nov 26, 2010·Advances in Colloid and Interface Science·Chuyang Y TangAnthony G Fane
Feb 14, 2014·TheScientificWorldJournal·Vedat UyakIsmail Koyuncu
Jul 3, 2007·Water Research·Ryan W HollowayTzahi Y Cath
Jan 18, 2017·Environmental Science & Technology·Caihong LiuMenachem Elimelech
Dec 17, 2014·Environmental Science & Technology·Edo Bar-ZeevMenachem Elimelech

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