Effects of fouling on separation performance by forward osmosis: the role of specific organic foulants

Environmental Science and Pollution Research International
Lei ZhengLong D Nghiem

Abstract

In this study, forward osmosis (FO) membranes and fouling solutions were systematically characterized to elucidate the effects of organic fouling on the rejection of two pharmaceutically active compounds, namely, sulfamethoxazole and carbamazepine. Municipal wastewater resulted in a more severe flux decline compared to humic acid and sodium alginate fouling solutions. This result is consistent with the molecular weight distribution of these foulant solutions. Liquid chromatography with organic carbon detection analysis shows that municipal wastewater consists of mostly low molecular weight acids and neutrals, which produce a more compact cake layer on the membrane surface. By contrast, humic acid and sodium alginate consist of large molecular weight humic substances and biopolymers, respectively. The results also show that membrane fouling can significantly alter the membrane surface charge and hydrophobicity as well as the reverse salt flux. In particular, the reverse salt flux of a fouled membrane was significantly higher than that under clean conditions. Although the rejection of sulfamethoxazole and carbamazepine by FO membrane was high, a discernible impact of fouling on their rejection could still be observed. The results...Continue Reading

References

Apr 13, 2004·Environmental Science & Technology·Long D NghiemMenachem Elimelech
Aug 26, 2006·Science·René P SchwarzenbachBernhard Wehrli
Aug 7, 2007·Journal of Bacteriology·Hans-Curt FlemmingDaniel J Wozniak
Mar 21, 2008·Nature·Mark A ShannonAnne M Mayes
Jun 24, 2009·Environmental Science & Technology·Xue JinEric M V Hoek
Sep 22, 2009·Environmental Science & Technology·Nathan T Hancock, Tzahi Y Cath
Jun 10, 2010·Environmental Science & Technology·William A PhillipMenachem Elimelech
Nov 8, 2011·Water Research·Rodrigo Valladares LinaresGary Amy
Nov 19, 2013·Environmental Science & Technology·Ming XieMenachem Elimelech
Feb 21, 2014·Environmental Science & Technology·Bryan D CodayTzahi Y Cath
Jun 27, 2015·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Bilal AftabNicholas P Hankins

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Citations

Nov 20, 2021·Environmental Science and Pollution Research International·Anuja MaitreyaHemant J Purohit

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