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dc.contributor.authorMyat, Darli Theint
dc.contributor.authorMergen, Max R D
dc.contributor.authorZhao, Oliver
dc.contributor.authorStewart, Matthew B.
dc.contributor.authorOrbell, John D.
dc.contributor.authorMerle, Tony
dc.contributor.authorCroue, Jean-Philippe
dc.contributor.authorGray, Stephen R.
dc.date.accessioned2015-08-03T11:12:06Z
dc.date.available2015-08-03T11:12:06Z
dc.date.issued2013-07
dc.identifier.issn00431354
dc.identifier.pmid23648287
dc.identifier.doi10.1016/j.watres.2013.03.056
dc.identifier.urihttp://hdl.handle.net/10754/562836
dc.description.abstractThe performance of ion exchange (IX) resin for organics removal from wastewater was assessed using advanced characterisation techniques for varying doses of IX. Organic characterisation using liquid chromatography with a photodiode array (PDA) and fluorescence spectroscopy (Method A), and UV254, organic carbon and organic nitrogen detectors (Method B), was undertaken on wastewater before and after magnetic IX treatment. Results showed partial removal of the biopolymer fraction at high IX doses. With increasing concentration of IX, evidence for nitrogen-containing compounds such as proteins and amino acids disappeared from the LC-OND chromatogram, complementary to the fluorescence response. A greater fluorescence response of tryptophan-like proteins (278nm/343nm) for low IX concentrations was consistent with aggregation of tryptophan-like compounds into larger aggregates, either by self-aggregation or with polysaccharides. Recycling of IX resin through multiple adsorption steps without regeneration maintained the high level of humics removal but there was no continued removal of biopolymer. Subsequent membrane filtration of the IX treated waters resulted in complex fouling trends. Filtration tests with either polypropylene (PP) or polyvinylidene fluoride (PVDF) membranes showed higher rates of initial fouling following treatment with high IX doses (10mL/L) compared to filtration of untreated water, while treatment with lower IX doses resulted in decreased fouling rates relative to the untreated water. However, at longer filtration times the rate of fouling of IX treated waters was lower than untreated water and the relative fouling rates corresponded to the amount of biopolymer material in the feed. It was proposed that the mode of fouling changed from pore constriction during the initial filtration period to filter cake build up at longer filtration times. The organic composition strongly influenced the rate of fouling during the initial filtration period due to competitive adsorption processes, while at longer filtration times the rate of fouling appeared to depend upon the amount of biopolymer material in the feed water. © 2013.
dc.description.sponsorshipThe authors are grateful to the ARC and Orica for financial support of this project (Australian Postgraduate Award-Industry: LP0989554). The authors would like to thank the Melbourne Water for providing water samples, Orica Watercare for providing MIEX (TM) resin and Siemens Water Technologies for providing membrane fibres used in this study.
dc.publisherElsevier BV
dc.subjectEffluent organic matter
dc.subjectIon exchange
dc.subjectLiquid chromatography
dc.subjectMicrofiltration
dc.subjectOrganic fouling
dc.titleEffect of IX dosing on polypropylene and PVDF membrane fouling control
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalWater Research
dc.contributor.institutionInstitute for Sustainability and Innovation (ISI), Victoria University, Melbourne, VIC 8001, Australia
dc.contributor.institutionOrica Watercare, Melbourne, VIC 3000, Australia
dc.contributor.institutionCollege of Engineering and Science, Victoria University, Melbourne, VIC 8001, Australia
kaust.personMerle, Tony
kaust.personCroue, Jean-Philippe


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