Effect of IX dosing on polypropylene and PVDF membrane fouling control

Handle URI:
http://hdl.handle.net/10754/562836
Title:
Effect of IX dosing on polypropylene and PVDF membrane fouling control
Authors:
Myat, Darli Theint; Mergen, Max R D; Zhao, Oliver; Stewart, Matthew B.; Orbell, John D.; Merle, Tony; Croue, Jean-Philippe; Gray, Stephen R.
Abstract:
The 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.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Water Desalination & Reuse Research Cntr; Biological and Environmental Sciences and Engineering (BESE) Division
Publisher:
Elsevier BV
Journal:
Water Research
Issue Date:
Jul-2013
DOI:
10.1016/j.watres.2013.03.056
PubMed ID:
23648287
Type:
Article
ISSN:
00431354
Sponsors:
The 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.
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorMyat, Darli Theinten
dc.contributor.authorMergen, Max R Den
dc.contributor.authorZhao, Oliveren
dc.contributor.authorStewart, Matthew B.en
dc.contributor.authorOrbell, John D.en
dc.contributor.authorMerle, Tonyen
dc.contributor.authorCroue, Jean-Philippeen
dc.contributor.authorGray, Stephen R.en
dc.date.accessioned2015-08-03T11:12:06Zen
dc.date.available2015-08-03T11:12:06Zen
dc.date.issued2013-07en
dc.identifier.issn00431354en
dc.identifier.pmid23648287en
dc.identifier.doi10.1016/j.watres.2013.03.056en
dc.identifier.urihttp://hdl.handle.net/10754/562836en
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.en
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.en
dc.publisherElsevier BVen
dc.subjectEffluent organic matteren
dc.subjectIon exchangeen
dc.subjectLiquid chromatographyen
dc.subjectMicrofiltrationen
dc.subjectOrganic foulingen
dc.titleEffect of IX dosing on polypropylene and PVDF membrane fouling controlen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentWater Desalination & Reuse Research Cntren
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalWater Researchen
dc.contributor.institutionInstitute for Sustainability and Innovation (ISI), Victoria University, Melbourne, VIC 8001, Australiaen
dc.contributor.institutionOrica Watercare, Melbourne, VIC 3000, Australiaen
dc.contributor.institutionCollege of Engineering and Science, Victoria University, Melbourne, VIC 8001, Australiaen
kaust.authorMerle, Tonyen
kaust.authorCroue, Jean-Philippeen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.