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dc.contributor.authorAn, Alicia Kyoungjin
dc.contributor.authorGuo, Jiaxin
dc.contributor.authorJeong, Sanghyun
dc.contributor.authorLee, Eui-Jong
dc.contributor.authorTabatabai, S. Assiyeh Alizadeh
dc.contributor.authorLeiknes, TorOve
dc.date.accessioned2016-07-28T13:22:09Z
dc.date.available2016-07-28T13:22:09Z
dc.date.issued2016-07-26
dc.identifier.citationHigh flux and antifouling properties of negatively charged membrane for dyeing wastewater treatment by membrane distillation 2016 Water Research
dc.identifier.issn00431354
dc.identifier.pmid27486044
dc.identifier.doi10.1016/j.watres.2016.07.060
dc.identifier.urihttp://hdl.handle.net/10754/617693
dc.description.abstractThis study investigated the applicability of membrane distillation (MD) to treat dyeing wastewater discharged by the textile industry. Four different dyes containing methylene blue (MB), crystal violet (CV), acid red 18 (AR), and acid yellow 36 (AY) were tested. Two types of hydrophobic membranes made of polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVDF) were used. The membranes were characterized by testing against each dye (foulant-foulant) and the membrane–dye (membrane-foulant) interfacial interactions and their mechanisms were identified. The MD membranes possessed negative charges, which facilitated the treatment of acid and azo dyes of the same charge and showed higher fluxes. In addition, PTFE membrane reduced the wettability with higher hydrophobicity of the membrane surface. The PTFE membrane evidenced especially its resistant to dye absorption, as its strong negative charge and chemical structure caused a flake-like (loose) dye–dye structure to form on the membrane surface rather than in the membrane pores. This also enabled the recovery of flux and membrane properties by water flushing (WF), thereby direct-contact MD with PTFE membrane treating 100 mg/L of dye mixtures showed stable flux and superior color removal during five days operation. Thus, MD shows a potential for stable long-term operation in conjunction with a simple membrane cleaning process, and its suitability in dyeing wastewater treatment.
dc.description.sponsorshipWe acknowledge the financial support from City University of Hong Kong under its Start-up Grant for new faculty (Grant No. 7200447).
dc.language.isoen
dc.publisherElsevier BV
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0043135416305747
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Water Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Water Research, 25 July 2016. DOI: 10.1016/j.watres.2016.07.060
dc.subjectDyeing wastewater
dc.subjectHydrophobic membrane
dc.subjectMembrane distillation
dc.subjectMembrane fouling
dc.subjectWater flushing
dc.titleHigh flux and antifouling properties of negatively charged membrane for dyeing wastewater treatment by membrane distillation
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.eprint.versionPost-print
dc.contributor.institutionSchool of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personJeong, Sanghyun
kaust.personTabatabai, S. Assiyeh Alizadeh
kaust.personLeiknes, TorOve
refterms.dateFOA2018-07-25T00:00:00Z
dc.date.published-online2016-07-26
dc.date.published-print2016-10


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