File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Theoretical and experimental study of organic fouling of loose nanofiltration membrane

TitleTheoretical and experimental study of organic fouling of loose nanofiltration membrane
Authors
KeywordsLoose NF membrane
Humic acid
Organic fouling
Hydrodynamics
COMSOL simulation
Issue Date2018
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/issn/18761070
Citation
Journal of the Taiwan Institute of Chemical Engineers, 2018, v. 93, p. 509-518 How to Cite?
AbstractLoose nanofiltration (NF) membranes are an attractive avenue in effective separation of organic matters and salts for resource recovery from highly-loaded wastewater. However, membrane fouling remains an unclear and complex factor in practical applications. In this work, the flux of a loose NF membrane fouled by humic acid at various solution compositions was systematically investigated. The strong hydrophilicity of the loose NF membrane allows for slight deposition of humic acid on the membrane surface, yielding an outstanding antifouling performance. However, a moderate flux decline was observed at low pH and high ionic strength, due to reduction in charge density of membrane surface for formation of a porous foulant layer. At higher ionic strength, cake-enhanced concentration polarization was the fouling mechanism that dominates the membrane flux. The presence of calcium ions induced bridging between humic acid molecules to generate a compact foulant layer, tremendously deteriorating the membrane flux. Based on COMSOL simulation for the membrane module, the hydrodynamics near the membrane surface had a more significant effect on membrane fouling than the solution chemistry, which is consistent with scanning electronic microscopy observation. This indicates benign hydrodynamic condition can be an effective strategy to fouling control for loose NF membranes.
Persistent Identifierhttp://hdl.handle.net/10722/272850
ISSN
2017 Impact Factor: 3.849
2015 SCImago Journal Rankings: 0.736

 

DC FieldValueLanguage
dc.contributor.authorYe, W-
dc.contributor.authorBernstein, NJ-
dc.contributor.authorLin, J-
dc.contributor.authorJordens, J-
dc.contributor.authorZhao, S-
dc.contributor.authorTang, C-
dc.contributor.authorVan der Bruggen, B-
dc.date.accessioned2019-08-06T09:17:45Z-
dc.date.available2019-08-06T09:17:45Z-
dc.date.issued2018-
dc.identifier.citationJournal of the Taiwan Institute of Chemical Engineers, 2018, v. 93, p. 509-518-
dc.identifier.issn1876-1070-
dc.identifier.urihttp://hdl.handle.net/10722/272850-
dc.description.abstractLoose nanofiltration (NF) membranes are an attractive avenue in effective separation of organic matters and salts for resource recovery from highly-loaded wastewater. However, membrane fouling remains an unclear and complex factor in practical applications. In this work, the flux of a loose NF membrane fouled by humic acid at various solution compositions was systematically investigated. The strong hydrophilicity of the loose NF membrane allows for slight deposition of humic acid on the membrane surface, yielding an outstanding antifouling performance. However, a moderate flux decline was observed at low pH and high ionic strength, due to reduction in charge density of membrane surface for formation of a porous foulant layer. At higher ionic strength, cake-enhanced concentration polarization was the fouling mechanism that dominates the membrane flux. The presence of calcium ions induced bridging between humic acid molecules to generate a compact foulant layer, tremendously deteriorating the membrane flux. Based on COMSOL simulation for the membrane module, the hydrodynamics near the membrane surface had a more significant effect on membrane fouling than the solution chemistry, which is consistent with scanning electronic microscopy observation. This indicates benign hydrodynamic condition can be an effective strategy to fouling control for loose NF membranes.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/issn/18761070-
dc.relation.ispartofJournal of the Taiwan Institute of Chemical Engineers-
dc.subjectLoose NF membrane-
dc.subjectHumic acid-
dc.subjectOrganic fouling-
dc.subjectHydrodynamics-
dc.subjectCOMSOL simulation-
dc.titleTheoretical and experimental study of organic fouling of loose nanofiltration membrane-
dc.typeArticle-
dc.identifier.emailTang, C: tangc@hku.hk-
dc.identifier.authorityTang, C=rp01765-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jtice.2018.08.029-
dc.identifier.scopuseid_2-s2.0-85052942455-
dc.identifier.hkuros299789-
dc.identifier.volume93-
dc.identifier.spage509-
dc.identifier.epage518-
dc.publisher.placeNetherlands-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats