File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Fast polydopamine coating on reverse osmosis membrane: Process investigation and membrane performance study

TitleFast polydopamine coating on reverse osmosis membrane: Process investigation and membrane performance study
Authors
KeywordsPolydopamine
Reverse osmosis
Coating
Issue Date2019
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/jcis
Citation
Journal of Colloid and Interface Science, 2019, v. 535, p. 239-244 How to Cite?
AbstractWe report a novel membrane surface modification method using a fast polydopamine coating (fPDAc) strategy. Specifically, NaIO4 was introduced in the coating process to accelerate the polydopamine deposition rate. Surface properties and separation performances of fPDAc-coated reverse osmosis membranes were characterized and compared to those obtained using the conventional slow polydopamine coating (sPDAc) strategy. Quartz crystal microbalance measurements showed greatly increased polydopamine deposition rate using the fPDAc method, resulting in a reduction of 97% coating time to reach an areal mass of 2000 ng/cm2. Both fPDAc and sPDAc enhanced the surface hydrophilicity and reduced the membrane surface charge. At relatively low areal mass deposition (<1000 ng/cm2), fPDAc-coated membranes showed improved NaCl rejection together with only mild loss of pure water flux. Nevertheless, this rejection enhancement effect was not noticeable when extensive polydopamine coating was applied due to the undesirable cake-enhanced concentration polarization effect. The extensive polydopamine coating was further accompanied with severe loss of membrane permeability, suggesting that shorter coating time (e.g., 4 min) is preferred using the fPDAc method. Our study provides a more rapid and effective membrane surface coating method compared to the conventional sPDAc method.
Persistent Identifierhttp://hdl.handle.net/10722/272860
ISSN
2017 Impact Factor: 5.091
2015 SCImago Journal Rankings: 1.126

 

DC FieldValueLanguage
dc.contributor.authorWang, J-
dc.contributor.authorGuo, H-
dc.contributor.authorShi, X-
dc.contributor.authorYao, Z-
dc.contributor.authorQing, W-
dc.contributor.authorLiu, F-
dc.contributor.authorTang, CY-
dc.date.accessioned2019-08-06T09:17:55Z-
dc.date.available2019-08-06T09:17:55Z-
dc.date.issued2019-
dc.identifier.citationJournal of Colloid and Interface Science, 2019, v. 535, p. 239-244-
dc.identifier.issn0021-9797-
dc.identifier.urihttp://hdl.handle.net/10722/272860-
dc.description.abstractWe report a novel membrane surface modification method using a fast polydopamine coating (fPDAc) strategy. Specifically, NaIO4 was introduced in the coating process to accelerate the polydopamine deposition rate. Surface properties and separation performances of fPDAc-coated reverse osmosis membranes were characterized and compared to those obtained using the conventional slow polydopamine coating (sPDAc) strategy. Quartz crystal microbalance measurements showed greatly increased polydopamine deposition rate using the fPDAc method, resulting in a reduction of 97% coating time to reach an areal mass of 2000 ng/cm2. Both fPDAc and sPDAc enhanced the surface hydrophilicity and reduced the membrane surface charge. At relatively low areal mass deposition (<1000 ng/cm2), fPDAc-coated membranes showed improved NaCl rejection together with only mild loss of pure water flux. Nevertheless, this rejection enhancement effect was not noticeable when extensive polydopamine coating was applied due to the undesirable cake-enhanced concentration polarization effect. The extensive polydopamine coating was further accompanied with severe loss of membrane permeability, suggesting that shorter coating time (e.g., 4 min) is preferred using the fPDAc method. Our study provides a more rapid and effective membrane surface coating method compared to the conventional sPDAc method.-
dc.languageeng-
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/jcis-
dc.relation.ispartofJournal of Colloid and Interface Science-
dc.subjectPolydopamine-
dc.subjectReverse osmosis-
dc.subjectCoating-
dc.titleFast polydopamine coating on reverse osmosis membrane: Process investigation and membrane performance study-
dc.typeArticle-
dc.identifier.emailGuo, H: guohao7@hku.hk-
dc.identifier.emailTang, CY: tangc@hku.hk-
dc.identifier.authorityTang, CY=rp01765-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jcis.2018.10.016-
dc.identifier.pmid30312949-
dc.identifier.scopuseid_2-s2.0-85054464466-
dc.identifier.hkuros299803-
dc.identifier.volume535-
dc.identifier.spage239-
dc.identifier.epage244-
dc.publisher.placeUnited States-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats