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Article: Advanced desalination of dye/NaCl mixtures by a loose nanofiltration membrane for digital ink-jet printing

TitleAdvanced desalination of dye/NaCl mixtures by a loose nanofiltration membrane for digital ink-jet printing
Authors
KeywordsDiafiltration
Digital printing
Dye/salt mixture
Fractionation
Loose nanofiltration membrane
Issue Date2018
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/seppur
Citation
Separation and Purification Technology, 2018, v. 197, p. 27-35 How to Cite?
AbstractIn digital printing, a high salt content in dye solutions is detrimental, which calls for effective strategy for dye/salt fractionation. In this study, a loose nanofiltration (NF) membrane Sepro 2A was employed to desalinate diverse dye species (2 reactive dyes and 4 cationic dyes). This membrane, with a molecular weight cutoff of 490 Da, showed consistently high rejections to all the reactive and cationic dyes (>97.7%). Operational conditions such as dye concentrations and applied pressures have limited effects on the rejection of the membrane. An integrated NF-diafiltration process, involving a pre-concentration and a diafiltration step, was specifically designed for the fractionation of dye/NaCl mixtures. This loose NF membrane showed >99.7% rejection to reactive dyes (reactive blue 2 and reactive orange 16) and ca. 99.3% salt removal with ca. 2.0% dye loss after 5.0 diavolumes. However, the NF membrane experienced a 15.9% loss to methylene blue due to the lower rejection to this model cationic dye (97.2%). The current study provides important insights into dye/salt fractionation by loose NF membranes for digital ink-jet printing. © 2017 Elsevier B.V.
Persistent Identifierhttp://hdl.handle.net/10722/264029
ISSN
2017 Impact Factor: 3.927
2015 SCImago Journal Rankings: 1.100
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYe, W-
dc.contributor.authorLin, J-
dc.contributor.authorBorrego, R-
dc.contributor.authorChen, D-
dc.contributor.authorSotto, A-
dc.contributor.authorLuis, P-
dc.contributor.authorLiu, M-
dc.contributor.authorZhao, S-
dc.contributor.authorTang, C-
dc.contributor.authorVan der Bruggen, B-
dc.date.accessioned2018-10-22T07:48:22Z-
dc.date.available2018-10-22T07:48:22Z-
dc.date.issued2018-
dc.identifier.citationSeparation and Purification Technology, 2018, v. 197, p. 27-35-
dc.identifier.issn1383-5866-
dc.identifier.urihttp://hdl.handle.net/10722/264029-
dc.description.abstractIn digital printing, a high salt content in dye solutions is detrimental, which calls for effective strategy for dye/salt fractionation. In this study, a loose nanofiltration (NF) membrane Sepro 2A was employed to desalinate diverse dye species (2 reactive dyes and 4 cationic dyes). This membrane, with a molecular weight cutoff of 490 Da, showed consistently high rejections to all the reactive and cationic dyes (>97.7%). Operational conditions such as dye concentrations and applied pressures have limited effects on the rejection of the membrane. An integrated NF-diafiltration process, involving a pre-concentration and a diafiltration step, was specifically designed for the fractionation of dye/NaCl mixtures. This loose NF membrane showed >99.7% rejection to reactive dyes (reactive blue 2 and reactive orange 16) and ca. 99.3% salt removal with ca. 2.0% dye loss after 5.0 diavolumes. However, the NF membrane experienced a 15.9% loss to methylene blue due to the lower rejection to this model cationic dye (97.2%). The current study provides important insights into dye/salt fractionation by loose NF membranes for digital ink-jet printing. © 2017 Elsevier B.V.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/seppur-
dc.relation.ispartofSeparation and Purification Technology-
dc.subjectDiafiltration-
dc.subjectDigital printing-
dc.subjectDye/salt mixture-
dc.subjectFractionation-
dc.subjectLoose nanofiltration membrane-
dc.titleAdvanced desalination of dye/NaCl mixtures by a loose nanofiltration membrane for digital ink-jet printing-
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.seppur.2017.12.045-
dc.identifier.scopuseid_2-s2.0-85039744673-
dc.identifier.hkuros295691-
dc.identifier.volume197-
dc.identifier.spage27-
dc.identifier.epage35-
dc.identifier.isiWOS:000428973600004-
dc.publisher.placeUnited Kingdom-

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