Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/161965
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dc.contributor.authorZhang, Yujunen_US
dc.contributor.authorChong, Jeng Yien_US
dc.contributor.authorXu, Rongen_US
dc.contributor.authorWang, Rongen_US
dc.date.accessioned2022-09-27T07:47:22Z-
dc.date.available2022-09-27T07:47:22Z-
dc.date.issued2022-
dc.identifier.citationZhang, Y., Chong, J. Y., Xu, R. & Wang, R. (2022). Hydrophobic ceramic membranes fabricated via fatty acid chloride modification for solvent resistant membrane distillation (SR-MD). Journal of Membrane Science, 658, 120715-. https://dx.doi.org/10.1016/j.memsci.2022.120715en_US
dc.identifier.issn0376-7388en_US
dc.identifier.urihttps://hdl.handle.net/10356/161965-
dc.description.abstractSolvent resistant membrane distillation (SR-MD) is a novel technology to effectively separate water from waste streams containing solvents with high boiling points, avoiding the high chemical costs and release of harmful gas in conventional treatments. Ceramic membranes are promising for this process as they are highly stable chemically but they require modification to tune the hydrophilicity to hydrophobicity. However, the widely used silanization for hydrophobic modification often involves expensive chemicals and may produce toxic substances. Here, we present a new hydrophobic modification method with the use of fatty acid chloride (FAC), as a greener and cheaper alternative to silanes. In the grafting reaction, the acyl chloride groups react with the –OH groups on the ceramic membranes to form strong ester bonds. We successfully grafted stearoyl chloride (SC) and palmitoyl chloride (PC) on the ceramic tubular membranes. With long carbon chains grafted, the modified membranes exhibited high hydrophobicity with a water contact angle >141° and a liquid entry pressure >3 bar. When tested in SR-MD with a feed solution containing 50 wt% dimethyl sulfoxide, the PC-modified membrane demonstrated a flux of 3.2 kg m−2 h−1, with rejection >98% and separation factor >110 at 60 °C, and a high flux of 4.5 kg m−2 h−1 with rejection >96% at 70 °C. The FAC-modified membranes allow a cost-effective treatment of challenging wastewater containing organic solvents through SR-MD.en_US
dc.description.sponsorshipEconomic Development Board (EDB)en_US
dc.language.isoenen_US
dc.relation.ispartofJournal of Membrane Scienceen_US
dc.rights© 2022 Elsevier B.V. All rights reserved.en_US
dc.subjectEngineering::Environmental engineeringen_US
dc.titleHydrophobic ceramic membranes fabricated via fatty acid chloride modification for solvent resistant membrane distillation (SR-MD)en_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.schoolInterdisciplinary Graduate School (IGS)en_US
dc.contributor.schoolSchool of Chemical and Biomedical Engineeringen_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.contributor.researchSingapore Membrane Technology Centreen_US
dc.identifier.doi10.1016/j.memsci.2022.120715-
dc.identifier.scopus2-s2.0-85132442558-
dc.identifier.volume658en_US
dc.identifier.spage120715en_US
dc.subject.keywordsHydrophobic Modificationen_US
dc.subject.keywordsCeramic Membranesen_US
dc.description.acknowledgementThe authors would like to acknowledge funding support from the Singapore Economic Development Board to the Singapore Membrane Technology Centre, Nanyang Environment & Water Research Institute at Nanyang Technological University, Singapore.en_US
item.fulltextNo Fulltext-
item.grantfulltextnone-
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