A sacrificial protective layer as fouling control strategy for nanofiltration in water treatment

Li, Sihang; Meng, Huanna; Wang, Haihua; Vrouwenvelder, Johannes S.; Li, Zhenyu

dc.contributor.author	Li, Sihang
dc.contributor.author	Meng, Huanna
dc.contributor.author	Wang, Haihua
dc.contributor.author	Vrouwenvelder, Johannes S.
dc.contributor.author	Li, Zhenyu
dc.date.accessioned	2022-05-08T10:27:12Z
dc.date.available	2022-05-08T10:27:12Z
dc.date.issued	2022-05-06
dc.identifier.citation	Li, S., Meng, H., Wang, H., Vrouwenvelder, J. S., & Li, Z. (2022). A sacrificial protective layer as fouling control strategy for nanofiltration in water treatment. Water Research, 118554. https://doi.org/10.1016/j.watres.2022.118554
dc.identifier.issn	0043-1354
dc.identifier.doi	10.1016/j.watres.2022.118554
dc.identifier.uri	http://hdl.handle.net/10754/676661
dc.description.abstract	High-performance nanofiltration (NF) membrane with super antifouling capability as well as reusability is highly desired in water treatment. A new antifouling strategy by a coating-decoating-recoating cycle was investigated for effective removal of fouling and restoring the original membrane performance. The functional membrane surface was fabricated by in-situ coating a ‘green’ and biodegradable carboxymethyl chitosan (CMCS) layer as physical barrier. The CMCS layer can be decoated and re-coated by simple procedures. Results showed that (i) the CMCS layer enhanced surface hydrophilicity, surface smoothness and fouling resistance of NF membrane, (ii) both the unfouled and fouled CMCS layer were easily decoated by the strong acid solution, (iii) the CMCS layer was easily re-coated by facile recoating and (iv) the water flux recovery ratio of membrane with coating layer was maintained more than 88.8% during fouling testing by natural organic matter (NOM) after four sequential cycles of coating, decoating and recoating process. The re-coated membrane exhibited stable, improved membrane operational and antifouling performance. The coating-decoating-recoating approach is proven to be low-cost and eco-friendly strategy for NOM fouling control on NF membrane in water treatment applications.
dc.description.sponsorship	Supported by the National Key R&D Plan for International Cooperation in Science and Technology Innovation (No. 2017YFE0181100) and National Nature Science Foundation of China (No. 21901212).
dc.publisher	Elsevier BV
dc.relation.url	https://linkinghub.elsevier.com/retrieve/pii/S0043135422005073
dc.rights	NOTICE: 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, [, , (2022-05-06)] DOI: 10.1016/j.watres.2022.118554 . © 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.title	A sacrificial protective layer as fouling control strategy for nanofiltration in water treatment
dc.type	Article
dc.contributor.department	Environmental Science and Engineering Program
dc.contributor.department	Water Desalination and Reuse Research Center (WDRC)
dc.contributor.department	Biological and Environmental Science and Engineering (BESE) Division
dc.identifier.journal	Water Research
dc.rights.embargodate	2024-05-06
dc.eprint.version	Post-print
dc.contributor.institution	College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
dc.identifier.pages	118554
kaust.person	Vrouwenvelder, Johannes S.