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dc.contributor.authorKim, Youngjin
dc.contributor.authorLi, Sheng
dc.contributor.authorGhaffour, NorEddine
dc.date.accessioned2020-01-13T10:44:04Z
dc.date.available2020-01-13T10:44:04Z
dc.date.issued2019-12-10
dc.identifier.citationKim, Y., Li, S., & Ghaffour, N. (2020). Evaluation of different cleaning strategies for different types of forward osmosis membrane fouling and scaling. Journal of Membrane Science, 596, 117731. doi:10.1016/j.memsci.2019.117731
dc.identifier.doi10.1016/j.memsci.2019.117731
dc.identifier.urihttp://hdl.handle.net/10754/660995
dc.description.abstractIn this study, various cleaning methods are investigated to effectively control membrane fouling (i.e., organic fouling, colloidal fouling and scaling) in forward osmosis (FO). Simple physical cleanings (i.e., hydraulic flushing and osmotic backwashing) are firstly employed to remove membrane fouling. Both methods achieved higher than 95% efficiency and osmotic backwashing has a better efficiency for organic fouling and scaling in long-term operation, but colloidal fouling was not removed. To enhance the efficiency, intense physical cleanings (i.e., air scouring and the combination of various physical cleaning) and chemical cleanings (i.e., EDTA, low pH and high pH) were conducted but could not remove the fouling layer possibly because of the polymerization of silica colloids. Lastly, four hybrid mitigation methods (i.e., low pH DS, pulsed flow, high crossflow, and periodic sparging of CO2 saturated solution) followed by hydraulic flushing were examined. The combination of CO2 saturated solution and hydraulic flushing completely removed the fouling layer because CO2 bubbles weakened the interaction between the fouling layer and the membrane surface. Periodic air scouring also exhibited similar effect on the fouling layer. Therefore, periodic air scouring can be more feasible option to control the silica colloidal fouling but not organic fouling.
dc.description.sponsorshipThe research reported in this paper was supported by King Abdullah University of Science and Technology (KAUST), Saudi Arabia, through Competitive Research Grant Program - CRG2017 (CRG6), Project # UFR/1/3404-01. Authors extend their gratitude to the Water Desalination and Reuse Center (WDRC) staff for their continuous support.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0376738819327425
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. 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 Journal of Membrane Science, [[Volume], [Issue], (2019-12-10)] DOI: 10.1016/j.memsci.2019.117731 . © 2019. 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.titleEvaluation of different cleaning strategies for different types of forward osmosis membrane fouling and scaling
dc.typeArticle
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.identifier.journalJournal of Membrane Science
dc.rights.embargodate2021-12-10
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Environmental Systems Engineering, Sejong Campus, Korea University, 2511, Sejong-ro, Jochiwon-eup, Sejong-si, Republic of Korea
dc.contributor.institutionGuangdong Key Laboratory of Membrane Materials and Speration Technology, Guangzhou Institute of Advanced Technology, CAS, Haibin Road #1121, Nansha District, Guangzhou, 511458, China
dc.contributor.institutionQingdao Yonglixing Water Purification Technology Ltd Company, Miaoling Road #36, Laoshan District, Qingdao, 511458, China
kaust.personKim, Youngjin
kaust.personLi, Sheng
kaust.personGhaffour, Noreddine
kaust.grant.numberCRG2017
refterms.dateFOA2020-01-13T13:09:17Z
kaust.acknowledged.supportUnitCompetitive Research
kaust.acknowledged.supportUnitWater Desalination and Reuse Center (WDRC)
dc.date.published-online2019-12-10
dc.date.published-print2020-02


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