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dc.contributor.authorAli, Syed Muztuza
dc.contributor.authorKim,Youngjin
dc.contributor.authorQamar, Adnan
dc.contributor.authorNaidu, Gayathri
dc.contributor.authorPhuntsho, Sherub
dc.contributor.authorGhaffour, NorEddine
dc.contributor.authorVrouwenvelder, Johannes S.
dc.contributor.authorShon, Ho Kyong
dc.date.accessioned2021-07-07T13:49:46Z
dc.date.available2021-07-07T13:49:46Z
dc.date.issued2021-06-25
dc.date.submitted2021-03-12
dc.identifier.citationAli, S. M., Kim, Y., Qamar, A., Naidu, G., Phuntsho, S., Ghaffour, N., … Shon, H. K. (2021). Dynamic feed spacer for fouling minimization in forward osmosis process. Desalination, 515, 115198. doi:10.1016/j.desal.2021.115198
dc.identifier.issn0011-9164
dc.identifier.doi10.1016/j.desal.2021.115198
dc.identifier.urihttp://hdl.handle.net/10754/670073
dc.description.abstractIn this study, a dynamic feed spacer is used to minimize the fouling problem of forward osmosis (FO) membrane process. The conceptual design of the spacer consists of a series of microturbines assembled in ladder type filament cells and termed as turbospacer. It exploits the kinetic energy of the flowing feed solution to rotate the turbines and creates high flow turbulence in the feed channel to prevent the accumulation of foulants and related performance decline. This proof of concept study employed a 3D printed prototype of the proposed spacer in a lab-scale FO experimental setup to compare their performances with a symmetric non-woven spacer of the same thickness under the same operating condition as a reference. Primary effluent from municipal wastewater treatment plant was used as feed solution for a short term (6 days) fouling experiment in this study. Outcomes of the FO fouling experiment revealed that the turbospacer resulted in (i) a factor 2 lower spacer channel pressure drop built-up, and (ii) a 15% reduction in flux decline compared to the reference symmetric spacer. Almost 2.5 times lower foulant resistance was obtained by using the turbospacer at the end of the fouling experiment. In addition, the analysis of the foulant layer growth over a particular position of the membrane surface captured by an optical coherence tomography (OCT) device at different stages of the experiment exhibited that the turbospacer produced a thinner foulant layer. In summary, the turbospacer demonstrated better fouling prevention and control in the FO process.
dc.description.sponsorshipWe acknowledge the support from King Abdullah University of Science and Technology (KAUST), Saudi Arabia for the fabrication of the 3D printed spacers and the experimental analysis. This study is also supported by the Qatar National Research Fund under its National Priorities Research Program (NPRP 12S-0227-190166).
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0011916421002691
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Desalination. 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 Desalination, [515, , (2021-06-25)] DOI: 10.1016/j.desal.2021.115198 . © 2021. 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.titleDynamic feed spacer for fouling minimization in forward osmosis process
dc.typeArticle
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.identifier.journalDesalination
dc.rights.embargodate2023-06-25
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Civil and Environmental Engineering, University of Technology, Sydney, Post Box 129, Broadway, NSW, 2007, Australia
dc.contributor.institutionDepartment of Environmental Engineering, Korea University, 2511, Sejong-ro, Sejong-si, 30019, Republic of Korea
dc.identifier.volume515
dc.identifier.pages115198
kaust.personQamar, Adnan
kaust.personGhaffour, Noreddine
kaust.personVrouwenvelder, Johannes S.
dc.date.accepted2021-06-18
dc.identifier.eid2-s2.0-85108630901
refterms.dateFOA2021-07-15T05:28:05Z
dc.date.published-online2021-06-25
dc.date.published-print2021-11


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