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dc.contributor.authorAlshahri, Abdullah
dc.contributor.authorFortunato, Luca
dc.contributor.authorGhaffour, NorEddine
dc.contributor.authorLeiknes, TorOve
dc.date.accessioned2021-01-28T08:33:46Z
dc.date.available2021-01-28T08:33:46Z
dc.date.issued2021-01
dc.date.submitted2020-10-15
dc.identifier.citationAlshahri, A. H., Fortunato, L., Ghaffour, N., & Leiknes, T. (2021). Controlling Harmful Algal Blooms (HABs) by Coagulation-Flocculation-Sedimentation using liquid ferrate and clay. Chemosphere, 129676. doi:10.1016/j.chemosphere.2021.129676
dc.identifier.issn0045-6535
dc.identifier.doi10.1016/j.chemosphere.2021.129676
dc.identifier.urihttp://hdl.handle.net/10754/667077
dc.description.abstractHarmful algal blooms (HABs) occur worldwide and threaten the quality of marine life, public health, and membrane facilities in Seawater Reverse Osmosis (SWRO) desalination plants. The effects of HABs on seawater desalination plants include extensive membrane fouling, increased coagulant consumption and plant shutdown. To determine how to mitigate such effects, this study assessed if low doses (0.01mg/L, 0.10 mg/L, and 1.00 mg/L) of liquid ferrate (58% yield) and kaolin or montmorillonite clays alone could remove algal organic matter in coagulation-flocculation-sedimentation (CFS) pretreatment desalination systems. Results showed that 0.01mg/L of liquid ferrate coagulant removed 42% of dissolved organic carbon (DOC), 52% of biopolymers (BP), 71% of algal cells, and 99.5% of adenosine triphosphate (ATP). At a dose of 0.01mg/L, clays exhibited high removal of turbidity (up to 88%), BP (up to 80%) and algal cells (up to 67%). The combination of liquid ferrate (58% yield) as a coagulant with kaolin or montmorillonite clays as coagulant aids in CFS pretreatment led to 72% removal of DOC, 86% of BP, and 84% of algal cells with a fixed dose of 0.01 mg/L for each. Findings from this study can help SWRO plants improve the performance of pretreatment systems during algal bloom events by reducing the consumption of coagulants while also maintaining high removal efficiencies.
dc.description.sponsorshipThe research reported in this paper was supported by funding from King Abdullah University of Science and Technology (KAUST). The authors acknowledge help, assistance and support from the Water Desalination and Reuse Center (WDRC) staff.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0045653521001454
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Chemosphere. 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 Chemosphere, [, , (2021-01)] DOI: 10.1016/j.chemosphere.2021.129676 . © 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.titleControlling Harmful Algal Blooms (HABs) by Coagulation-Flocculation-Sedimentation using liquid ferrate and clay
dc.typeArticle
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalChemosphere
dc.rights.embargodate2023-01-01
dc.eprint.versionPost-print
dc.contributor.institutionCivil Engineering Department, College of Engineering, Taif University, Taif 21099, Saudi Arabia.
dc.identifier.pages129676
kaust.personAlshahri, Abdullah Hassan Mohammed
kaust.personFortunato, Luca
kaust.personGhaffour, Noreddine
kaust.personLeiknes, TorOve
dc.date.accepted2021-01-15
refterms.dateFOA2021-01-28T08:34:24Z
kaust.acknowledged.supportUnitWater Desalination and Reuse Center (WDRC)


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