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dc.contributor.authorPestana, Carlos J.
dc.contributor.authorPortela Noronha, Jolita
dc.contributor.authorHui, Jianing
dc.contributor.authorEdwards, Christine
dc.contributor.authorGunaratne, H. Q.Nimal
dc.contributor.authorIrvine, John T.S.
dc.contributor.authorRobertson, Peter K.J.
dc.contributor.authorCapelo-Neto, José
dc.contributor.authorLawton, Linda A.
dc.date.accessioned2021-07-21T23:35:21Z
dc.date.available2021-07-21T23:35:21Z
dc.date.issued2020-11-25
dc.identifier.citationPestana , C J , Portela Noronha , J , Hui , J , Edwards , C , Gunaratne , H Q N , Irvine , J T S , Robertson , P K J , Capelo-Neto , J & Lawton , L A 2020 , ' Photocatalytic removal of the cyanobacterium Microcystis aeruginosa PCC7813 and four microcystins by TiO 2 coated porous glass beads with UV-LED irradiation ' , Science of the Total Environment , vol. 745 , 141154 . https://doi.org/10.1016/j.scitotenv.2020.141154en
dc.identifier.issn0048-9697
dc.identifier.otherPURE: 269495364
dc.identifier.otherPURE UUID: 41d6a589-5785-40ee-9a40-0a8cd9232a65
dc.identifier.otherScopus: 85088741674
dc.identifier.otherORCID: /0000-0002-8394-3359/work/78527538
dc.identifier.otherWOS: 000579365600076
dc.identifier.urihttp://hdl.handle.net/10023/23614
dc.descriptionThe authors acknowledge the Engineering and Physical Sciences Research Council (EPSRC) for funding this research [EP/P029280/1].en
dc.description.abstractCyanobacteria and their toxic secondary metabolites are a challenge in water treatment due to increased biomass and dissolved metabolites in the raw water. Retrofitting existing water treatment infrastructure is prohibitively expensive or unfeasible, hence ‘in-reservoir’ treatment options are being explored. In the current study, a treatment system was able to photocatalytically inhibit the growth of Microcystis aeruginosa and remove released microcystins by photocatalysis using titanium dioxide coated, porous foamed glass beads and UV-LEDs (365 nm). A 35% reduction of M. aeruginosa PCC7813 cell density compared to control samples was achieved in seven days. As a function of cell removal, intracellular microcystins (microcystin-LR, -LY, -LW, and -LF) were removed by 49% from 0.69 to 0.35 μg mL−1 in seven days. Microcystins that leaked into the surrounding water from compromised cells were completely removed by photocatalysis. The findings of the current study demonstrate the feasibility of an in-reservoir treatment unit applying low cost UV-LEDs and porous foamed beads made from recycled glass coated with titanium dioxide as a means to control cyanobacteria and their toxins before they can reach the water treatment plant.
dc.language.isoeng
dc.relation.ispartofScience of the Total Environmenten
dc.rightsCopyright © 2020 Elsevier B.V. All rights reserved. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1016/j.scitotenv.2020.141154en
dc.subjectCyanobacteriaen
dc.subjectCyanotoxinsen
dc.subjectPhotocatalysisen
dc.subjectTitanium dioxideen
dc.subjectUV-LEDen
dc.subjectWater treatmenten
dc.subjectQD Chemistryen
dc.subjectEnvironmental Engineeringen
dc.subjectEnvironmental Chemistryen
dc.subjectWaste Management and Disposalen
dc.subjectPollutionen
dc.subjectNDASen
dc.subject.lccQDen
dc.titlePhotocatalytic removal of the cyanobacterium Microcystis aeruginosa PCC7813 and four microcystins by TiO2 coated porous glass beads with UV-LED irradiationen
dc.typeJournal articleen
dc.description.versionPostprinten
dc.contributor.institutionUniversity of St Andrews.School of Chemistryen
dc.contributor.institutionUniversity of St Andrews.Centre for Designer Quantum Materialsen
dc.contributor.institutionUniversity of St Andrews.EaSTCHEMen
dc.identifier.doihttps://doi.org/10.1016/j.scitotenv.2020.141154
dc.description.statusPeer revieweden
dc.date.embargoedUntil2021-07-22


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