Recovery of sludge produced from Ti-salt flocculation as pretreatment to seawater reverse osmosis

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Show simple item record Okour, Yousef Hussein en_US El Saliby, Ibrahim en_US Shon, Hokyong en_US Vigneswaran, Saravanamuth en_US Kim, J en_US Cho, Jaeweon en_US Kim, In en_US
dc.contributor.editor en_US 2010-05-28T09:47:55Z 2010-05-28T09:47:55Z 2009 en_US
dc.identifier 2008008343 en_US
dc.identifier.citation Okour Yousef Hussein et al. 2009, 'Recovery of sludge produced from Ti-salt flocculation as pretreatment to seawater reverse osmosis', Elsevier B.V., vol. 247, no. 1-3, pp. 53-63. en_US
dc.identifier.issn 0011-9164 en_US
dc.identifier.other C1 en_US
dc.description.abstract In this study, titanium tetrachloride (TiCl4), titanium sulfate (Ti(SO4)2) and ferric chloride (FeCl3) flocculation as a pretreatment to seawater reverse osmosis (SWRO) were investigated. Their ability to remove turbidity, seawater organic matter (SWOM) and controlling the feed water quality of SWRO was evaluated. Flux decline of SWRO and membrane autopsy were studied. Titanium dioxide (TiO2) produced from sludge after Ti-salt fl occulation was characterized in terms of particle structure and photocatalytic activity. A hybrid system of fl occulation followed by granular activated carbon (GAC) filtration was employed to remove the suspended micro-flocs after diff erent fl occulations. The optimum dose of 10 mg/L TiCl4 and FeCl3 were used. The turbidity removal for the three coagulants was marginal at different doses at pH 6 and 8. Flocculation followed by GAC fi ltration signifi cantly reduced the turbidity values from 1.5 NTU to about 0.35 NTU using TiCl4 and 0.40 using FeCl3. Silt density index (SDI15) was also decreased from 5.0 to 4.2 and 4.7, respectively. Removal of dissolved organic carbon (DOC), colour and UV absorbance after TiCl4 and FeCl3 flocculation followed by GAC fi ltration was found to be eff ective and similar. TiO2 produced from sludge showed very high photocatalytic activity under UV-irradiation. Acetaldehyde was completely removed after 45 min photocatalytic reaction en_US
dc.language en_US
dc.publisher Elsevier B.V. en_US
dc.relation.isbasedon en_US
dc.title Recovery of sludge produced from Ti-salt flocculation as pretreatment to seawater reverse osmosis en_US
dc.parent Desalination en_US
dc.journal.volume 247 en_US
dc.journal.number 1-3 en_US
dc.publocation Netherlands en_US
dc.identifier.startpage 53 en_US
dc.identifier.endpage 63 en_US FEIT.Faculty of Engineering & Information Technology en_US
dc.conference Verified OK en_US
dc.for 091500 en_US
dc.personcode 10671600 en_US
dc.personcode 103883 en_US
dc.personcode 995130 en_US
dc.personcode 900451 en_US
dc.personcode 0000050490 en_US
dc.personcode 0000021359 en_US
dc.personcode 0000018630 en_US
dc.percentage 100 en_US Interdisciplinary Engineering en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords Pretreatment; Flocculation; Filtration; Organic matter; Sludge recovery; Titanium dioxide (TiO2); Photocatalytic activity en_US

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