Recycling of excess sludge using titanium tetrachloride (TiCl4) as a flocculant aid with alkaline-thermal hydrolysis

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dc.contributor.author Na, S en_US
dc.contributor.author Shon, Hokyong en_US
dc.contributor.author Kim, J en_US
dc.contributor.author Park, H en_US
dc.contributor.author Cho, D en_US
dc.contributor.author El Saliby, Ibrahim en_US
dc.contributor.editor en_US
dc.date.accessioned 2011-02-07T06:22:40Z
dc.date.available 2011-02-07T06:22:40Z
dc.date.issued 2010 en_US
dc.identifier 2009002763 en_US
dc.identifier.citation Na S et al. 2010, 'Recycling of excess sludge using titanium tetrachloride (TiCl4) as a flocculant aid with alkaline-thermal hydrolysis', Elsevier BV, vol. 16, no. 1, pp. 96-100. en_US
dc.identifier.issn 1226-086X en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/13545
dc.description.abstract The highly strengthened treatment and disposal of excess sludge based on economic and environmental regulation factors is one of the important issues to be dealt with in the activated sludge process. In this study, the reduction and recycling technology of excess sludge were investigated for the aim of achieving a zero emission of excess sludge produced from the activated sludge process using titanium tetrachloride (TiCl4) as a flocculant aid with alkaline-thermal hydrolysis. Alkaline-thermal hydrolysis of excess sludge was obtained 73% and 40% reduction rate at pH 13 (60 8 A?C) and pH 11 (60 8 A?C), respectively. Flocculation was carried out using a Ti-salt flocculant and the collected sludge was dewatered and incinerated at 600 A?C to produce TiO2 nanoparticles. The amount of total suspended solids and volatile suspended solids was significantly decreased with pH increase. The optimal dose of Ti-salt flocculation aid to improve dewatering ability of sludge breakage was 23.95 Ti-mg la??1. Also, in the batch culture, the supernatant after flocculation and the organic matter released from the lysed sludge were found to be useful as a source of energy for the growth of microorganisms during the aerobic operations period. TiO2 produced from Ti-salt flocculation of excess sludge (TES) was characterized by X-ray diffraction, scanning electron microscopy/energy dispersive X-ray and photocatalytic activity. en_US
dc.language en_US
dc.publisher Elsevier BV en_US
dc.relation.isbasedon http://dx.doi.org/10.1016/j.jiec.2010.01.013 en_US
dc.title Recycling of excess sludge using titanium tetrachloride (TiCl4) as a flocculant aid with alkaline-thermal hydrolysis en_US
dc.parent Journal of Industrial and Engineering Chemistry en_US
dc.journal.volume 16 en_US
dc.journal.number 1 en_US
dc.publocation Netherlands en_US
dc.identifier.startpage 96 en_US
dc.identifier.endpage 100 en_US
dc.cauo.name FEIT.School of Civil and Environmental Engineering en_US
dc.conference Verified OK en_US
dc.for 090400 en_US
dc.personcode 0000050488 en_US
dc.personcode 995130 en_US
dc.personcode 0000050489 en_US
dc.personcode 0000050507 en_US
dc.personcode 0000050483 en_US
dc.personcode 103883 en_US
dc.personcode 0000050490 en_US
dc.percentage 100 en_US
dc.classification.name Chemical Engineering en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Activated sludge; Waste treatment; Metabolic engineering; Alkaline-thermal hydrolysis; Aerobic digestion; Titanium dioxide en_US


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