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

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dc.contributor.author Na, SH
dc.contributor.author Shon, HK
dc.contributor.author Kim, JB
dc.contributor.author Park, HJ
dc.contributor.author Cho, DL
dc.contributor.author Saliby, IE
dc.contributor.author Kim, J-H
dc.date.accessioned 2011-02-07T06:22:40Z
dc.date.issued 2010-01-25
dc.identifier.citation Journal of Industrial and Engineering Chemistry, 2010, 16 (1), pp. 96 - 100
dc.identifier.issn 1226-086X
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 °C) and pH 11 (60 8 °C), respectively. Flocculation was carried out using a Ti-salt flocculant and the collected sludge was dewatered and incinerated at 600 °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 l-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. © 2010 The Korean Society of Industrial and Engineering Chemistry.
dc.language eng
dc.relation.isbasedon 10.1016/j.jiec.2010.01.013
dc.title Recycling of excess sludge using titanium tetrachloride (TiCl4) as a flocculant aid with alkaline-thermal hydrolysis
dc.type Journal Article
dc.parent Journal of Industrial and Engineering Chemistry
dc.journal.volume 1
dc.journal.volume 16
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 0904 Chemical Engineering
dc.personcode 995130
dc.personcode 103883
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
dc.description.keywords Activated sludge
dc.description.keywords Aerobic digestion
dc.description.keywords Alkaline-thermal hydrolysis
dc.description.keywords Metabolic engineering
dc.description.keywords Titanium dioxide
dc.description.keywords Waste treatment
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group /University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group /University of Technology Sydney/Strength - Technology in Wastewater Treatment
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10


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