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https://hdl.handle.net/2440/61888
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dc.contributor.author | Chong, M. | - |
dc.contributor.author | Jin, B. | - |
dc.contributor.author | Zhu, H. | - |
dc.contributor.author | Saint, C. | - |
dc.date.issued | 2010 | - |
dc.identifier.citation | Journal of Photochemistry and Photobiology A: Chemistry, 2010; 214(1):1-9 | - |
dc.identifier.issn | 1010-6030 | - |
dc.identifier.uri | http://hdl.handle.net/2440/61888 | - |
dc.description.abstract | This work studied the inactivation kinetics, bacterial regrowth and synergistic competition in the photocatalytic disinfection of a sewage isolated Escherichia coli (ATCC 11775) in an annular slurry photoreactor (ASP) system using anatase titanate nanofibers catalyst (TNC). The inactivation performance and disinfection kinetics of the TNC-ASP system were investigated with respect to operation conditions: TNC loading, pH, aeration rate and inoculums size. At the optimum conditions, a 99.999% inactivation of 7 × 106 CFU mL-1 E. coli was achieved in 60 min. The modified Hom model was used to perfectly-fit the sigmoid-shaped disinfection kinetic profile. The residual disinfecting effect was evaluated by post-irradiation Fenton reaction. It was found that the 1.0 mg L-1 Fe2+ in conjunction with low chemical oxygen demand (COD) was able to initiate the post-photocatalytic Fenton reaction, where substantial bacterial regrowth was suppressed after 24 h treatment. Studies on the synergistic effect of COD concentration on the inactivation and the bacterial regrowth potential revealed that the E. coli could regrowth at a COD concentration over 16 mg L-1. Thus, significant removal of COD has to be ensured in a photocatalytic disinfection process to successfully maintain the biostability of the treated water. © 2010 Elsevier B.V. | - |
dc.description.statementofresponsibility | Meng Nan Chong, Bo Jin, Huaiyong Zhu, Chris Saint | - |
dc.language.iso | en | - |
dc.publisher | Elsevier Science Sa | - |
dc.rights | Copyright © 2010 Elsevier B.V. All rights reserved. | - |
dc.source.uri | http://dx.doi.org/10.1016/j.jphotochem.2010.05.018 | - |
dc.subject | TiO₂ | - |
dc.subject | Nanofibers | - |
dc.subject | Annular reactor | - |
dc.subject | Photocatalysis | - |
dc.subject | Bacterial inactivation | - |
dc.subject | E. coli | - |
dc.subject | Post-disinfection | - |
dc.subject | Fenton reaction | - |
dc.subject | Synergistic competition | - |
dc.title | Bacterial inactivation kinetics, regrowth and synergistic competition in a photocatalytic disinfection system using anatase titanate nanofiber catalyst | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1016/j.jphotochem.2010.05.018 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/LP0562153 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/LP0562153 | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest Chemical Engineering publications Environment Institute publications |
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