Please use this identifier to cite or link to this item:
https://doi.org/10.1016/j.watres.2008.07.010
DC Field | Value | |
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dc.title | Pentachlorophenol dechlorination by an acidogenic sludge | |
dc.contributor.author | Mun, C.H. | |
dc.contributor.author | He, J. | |
dc.contributor.author | Ng, W.J. | |
dc.date.accessioned | 2014-10-08T08:33:09Z | |
dc.date.available | 2014-10-08T08:33:09Z | |
dc.date.issued | 2008-08 | |
dc.identifier.citation | Mun, C.H., He, J., Ng, W.J. (2008-08). Pentachlorophenol dechlorination by an acidogenic sludge. Water Research 42 (14) : 3789-3798. ScholarBank@NUS Repository. https://doi.org/10.1016/j.watres.2008.07.010 | |
dc.identifier.issn | 00431354 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/87578 | |
dc.description.abstract | This study reports the feasibility of removing pentachlorophenol (PCP) by an acidogenic process in batch reactors. When the acidogenic sludge was first acclimated with 2,4,6-trichlorophenol (2,4,6-TCP) and developed 2,4,6-TCP dechlorinating activity, PCP could be ortho-dechlorinated to 3,4,5,-trichlorophenol (3,4,5-TCP) via 2,3,4,5-tetrachlorophenol as the intermediary. However, due to PCP's higher hydrophobicity and its higher expected Gibbs free energy yield, it was adsorbed to the sludge and dechlorinated preferentially to 2,4,6-TCP. This resulted in the inhibition of 2,4,6-TCP dechlorination. PCP removal under acidogenic condition was attributed to both reductive dechlorination and adsorption. At low PCP loads of 0.48 μmoles/g MLVSS.d, dechlorination was the dominant removal mechanism (69% of total removal), while at the higher PCP load of 9.3 μmoles/g MLVSS.d, adsorption was the main mechanism (82% of total removal). Attempts to induce meta or para position dechlorination of PCP failed when using meta position chlorophenols such as 2,3,6-TCP, 3,4,5-TCP and 3,5-DCP as the initial substrates. Overall, acidogenic biotreatment was an effective process in reducing PCP loads prior to downstream biological treatment. © 2008 Elsevier Ltd. All rights reserved. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.watres.2008.07.010 | |
dc.source | Scopus | |
dc.subject | Acidogenic | |
dc.subject | Adsorption | |
dc.subject | Dechlorination | |
dc.subject | Pentachlorophenol | |
dc.type | Article | |
dc.contributor.department | DIVISION OF ENVIRONMENTAL SCIENCE & ENGG | |
dc.description.doi | 10.1016/j.watres.2008.07.010 | |
dc.description.sourcetitle | Water Research | |
dc.description.volume | 42 | |
dc.description.issue | 14 | |
dc.description.page | 3789-3798 | |
dc.description.coden | WATRA | |
dc.identifier.isiut | 000259753000024 | |
Appears in Collections: | Staff Publications |
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