PMID- 21565491 OWN - NLM STAT- MEDLINE DCOM- 20110923 LR - 20121115 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 102 IP - 13 DP - 2011 Jul TI - Degradation pathway, toxicity and kinetics of 2,4,6-trichlorophenol with different co-substrate by aerobic granules in SBR. PG - 7016-21 LID - 10.1016/j.biortech.2011.04.057 [doi] AB - The present study deals with cultivation of 2,4,6-trichlorophenol (TCP) degrading aerobic granules in two SBR systems based on glucose and acetate as co-substrate. Biodegradation of TCP containing wastewater starting from 10 to 360 mg L(-1) with more than 90% efficiency was achieved. Sludge volume index decreases as the operation proceeds to stabilize at 35 and 30 mL g(-1) while MLVSS increases from 4 to 6.5 and 6.2 g L(-1) for R1 (with glucose as co-substrate) and R2 (with sodium acetate as co-substrate), respectively. FTIR, GC and GC/MS spectral studies shows that the biodegradation occurred via chlorocatechol pathway and the cleavage may be at ortho-position. Haldane model for inhibitory substrate was applied to the system and it was observed that glucose fed granules have a high specific degradation rate and efficiency than acetate fed granules. Genotoxicity studies shows that effluent coming from SBRs was non-toxic. CI - Copyright (c) 2011 Elsevier Ltd. All rights reserved. FAU - Khan, Mohammad Zain AU - Khan MZ AD - Environmental Research Laboratory, Department of Chemistry, Aligarh Muslim University, Faculty of Science, Aligarh 202 002, UP, India. FAU - Mondal, Pijush Kanti AU - Mondal PK FAU - Sabir, Suhail AU - Sabir S FAU - Tare, Vinod AU - Tare V LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110423 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Chlorophenols) RN - 0 (Sewage) RN - MHS8C5BAUZ (2,4,6-trichlorophenol) SB - IM MH - Aerobiosis/drug effects MH - Biodegradation, Environmental/drug effects MH - Biological Oxygen Demand Analysis MH - Bioreactors/*microbiology MH - Chlorophenols/*isolation & purification/*toxicity MH - Gas Chromatography-Mass Spectrometry MH - Kinetics MH - Mutagenicity Tests MH - Plasmids/metabolism MH - Sewage/*microbiology MH - Spectrophotometry, Ultraviolet MH - Spectroscopy, Fourier Transform Infrared MH - Volatilization/drug effects EDAT- 2011/05/14 06:00 MHDA- 2011/09/29 06:00 CRDT- 2011/05/14 06:00 PHST- 2011/02/03 00:00 [received] PHST- 2011/04/18 00:00 [revised] PHST- 2011/04/19 00:00 [accepted] PHST- 2011/05/14 06:00 [entrez] PHST- 2011/05/14 06:00 [pubmed] PHST- 2011/09/29 06:00 [medline] AID - S0960-8524(11)00571-2 [pii] AID - 10.1016/j.biortech.2011.04.057 [doi] PST - ppublish SO - Bioresour Technol. 2011 Jul;102(13):7016-21. doi: 10.1016/j.biortech.2011.04.057. Epub 2011 Apr 23.