PMID- 10227195 OWN - NLM STAT- MEDLINE DCOM- 19990601 LR - 20121115 IS - 0360-1234 (Print) IS - 0360-1234 (Linking) VI - 34 IP - 3 DP - 1999 May TI - Microbial dechlorination of 2,4,6-trichlorophenol in anaerobic sewage sludge. PG - 491-507 AB - The dechlorination of 2,4,6-trichlorophenol (TCP) in municipal sewage sludge with a chlorophenol (CP)-adapted consortium was investigated. Results show that dechlorination rates differed according to the source of the sludge samples used in the batch experiments. No significant differences in 2,4,6-TCP dechlorination were observed following treatment with inoculum at densities ranging from 10% to 50% (V/V), but a significant delay was noted at 5% (V/V) density. Overall, results show that the higher the 2,4,6-TCP concentration, the slower the dechlorination rate. The addition of acetate, lactate, pyruvate, vitamin B12 or manganese dioxide did not results in a significant change in 2,4,6-TCP dechlorination. Data collected from a bioreactor experiment revealed that pH 7.0 and a total solid concentration of 10 g/L were optimal for dechlorination. Dechlorination rates decreased significantly at higher agitation speeds. 2,4,6-TCP dechlorination was enhanced under methanogenic conditions, but it was inhibited under denitrifying and sulfate-reducing conditions. FAU - Chang, B V AU - Chang BV AD - Department of Microbiology, Soochow University, Taipei, Taiwan, ROC. FAU - Chiang, C W AU - Chiang CW FAU - Yuan, S Y AU - Yuan SY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Environ Sci Health B JT - Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes JID - 7607167 RN - 0 (Chlorine Compounds) RN - 0 (Chlorophenols) RN - 0 (Sewage) RN - 0 (Water Pollutants, Chemical) RN - MHS8C5BAUZ (2,4,6-trichlorophenol) SB - IM MH - Anaerobiosis MH - Bioreactors MH - Chlorine Compounds/*chemistry MH - Chlorophenols/*chemistry MH - *Sewage MH - *Water Microbiology MH - Water Pollutants, Chemical/*analysis EDAT- 1999/05/05 00:00 MHDA- 1999/05/05 00:01 CRDT- 1999/05/05 00:00 PHST- 1999/05/05 00:00 [pubmed] PHST- 1999/05/05 00:01 [medline] PHST- 1999/05/05 00:00 [entrez] AID - 10.1080/03601239909373210 [doi] PST - ppublish SO - J Environ Sci Health B. 1999 May;34(3):491-507. doi: 10.1080/03601239909373210.