title: [Characteristics and mechanism of 2,4,6-TCP degradation by the "Fe0/enriched-bacteria" system].
abstract: The synergistic mechanism of 2, 4, 6-trichlorophenol (TCP) degradation using a combination of Fe0 and anaerobic dechlorinating bacteria with batch processing was investigated. Experimental results showed that under the conditions of pH 7.0, Fe0 5 g x L(-1) and 2,4,6-TCP 30 mg x L(-1), the growth and interface enrichment of enriched-bacteria could be promoted by Fe0, the cell mass (expressed by D600) of Fe0/enriched-bacteria was about 1.7 times as high as that of the individual predominant groups of dechlorinating bacteria. After 96 h reaction, large amount of bacteria attached to the iron surface, with short rod or coccus-like morphology. The pH value of the system was maintained at 7.8, which could be beneficial to the reductive dechlorination reaction and the growth of the enriched-bacteria. The major pathway of 2,4,6-TCP degradation in the Fe0/enriched-bacteria system was 2,4,6-TCP to 2,4-DCP and then to 4-CP.
authors.affiliation: Hunan Province Key Laboratory of Heavy Metal Pollution Control, Department of Environmental Science and Engineering, Xiangtan University, Xiangtan 411105, China. daiyouzhi202@163.com
authors.forename: You-zhi
authors.initials: YZ
authors.lastname: Dai
authors.forename: Li-li
authors.initials: LL
authors.lastname: Guo
authors.forename: Lei
authors.initials: L
authors.lastname: Shi
authors.forename: Zhi-yong
authors.initials: ZY
authors.lastname: Liu
authors.forename: Bao-chai
authors.initials: BC
authors.lastname: Gao
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002733:Chlorophenols / Q000302:isolation & purification* / Q000378:metabolism*; D007220:Industrial Waste; D007221:Industry; D007501:Iron / Q000737:chemistry*; D010209:Paper; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry
chemical_list: D002733:Chlorophenols; D007220:Industrial Waste; D007501:Iron; D062065:Wastewater; C024564:2,4,6-trichlorophenol