农业环境科学学报2011，Vol.30Issue(11)：2225-2231,7.
纳米Fe0与微生物协同降解土壤中PCB77
Synergistic Degradation of 3,3′,4,4′-Tetrachlorobiphenyl by Nano Fe0 and Microorganism
摘要
Abstract
The degradation of 3,3',4,4'-tetrachlorobiphenyl(PCB77) in soils by nano Fe°and microorganism was studied. The natural degradation rate of PCB77 was very low in soils, and the degradation of PCB77 could be improved by nano Fe°, microorganism and the nano Fe° and microorganism integrated treatment system, which followed the pseudo first-order reaction kinetics. When the initial concentration of PCB77 in soil was 4mg·kg-1, and the dosage of nano Fe° was 20 mg·g-1, the reaction rate constants(k) were 0.020 5 d-1, 0.016 5 d-1 and 0.014 5 d"1 in red soil, yellow cinnamon soil and shajiang black soil, respectively. When the microbial inoculation amount was 2xl08 cfu·g-1, the reaction rate constants(k ) were 0.013 6 d-1, 0.009 4 d-1 and 0.012 4 d-1. In the nano Fe° and microorganism integrated treatment system, the reaction rate constants(k) were 0.026 4 d-1, 0.021 8 d-1 and 0.023 2 d-1. As a result, a combination of nano Fe° and microorganism could accelerate the degradation of PCB77 compared to the individual use. It suggested that there were significant synergistic effects between nano Fe° and microorganism for the degradation of PCB77.关键词
3,3′,4,4′-四氯联苯/纳米Fe0/微生物/协同降解Key words
3,3',4,4'-tetrachlorobiphenyl/ nano Fe°/ microorganism/ synergistic degradation分类
资源环境引用本文复制引用
司友斌,邹影,陈涛,司雄元,王寅..纳米Fe0与微生物协同降解土壤中PCB77[J].农业环境科学学报,2011,30(11):2225-2231,7.基金项目
国家973计划(2007CB936604) （2007CB936604）
国家自然科学基金(40971182,41171254) （40971182,41171254）
