文献类型：期刊文献

英文题名：Aerobic debromination of BDE-209 by Rhodococcus sp coupled with zerovalent iron/activated carbon

作者：Liu, Lili[1];Zhang, Yacong[1];Liu, Ruihong[1];Wang, Zhiping[2];Xu, Feng[1];Chen, Yilun[1];Lin, Kuangfei[1]

机构：[1]E China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China

年份：2016

卷号：23

期号：4

起止页码：3925

外文期刊名：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

收录：;EI(收录号：20242616502873);WOS:【SCI-EXPANDED(收录号:WOS:000369342400089)】；

基金：This work was supported by the National Natural Science Foundation of China (41001316, 51108262), the Fundamental Research Funds for the Central Universities (WB1214059), and the China Postdoctoral Science Foundation (2014 M551415).

语种：英文

外文关键词：BDE-209; Rhodococcus sp.; Zerovalent iron/activated carbon; Debromination

摘要：In this study, an aerobic strain identified as Rhodococcus sp. was isolated from the sediment of a typical electronic waste disassemble site, Taizhou, China. This strain could use BDE-209 as the sole carbon and energy source and degrade 65.1 % of BDE-209 (initial concentration being 50 mg/L) within 144 h. To explore the BDE-209 degradation properties of this strain with the co-existed electronic donor, zerovalent iron/activated carbon (ZVI/AC) was introduced to build a microbial-chemical coupling system, which was found to promote the degradation of BDE-209 slightly (74.7 % in 144 h). Moreover, the debromination products in both of the batch experiments were determined with GC/MS, which showed that lower brominated PBDE congeners were produced almost in order of the number of bromine ions, ranged from nona- to di-BDEs. In addition, the possible debromination pathways of BDE-209 for each system were proposed respectively, which confirmed the microbial activity of BDE-209 debromination. Since some of the lower-brominated BDE congeners are much toxic than BDE-209, these microbial activities might bring potential hazards to the environment with BDE-209 contamination. It is the first time to investigate the transformation of BDE-209 with microbial-chemical coupling system, which is universal in the nature, thus suggesting that the ecological safety of environment exposed to PBDEs should be focused in the future.