产甲烷
五氯苯酚
环境化学
生物强化
化学
环境修复
降级(电信)
甲烷八叠球菌
生物量(生态学)
微生物种群生物学
甲烷杆菌
生物修复
古细菌
细菌
甲烷
生物
生态学
生物化学
污染
有机化学
计算机科学
基因
电信
遗传学
作者
Min Zhu,Xi Feng,Gaoyang Qiu,Jiayin Feng,Lujun Zhang,Phillip C. Brookes,Jianming Xu,Yan He
标识
DOI:10.1016/j.jhazmat.2019.04.040
摘要
Methanogenesis is commonly mass-produced under anaerobic conditions and serves as a major terminal electron accepting process driving the degradation of organic biomass. In this study, a cofactor of methanogenesis (coenzyme M, CoM) and a classic methanogensis inhibitor (2-bromoethanesulfonate, BES) were added at different concentrations to investigate how methanogenesis would affect PCP degradation in flooded soil. Strikingly, the processes of methanogenesis and PCP degradation were simultaneously promoted with CoM, or inhibited with BES, significantly (p < 0.05). High-throughput sequencing for soil bacterial and archaeal community structures revealed that members of Desulfitobacterium, Dethiobacter, Sedimentibacter, Bacillus and Methanosarcina might act as the core functional groups jointly perform PCP degradation in flooded soil, possibly through assisting microbial mediated dechlorination in direct organohalide-respiration, and/or indirect co-metabolization in complex anaerobic soil conditions. This study implied an underlying synergistic coupling between methanogenesis and dechlorination, and provided insights into a novel consideration with respect to coordinating methanogenesis while promoting anaerobic degradation of PCP for complex polluted soil environment, which is necessary for the improved all-win remediation.
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