Cometabolic Vinyl Chloride Degradation at Acidic pH Catalyzed by Acidophilic Methanotrophs Isolated from Alpine Peat Bogs
Cometabolic Vinyl Chloride Degradation at Acidic pH Catalyzed by Acidophilic Methanotrophs Isolated from Alpine Peat Bogs
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DOI：
10.1021/acs.est.0c08766
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发表时间：
2021-04-12
影响因子：
11.4
通讯作者：
Yoon, Sukhwan
中科院分区：
文献类型：
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作者：
Choi, Munjeong;Yun, Taeho;Yoon, Sukhwan
通过微生物还原脱氯对有毒氯化乙烯的修复可导致乙烯的生成；然而，这一过程在酸性地下水中停滞不前，导致致癌物质氯乙烯（VC）的积累。本研究探讨了中度嗜酸甲烷氧化菌降解代谢VC的可行性。从韩国不同的高山泥炭沼泽中分离到两株新分离株甲基单胞菌（Methylomonas sp.）菌株JS1和甲基胞菌（Methylocystis sp.）菌株MJC1。两种菌株在pH等于或低于5.5的氧化条件下以CH4为主要底物共同代谢VC。在无菌培养中，VC共代谢发生在存在（10 μ M）或不存在(
Remediation of toxic chlorinated ethenes via microbial reductive dechlorination can lead to ethene formation; however, the process stalls in acidic groundwater, leading to the accumulation of carcinogenic vinyl chloride (VC). This study explored the feasibility of cometabolic VC degradation by moderately acidophilic methanotrophs. Two novel isolates, Methylomonas sp. strain JS1 and Methylocystis sp. strain MJC1, were obtained from distinct alpine peat bogs located in South Korea. Both isolates cometabolized VC with CH4 as the primary substrate under oxic conditions at pH at or below 5.5. VC cometabolism in axenic cultures occurred in the presence (10 mu M) or absence (