Removal of methylmercury and its potential relationship to microbiota in sludge anaerobic digestion under thermal hydrolysis
文献类型：期刊论文
| 作者 | Liu, Jibao ; He, Xianglin; Zhong, Hui; Lei, Pei; Zhang, Junya; Xu, Yufeng; Wei, Yuansong
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| 刊名 | BIORESOURCE TECHNOLOGY
 |
| 出版日期 | 2022-03 |
| 卷号 | 347期号:0页码:126394 |
| 关键词 | MERCURY METHYLATION ENVIRONMENT COMMUNITY ENHANCE SEWAGE CHINA |
| ISSN号 | 0960-8524 |
| 英文摘要 | Reducing health risk of mercury (Hg)/methylmercury (MeHg) in sewage sludge is vital to its land application. This study revealed that thermal hydrolysis reduced MeHg content both during pretreatment process and subsequent anaerobic digestion (AD), which resulted in decrease of MeHg content from 4.24 ng/g to 0.95 ng/g after thermal hydrolysis (150 degrees C) and further decreased to 0.39 ng/g after AD. Notably, thermal hydrolysis at high temperature (120 degrees C and 150 degrees C) promoted both Hg methylation and MeHg demethylation rather than the control or at low temperature (100 degrees C). Hg methylation dominated in hydrolysis and acidogenesis stage, whereas MeHg demethylation dominated in methanogenesis stage. Though abundance of related genes (HgcA and merA) was dramatically reduced, Ruminococcaceae, Peptococcaceae, and Lachnospiraceae were potentially Hg methylators in hydrolysis and acidogenesis stage. Whereas, MeHg demethylation dominated in the late period of AD due to the improved syntrophic methanogenesis and possibly reduced Hg2+ biodegradability by precipitation. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47423]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 2.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resources Reuse, Nanjing 210046, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jibao,He, Xianglin,Zhong, Hui,et al. Removal of methylmercury and its potential relationship to microbiota in sludge anaerobic digestion under thermal hydrolysis[J]. BIORESOURCE TECHNOLOGY,2022,347(0):126394. |
| APA | Liu, Jibao.,He, Xianglin.,Zhong, Hui.,Lei, Pei.,Zhang, Junya.,...&Wei, Yuansong.(2022).Removal of methylmercury and its potential relationship to microbiota in sludge anaerobic digestion under thermal hydrolysis.BIORESOURCE TECHNOLOGY,347(0),126394. |
| MLA | Liu, Jibao,et al."Removal of methylmercury and its potential relationship to microbiota in sludge anaerobic digestion under thermal hydrolysis".BIORESOURCE TECHNOLOGY 347.0(2022):126394. |
入库方式： OAI收割
来源：生态环境研究中心
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