Fate of mercury and methylmercury in full-scale sludge anaerobic digestion combined with thermal hydrolysis
文献类型：期刊论文
| 作者 | Liu, Jibao; He, Xianglin; Xu, Yufeng; Zuo, Zhuang; Lei, Pei; Zhang, Junya ; Yin, Yongguang; Wei, Yuansong
|
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2021-03-15 |
| 卷号 | 406页码:- |
| 关键词 | Methylmercury Sewage sludge Anaerobic digestion Thermal hydrolysis Methylation |
| ISSN号 | 0304-3894 |
| 英文摘要 | Methylmercury (MeHg) is one of the highly toxic and bio-accumulated forms of mercury. Its presence in wastewater treatment processes has been evidenced in recent studies. Considering its enrichment in sewage sludge and the ecological risk associated with its land application, this study investigated the fate of mercury and MeHg in full-scale anaerobic digestion combined with Cambi thermal hydrolysis based on one-year sampling. Results showed that the advanced anaerobic digestion could increase the total mercury (THg) content from 4.35 +/- 0.43 mg/kg in raw sludge to 6.37 +/- 1.05 mg/kg in digested sludge, and the MeHg content decreased from 1.61 to 8.94 ng/g in raw sludge to 0.21-2.03 ng/g after anaerobic digestion. The demethylation of MeHg was dominant in both thermal hydrolysis and anaerobic digestion; it was mostly derived from the physico-chemical impacts such as chemical decomposition in thermal hydrolysis and precipitation in anaerobic digestion. Although the reported microbial methylators, such as Methanosarcina and Clostridia, were dominant in anaerobic digestion, the relative abundances of hgcA and merA were relatively low and did not correlate with the MeHg profiles. Thus, microbial methylation or demethylation seems negligible in terms of MeHg transformation. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46044]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Beijing Drainage Grp CO LTD, Beijing 100192, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 4.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resources Reuse, Nanjing 210046, Peoples R China 5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jibao,He, Xianglin,Xu, Yufeng,et al. Fate of mercury and methylmercury in full-scale sludge anaerobic digestion combined with thermal hydrolysis[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,406:-. |
| APA | Liu, Jibao.,He, Xianglin.,Xu, Yufeng.,Zuo, Zhuang.,Lei, Pei.,...&Wei, Yuansong.(2021).Fate of mercury and methylmercury in full-scale sludge anaerobic digestion combined with thermal hydrolysis.JOURNAL OF HAZARDOUS MATERIALS,406,-. |
| MLA | Liu, Jibao,et al."Fate of mercury and methylmercury in full-scale sludge anaerobic digestion combined with thermal hydrolysis".JOURNAL OF HAZARDOUS MATERIALS 406(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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