Sustainable Abiotic-Biotic Dechlorination of Perchloroethene with Sulfidated Nanoscale Zero-Valent Iron as Electron Donor Source
文献类型：期刊论文
| 作者 | Wu, Junhong1,2,4; Zhong, Yin1,2,5; Deng, Yirong7; Yang, Sen1,2,4; Wang, Heli1,2,7; Yang, Qian1,2,4; Li, Dan6; Song, Jianzhong1,2,5 ; Zhang, Huanheng3; Peng, Ping'an1,2,5
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2024-10-29 |
| 卷号 | 58期号:47页码:20931-20941 |
| 关键词 | reductive dechlorination
sulfidated zero-valent iron
electron donor-limited aquifers
|
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.3c10948 |
| 英文摘要 | Combining organohalide-respiring bacteria with nanoscale zero-valent iron (nZVI) represents a promising approach for remediating chloroethene-contaminated aquifers. However, limited information is available regarding their synergistic dechlorinating ability for chloroethenes when nZVI is sulfidated (S-nZVI) under the organic electron donor-limited conditions typically found in deep aquifers. Herein, we developed a combined system utilizing a mixed culture containing Dehalococcoides (Dhc) and S-nZVI particles, which achieved sustainable dechlorination with repeated rounds of spiking with 110 mu M perchloroethene (PCE). The relative abundance of Dhc considerably increased from 5.2 to 91.5% after five rounds of spiking with PCE, as evidenced by 16S rRNA gene amplicon sequencing. S-nZVI corrosion generated hydrogen as an electron donor for Dhc and other volatile fatty acid (VFA)-producing bacteria. Electron balance analysis indicated that 68.1% of electrons from Fe0 consumed in S-nZVI were involved in dechlorination, and 6.2, 1.1, and 3.2% were stored in formate, acetate, and other VFAs, respectively. The produced acetate possibly served as a carbon source for Dhc. Metagenomic analysis revealed that Desulfovibrio, Syntrophomonas, Clostridium, and Mesotoga were likely involved in VFA production. These findings provide valuable insights into the synergistic mechanisms of biotic and abiotic dechlorination, with important implications for sustainable remediation of electron donor-limited aquifers contaminated by chloroethenes. |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001348610500001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/82094]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Zhong, Yin |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Maco Joint Lab Environm Pollut, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 3.Guangzhou Environm Protect Investment Grp Co Ltd, Guangzhou 510016, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Guangdong Prov Key Lab Environm Protect & Resource, Guangzhou 510640, Peoples R China 6.Dongguan Univ Technol, Sch Environm & Civil Engn, Dongguan 523808, Peoples R China 7.Guangdong Prov Acad Environm Sci, China Guangdong Key Lab Contaminated Sites Environ, Guangzhou 510045, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Junhong,Zhong, Yin,Deng, Yirong,et al. Sustainable Abiotic-Biotic Dechlorination of Perchloroethene with Sulfidated Nanoscale Zero-Valent Iron as Electron Donor Source[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2024,58(47):20931-20941. |
| APA | Wu, Junhong.,Zhong, Yin.,Deng, Yirong.,Yang, Sen.,Wang, Heli.,...&Peng, Ping'an.(2024).Sustainable Abiotic-Biotic Dechlorination of Perchloroethene with Sulfidated Nanoscale Zero-Valent Iron as Electron Donor Source.ENVIRONMENTAL SCIENCE & TECHNOLOGY,58(47),20931-20941. |
| MLA | Wu, Junhong,et al."Sustainable Abiotic-Biotic Dechlorination of Perchloroethene with Sulfidated Nanoscale Zero-Valent Iron as Electron Donor Source".ENVIRONMENTAL SCIENCE & TECHNOLOGY 58.47(2024):20931-20941. |
入库方式： OAI收割
来源：广州地球化学研究所
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