Removal of chelated heavy metals from soil washing effluent by a sulfate-reducing bacterium and its re-washing potential
文献类型：期刊论文
| 作者 | Han, Wei2,3; Gao, Yu3; Zhang, Guixiang3; Liu, Dandan3; Wu, Hao3; Fan, Lisha3; Guo, Xiaofang3; Ji, Hongbing2; Zhang, Fengsong1 |
| 刊名 | ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
 |
| 出版日期 | 2026-04-01 |
| 卷号 | 48期号:6页码:271 |
| 关键词 | Sulfate reducing bacteria Heavy metal complexes Soil washing effluent Re-washing |
| ISSN号 | 0269-4042 |
| DOI | 10.1007/s10653-026-03164-1 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | Soil washing can effectively remediate heavy metal-contaminated soils; however, the treatment of its effluent, which contains high concentrations of chelated heavy metals, remains challenging. This study employed a sulfate-reducing bacterium Shewanella sp. JN01 to remove chelated heavy metals from soil washing effluent and explored its re-washing potential. The results showed that Shewanella sp. JN01 achieved significantly higher removal efficiencies for chelated Cd, Pb, and Cu from the actual effluent (72.62%, 22.63%, and 80.12%, respectively) than in the optimized simulated system (46.42%, 17.14%, and 66.73%, respectively). This observation was attributed to that the total organic carbon, nitrogen content, and pH of the actual effluent promoted the bacterial strain activity to remove these chelated heavy metals. Additionally, the removal efficiencies of chelated Zn in both the simulated and actual systems were low (less than 5% and 1.2-8.5%, respectively). Nevertheless, the removal amounts of chelated Zn (1.2-6.3 mg) from the actual effluent are comparable to those of chelated Cd (3.7-4.1 mg) and Cu (4.8-5.3 mg) because its much higher concentration. Shewanella sp. JN01 was likely to remove chelated heavy metals by reducing sulfate to produce S2- ions, promoting metal sulfide precipitation. X-ray photoelectron spectroscopy analysis revealed that CuS dominantly enriched in the inner layer while ZnS segregated to the surface, indicating a heterogeneous distribution of precipitates. The removal efficiencies of heavy metals in soil by the treated effluents with acidification reached 45-85% of those by the fresh washing agent, demonstrating partial restoration of its washing capacity. These results will be beneficial for establishing effective strategies to remove chelated heavy metals from soil washing effluents and reuse the regenerated agents. |
| URL标识 | 查看原文 |
| WOS关键词 | DEGRADATION ; EDTA ; REMEDIATION ; CORROSION ; TOXICITY ; AGENTS ; ACID ; ZN ; CD ; CU |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001730369700001 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221497]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Zhang, Guixiang; Guo, Xiaofang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Sci & Technol Beijing, Sch Energy & Environm Engn, 30 Xueyuan Rd, Beijing 100083, Peoples R China; 3.Taiyuan Univ Sci & Technol, Sch Environm & Resources, Taiyuan 030024, Shanxi, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Han, Wei,Gao, Yu,Zhang, Guixiang,et al. Removal of chelated heavy metals from soil washing effluent by a sulfate-reducing bacterium and its re-washing potential[J]. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,2026,48(6):271. |
| APA | Han, Wei.,Gao, Yu.,Zhang, Guixiang.,Liu, Dandan.,Wu, Hao.,...&Zhang, Fengsong.(2026).Removal of chelated heavy metals from soil washing effluent by a sulfate-reducing bacterium and its re-washing potential.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,48(6),271. |
| MLA | Han, Wei,et al."Removal of chelated heavy metals from soil washing effluent by a sulfate-reducing bacterium and its re-washing potential".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 48.6(2026):271. |
入库方式： OAI收割
来源：地理科学与资源研究所
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