Organic acid leaching combined with manganese-sulfur biochar enhances soil eco-environmental health by reducing metal toxicity and modulating the microbial community
文献类型：期刊论文
| 作者 | Wu, Weilong5; Zhang, Zhibo5; Wu, Xuan5; Wang, Lusi5; Guo, Zhiqiang5; Liu, Xiaohong4; Zhang, Han5; Li, You1; Tang, Daniel Kuok Ho2,3; Li, Ronghua3,5 |
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2025-09-01 |
| 卷号 | 391页码:126519 |
| 关键词 | Ecological restoration Leaching Stabilization Biomass Microbial response |
| ISSN号 | 0301-4797 |
| DOI | 10.1016/j.jenvman.2025.126519 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Mercury (Hg) and lead (Pb) contamination poses a significant threat to global soil health, with conventional leaching techniques often compromising soil physicochemical properties during remediation. This study developed an integrated leaching-stabilization (LS) approach combining organic acid leaching with manganese/sulfurmodified biochar (SAMB) stabilization to simultaneously remove heavy metals and restore soil ecological functions. Using citric acid (CA) and polyepoxysuccinic acid (PESA) as leaching agents, we achieved removal rates of 13.1 % for Hg and 53.0 % for Pb with CA, and 41.8 % for Hg and 48.6 % for Pb with PESA under optimized conditions. Subsequent stabilization with agricultural waste-derived SAMB significantly reduced metal bioavailability, decreasing DTPA-extractable Hg and Pb by 50.2 % and 63.8 % in CA-treated soils, and 63.8 % and 67.4 % in PESA-treated soils, respectively, through transformation into stable residual fractions. The LS system demonstrated multiple synergistic effects: SAMB enhanced degradation of residual organic acids while improving soil health through increased carbon metabolism and selective enrichment of beneficial microbial taxa, including metal-resistant Lysobacter and nutrient-cycling Allorhizobium. Practical validation showed the method supported normal spinach growth while reducing plant metal accumulation by 42-68 %, confirming its dual functionality in metal detoxification and ecological restoration. These results establish the LS approach as an effective strategy for sustainable remediation of Hg/Pb-contaminated soils, combining efficient metal removal with comprehensive soil function recovery. |
| URL标识 | 查看原文 |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001535222200009 |
| 出版者 | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215362]  |
| 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 | Li, You; Li, Ronghua |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing Key Lab Environm Damage Assessment & Remed, Beijing 100101, Peoples R China; 2.Univ Arizona UA, Dept Environm Sci, Tucson, AZ 85721 USA; 3.NWAFU UA Microcampus, Sch Nat Resources & Environm, Yangling 712100, Peoples R China; 4.Yanan Univ, Sch Chem & Chem Engn, Yanan 716000, Peoples R China 5.Northwest A&F Univ NWAFU, Sch Nat Resources & Environm, Yangling 712100, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wu, Weilong,Zhang, Zhibo,Wu, Xuan,et al. Organic acid leaching combined with manganese-sulfur biochar enhances soil eco-environmental health by reducing metal toxicity and modulating the microbial community[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2025,391:126519. |
| APA | Wu, Weilong.,Zhang, Zhibo.,Wu, Xuan.,Wang, Lusi.,Guo, Zhiqiang.,...&Li, Ronghua.(2025).Organic acid leaching combined with manganese-sulfur biochar enhances soil eco-environmental health by reducing metal toxicity and modulating the microbial community.JOURNAL OF ENVIRONMENTAL MANAGEMENT,391,126519. |
| MLA | Wu, Weilong,et al."Organic acid leaching combined with manganese-sulfur biochar enhances soil eco-environmental health by reducing metal toxicity and modulating the microbial community".JOURNAL OF ENVIRONMENTAL MANAGEMENT 391(2025):126519. |
入库方式： OAI收割
来源：地理科学与资源研究所
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