Biochar performance for preventing cadmium and arsenic accumulation, and the health risks associated with mustard (Brassica juncea) grown in co-contaminated soils
文献类型： 外文期刊
作者： Zang, Yili 1 ; Wang, Min 1 ; Shohag, M. J. I. 3 ; Lu, Lingli 2 ; He, Tieguang 4 ; Liao, Changjun 5 ; Zhang, Zengyu 1 ; Chen, Jiancheng 1 ; You, Xiaoshuang 1 ; Zhao, Yihan 1 ; Wei, Yanyan 1 ; Tian, Shengke 2 ;
作者机构： 1.Guangxi Univ, Coll Agr, State Key Lab Conservat & Utilizat Subtrop Agribio, Guangxi Key Lab Agroenvironm & Agroprod Safety, Nanning 530004, Peoples R China
2.Zhejiang Univ, Coll Environm & Resource Sci, MOE Key Lab Environm Remediat & Ecol Hlth, Zhejiang Prov Key Lab Subtrop Soil & Plant Nutr, Hangzhou 310058, Peoples R China
3.Bangabandhu Sheikh Mujibur Rahman Sci & Technol Un, Dept Agr, Gopalganj 8100, Bangladesh
4.Guangxi Acad Agr Sci, Agr Resources & Environm Res Inst, Guangxi Key Lab Arable Land Conservat, Nanning 530007, Guangxi, Peoples R China
5.Guangxi Bossco Enviromental Protect Technol Co Ltd, Nanning 53007, Peoples R China
6.Guangxi Univ, Coll Agr, Nanning 530004, Peoples R China
关键词： Cadmium; Arsenic; Biochar feedstocks; Long-term immobilization; Microbial communities
期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.8； 五年影响因子：6.9 ）
ISSN： 0147-6513
年卷期： 2023 年 263 卷
页码：
收录情况： SCI
摘要： Cadmium (Cd) and arsenic (As) in co-contaminated soil can enter the human body harming health via the food chain, such as vegetables. Biochar derived from waste has been used to reduce heavy metal uptake by plant, but long-term effects of biochar under Cd and As co-contaminated soil needs to be investigated. A following mustard (Brassica juncea) was grown on co-contaminated soil amended with different raw materials of biochar including biochars pyrolyzed by lignite coal (LCB), rice straw (RSB), silkworm excrement (SEB), and sugar refinery sludge (SSB). The results showed that compared to the control, Cd and As contents of mustard shoot in SSB treatment decreased by 45-49% and 19-37% in two growing seasons, respectively, which was the most effective among 4 biochars. This probably due to SSB owns more abundant Fe-O functional groups. Biochar also altered the microbial community composition, specifically SSB increased proteobacteria abundance by 50% and 80% in the first and second growing seasons, thereby promoted the simultaneous immobilization of Cd and As in soils which may reduce the potential risks to humans. In summary, considering the long-term effects and security of SSB application on mustard, not only is it an effective waste recycle option, but it should also be promoted as a promising approach for safe vegetable production in Cd and As co-contaminated soils.
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