生物炭作为一种潜在的土壤重金属修复剂

Q2 Agricultural and Biological Sciences
Zhong-Huo Li, Fangfang Min, Haoming Chen
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引用次数: 0

摘要

生物炭是有机生物质在缺氧条件下热解产生的一种稳定的富碳固体,是目前最受关注的研究热点之一。生物炭具有丰富的孔隙结构、官能团、芳烃等特性,能够改善土壤理化性质,增加养分含量,调节土壤微生物群落结构。近年来,随着对生物炭研究的不断深入,生物炭在重金属污染修复中的作用得到了进一步的研究。生物炭的物理吸附、离子交换、静电吸引、络合反应、矿物沉淀、氧化还原等功能是修复重金属离子的主要因素。此外,固定化是生物炭修复农业土壤重金属的首要目标,因为它可以大大降低重金属进入食物链对人体健康造成的风险。本文综述了生物炭及其在农业重金属土壤中的作用。以中国农业土壤重金属污染现状为背景,探讨了生物炭修复土壤重金属污染的可能机制。为生物炭在中国农业土壤重金属污染修复中的开发和应用提供了科学依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Biochar as a potential soil remediation agent for heavy metals in agriculture
Biochar is one of the most concerned research hotspots at present, which is a stable and carbon-rich solid produced by pyrolysis of organic biomass under anoxic conditions. Biochar has abundant pore structure, functional groups, aromatic hydrocarbons and other characteristics, which enable it to improve soil physical and chemical properties, increase nutrient content, and regulate soil microbial community structure. In recent years, with the continuous research on biochar, the role of biochar in the remediation of heavy metal pollution has been further studied. The physical adsorption, ion exchange, electrostatic attraction, complexation reaction, mineral precipitation, redox and other functions of biochar are the main factors for repairing heavy metal ions. In addition, immobilization is the primary goal of biochar remediation of heavy metals in agricultural soils, because it can greatly reduce the risk of human health caused by heavy metals entering the food chain. This paper reviewed the current knowledge of biochar and its function in agricultural heavy metal soil. Based on the background of heavy metal pollution in agricultural soil in China, the possible remediation mechanism of biochar was discussed. It provides scientific basis for the development and application of biochar in the remediation of heavy metal pollution in agricultural soil in China.
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来源期刊
Applied Environmental Biotechnology
Applied Environmental Biotechnology Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
3.70
自引率
0.00%
发文量
2
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