A Comprehensive Review of the Application and Potential of Straw Biochar in the Remediation of Heavy Metal-Contaminated Soil

被引：0
作者：
Xu, Lei [1 ]
Zhao, Feifei [1 ]
Peng, Jianbiao [2 ]
Ji, Mingfei [2 ]
Li, B. Larry [2 ,3 ]
机构：
[1] Nanyang Normal Univ, Henan Prov Engn Res Ctr Environm Laser Remote Sens, Nanyang 473061, Peoples R China
[2] Nanyang Normal Univ, Coll Water Resources & Modern Agr, Nanyang 473061, Peoples R China
[3] Univ Calif Riverside, Dept Bot & Plant Sci, Ecol Complex & Modeling Lab, Riverside, CA 92521 USA
来源：
TOXICS | 2025年 / 13卷 / 02期
基金：
中国国家自然科学基金;
关键词：
biochar; heavy metals; soil remediation; application potential; BLACK CARBON; ADSORPTION PERFORMANCE; PRODUCTION TEMPERATURE; PYROLYSIS TEMPERATURE; MICROBIAL COMMUNITY; CHEMICAL-PROPERTIES; AQUEOUS-SOLUTIONS; RICE YIELD; MECHANISMS; SORPTION;
D O I：
10.3390/toxics13020069
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
With the rapid development of industry and agriculture, soil heavy metal contamination has become an important environmental issue faced today and has gradually attracted widespread attention. Finding a cheap, widely available, and biodegradable material that can promote crop growth and stabilize heavy metals has become a research focus. Crop straw biochar, due to its high specific surface area, rich surface functional groups, and high cation exchange capacity (CEC), has shown good effects on the remediation of inorganic and organic pollutants in the environment. This article reviews recent research on the use of crop straw biochar for soil heavy metal contamination remediation, providing a detailed analysis from the preparation, characteristics, modification of crop straw biochar, mechanisms for reducing the toxicity of heavy metals in soil, and its application and risks in remediating heavy metal-contaminated soils. It also comprehensively discusses the potential application of crop straw biochar in the remediation of heavy metal-contaminated soils. The results show that crop straw biochar can be used as a new type of immobilizing material for the remediation of heavy metal-contaminated soils, but there are issues with the remediation technology that needs to be optimized and innovated, which poses challenges to the widespread application of crop straw biochar. In the future, efforts should be strengthened to optimize and innovate the application technology of crop straw biochar, conduct research on the remediation effects of cheap modified crop straw biochar and the co-application of crop straw biochar with other immobilizing materials on heavy metal-contaminated soils, and carry out long-term monitoring of the effects of crop straw biochar in soil heavy metal remediation in order to achieve the goal of ensuring food safety and the rational use of solid waste.
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页数：16
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