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生物炭用于修复被潜在有毒元素污染的土壤:当前情况和挑战

Yi Wu¹, Yuhang Yan¹, Zongwei Wang¹

¹Hubei Key Laboratory of Soil Environment and Pollution Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtse River), College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China; Ministry of Agriculture and Rural Affairs, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.

Journal of environmental management

|December 9, 2023

概括

生物炭通过吸附污染物有效地修复具有潜在毒性元素 (PTEs) 的土壤. 可持续的方法包括回收和再生生物炭,以减轻长期风险并提高环境安全.

科学领域:

环境科学环境科学
土壤科学土壤科学
材料科学材料科学材料科学

背景情况:

生物炭被广泛认为具有潜在的有毒元素 (PTEs) 污染的土壤修复的潜力.
研究的重点是生物炭的补救效应,机制,影响因素和相关风险.
对生物炭应用的长期安全性和环境影响的担忧阻碍了其广泛采用.

研究的目的:

审查土壤,PTE和生物炭之间的相互作用机制,以修复受PTE污染的土壤.
评估在PTE整治场景中生物炭应用的现状.
为大规模实施生物炭在修复受PTE污染的土壤提供基础.

主要方法:

对生物炭-土壤-PTE相互作用的现有文献的审查.
分析影响生物炭功效的因素 (原料,热解温度,PTE类型,应用率).
修改生物炭策略和可持续回收/再生技术的评估.

主要成果:

生物炭直接与PTE相互作用,间接与土壤成分相互作用,改变PTE的生物可用性,移动性和毒性.
生物炭的有效性取决于原料,热解温度,PTE类型和应用速率.
改性生物炭提供了量身定制的解决方案,可持续的方法包括生物炭回收和再生 (95.0-95.6%) 与显著的PTE去除 (例如,>20%的Cd去除).

结论:

生物炭是治疗PTE的有希望的药物,但长期的安全性和潜在的风险需要仔细考虑.
可持续的修复策略,包括生物炭回收和再生,对于减轻负面影响至关重要.
需要进一步的研究来提高生物炭的环境安全性,并促进其在污染土壤管理中的更广泛应用.

关键词:

基于生物炭的材料.在现场移除.相互作用机制的相互作用机制.风险风险风险风险风险系统整治工程是系统整治工程.

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