有效地减少土壤中的的流动性和健康风险,根据醇修饰生物炭修正案
Yao Huang1, Bin Zhao2, Gaocheng Liu1
1Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Academy of Sciences, Guangzhou 510650, China.
Journal of hazardous materials
|October 12, 2023
概括
用醇修饰的生物炭有效地使受污染的土壤中的停滞不前,将可浸的降低到安全水平. 这种可持续的处理提供了对的长期保护.
科学领域:
- 环境科学 环境科学
- 土壤修复土壤的修复.
- 地质化学 地质化学
背景情况:
- 土壤污染带来了重大的环境和健康风险.
- 现有的固定技术通常效率低,长期稳定性差,易受干扰.
- 迫切需要有效和稳定的方法来控制土壤中的流动性和相关的健康危害.
研究的目的:
- 确认使用醇修饰生物炭在土壤中固定的可行性.
- 阐明醇修饰生物炭降低的可性和生物可用性的机制.
- 评估长期有效性和对土壤质量的影响.
主要方法:
- 污染的土壤用醇修饰的生物炭进行处理.
- 随着时间的推移 (32天,198天,1-3年) 监测可浸度.
- 分析物种转化,甲基减少和土壤特性变化 (CEC,N,TOC).
主要成果:
- 可化的在32天内下降到低于危险废物值.
- 198天后,固定率在79.8-98.2%之间,可用甲基减少了50%.
- 长期治疗 (1-3年) 保持可浸的在可接受的健康风险限值和地下水质量标准内.
- 通过复合和沉,修改为的生物炭促进了活性物种转化为稳定的形式 (例如,HgS).
- 土壤质量的显著改善,包括增强的阴离子交换能力,可用的和总有机碳.
结论:
- 醇修饰生物炭是一种非常有效的策略,可以在受污染的土壤中固定.
- 该疗法在减少流动性和健康风险方面表现出强大的长期稳定性和有效性.
- 这种方法提供了一种可持续的解决方案,用于修复受污染的环境并改善土壤健康.
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