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在有机物质含量不同的土壤中,和多醇基物质 (PFAS) 的调动

Anirban Dhulia¹, Charbel Abou-Khalil², Jitendra Kewalramani³

¹Center for Natural Resources, Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ, 07102, USA.

|June 2, 2024

概括

电动力学修复和液压冲洗有效地从受污染的土壤中去除和多基物质 (PFAS). 清除效率取决于土壤有机物和PFAS类型,提供特定地点的解决方案.

科学领域:

环境科学环境科学
土壤修复土壤的修复.
污染物水文地质学

背景情况:

和多基基物质 (PFAS) 构成环境和健康风险.
在土壤中的PFAS现场中和是很困难的.
将PFAS调动到水溶液中进行处理是一种可行的策略.

研究的目的:

研究从受污染的土壤中去除 perfluorooctanoate (PFOA) 和 perfluorooctane sulfonate (PFOS) 的方法.
评估电动力学 (EK) 补救和液压冲洗 (HG) 对于PFAS调动的有效性.
评估土壤特征,特别是有机物 (OM) 对移除效率的影响.

主要方法:

使用2D实验室设置来模拟土壤污染.
电动力学补救和液压冲洗被应用了15天.
在不同有机物含量 (5%至75%) 的土壤中量化了PFAS的去除.

主要成果:

在所有测试的土壤中,电动力学修复实现了一致的PFOA去除 (∼80%).
通过EK去除PFOS与OM含量有显著差异,从14% (5%的OM) 增加到60% (50%的OM).
液压冲洗显示PFOA和PFOS的去除增加,从20% (5% OM) 增加到80% (75% OM).

结论:

无论是EK整治还是液压冲洗,都有效地从有机土壤中调动PFAS.
在EK和HG之间做出选择取决于特定地点的因素,PFAS类型和土壤特征.
这些方法为 PFAS 污染土壤的管理提供了可适应的解决方案.

关键词:

吸附性异热体是一种异热体.电动力学修复电动力学修复电子迁移是一种电子迁移.电层层层层的电层层层层的电层层层.透性透性的土壤冲洗土壤冲洗

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