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溶解有机碳对活性碳修改土壤中基和多基流动性的影响

Georgios Niarchos¹, Lutz Ahrens², Dan B Kleja³

¹Department of Earth Sciences, Uppsala University, P.O. Box 256, SE-751 05, Uppsala, Sweden; Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU), P.O. Box 7050., SE-750 07, Uppsala, Sweden.

Environmental pollution (Barking, Essex : 1987)

|August 2, 2025

概括

溶解有机碳 (DOC) 显著阻碍合活性炭 (CAC) 通过合活性炭 (PFAS) 清除和多基物质. DOC增加了PFAS的流动性和化,影响了有机丰富土壤的修复策略.

科学领域:

环境化学环境化学
土壤科学土壤科学
整治技术整治技术

背景情况:

和多基基物质 (PFAS) 是持久的环境污染物.
由于它们的固和复杂的环境行为,它们的修复具有挑战性.
溶解有机碳 (DOC) 极大地影响PFAS的命运和运输,但其作用尚未完全理解.

研究的目的:

调查DOC对PFAS吸附和流动性的影响.
为了评估合活性炭 (CAC) 在不同DOC条件下的PFAS整治中的有效性.
阐明DOC通过哪些机制影响土壤中的PFAS行为.

主要方法:

动态柱体实验是使用参考和CAC处理的土壤进行的.
分析了14种不同的PFAS化合物.
确定了土壤-水分区系数 (Kd值) 和质量平衡.

主要成果:

在CAC处理的土壤中,DOC显著降低了PFAS吸附,增加了水性PFAS度.
所有PFAS的Kd值在DOC的存在下下降了数量级.
DOC提高了PFAS化率高达10倍,并增加了流动性,特别是在碳改性土壤中.

结论:

DOC在促进PFAS运输方面发挥着至关重要的作用,降低了CAC整治的有效性.
了解DOC的影响对于准确的PFAS风险评估和优化有机丰富环境中的修复至关重要.
基于吸附剂的修复策略需要仔细考虑DOC的存在,以有效地去除PFAS.

关键词:

吸附方式吸附方式吸附方式体活性炭是一种体活性炭.脱吸方式脱吸方式溶解的有机碳溶解的有机碳整治整治整治整治交通运输交通运输交通运输交通运输

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