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用空气驱动的流化床非热等离子体修复被污染的土壤中的per-和多基物质

Yinyin Zhang¹, Li Cai¹, Han Zhang²

¹College of Environmental Science and Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China.

Journal of hazardous materials

|December 11, 2025

概括

这项研究表明,液化床非热等离子体 (NTP) 有效地修复了土壤中的和多基物质 (PFAS). 该系统有效地去除各种PFAS,包括长链PFCA和HFPO寡合物,提供一个环保的解决方案.

科学领域:

环境科学环境科学
化学工程是化学工程的重要组成部分.
等离子体物理学的物理学

背景情况:

和多醇基物质 (PFAS) 是持久性环境污染物,具有重大生态和人类健康风险.
对于PFAS污染的土壤,迫切需要有效的整治策略.

研究的目的:

调查液化床非热等离子体 (NTP) 系统用于修复PFAS污染土壤的有效性.
评估各种PFAS化合物的去除,包括遗留的完全碳酸 (PFCAs) 和六烯酸氧化物 (HFPO) 寡合酸.
确定影响PFAS去除的关键因素,阐明降解机制.

主要方法:

使用液化床非热等离子体 (NTP) 系统,使用压缩空气作为工作气体.
评估了七种代表性PFAS化合物的去除 (C5-C9 PFCAs,HFPO-DA,HFPO-TA).
采用机器学习 (XGBoost),光学发射光谱,激素清理,DFT计算和ECOSAR建模.

主要成果:

实现了PFAS的高去除效率,包括几乎完全去除长链PFCA和大量去除HFPO寡合物.
机器学习确定工作气体成分是消除PFAS的最有影响的因素.
确定了负责C-F键裂解的关键反应物种 (e-,OH•,NO2•).
与原始PFAS相比,降解产品显示出预测较低的急性毒性和生物积累.

结论:

液化床NTP系统显示了有效和环保的PFAS污染土壤修复的巨大潜力.
优化等离子体条件和了解反应性物种对于有效的PFAS降解至关重要.
该技术为解决持续存在的PFAS污染挑战提供了一个有希望的解决方案.

关键词:

降解机制的降解机制流化床NTP系统的流化床NTP系统在HFPO中含有寡合酸.在PFAS中,有很多方法.土壤整治土壤整治土壤整治

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