和多基物质的行为:来自自热热友性有氧消化过程的见解 - 储存化-脱反应堆的见解
Caroline Rose Alukkal1, Linda S Lee2, Kevin Staton3
1Interdisciplinary Ecological Sciences & Engineering, Purdue University, West Lafayette, IN, USA; Department of Environmental & Ecological Engineering, Purdue University, West Lafayette, IN, USA.
Chemosphere
|September 18, 2024
概括
水资源回收设施 (WRRFs) 管理持久的和多基基物质 (PFAS). 像ATAD和SNDR这样的处理过程改变了PFAS配置文件,增加了PFAA和减少其他,观察到微小的总PFAS减少.
科学领域:
- 环境化学环境化学
- 环境科学 环境科学
- 水处理 处理水的方法
背景情况:
- 和多基基物质 (PFAS) 是持久性环境污染物,具有潜在的健康和生态风险.
- 水资源回收设施 (WRRF) 是管理PFAS的关键,因为它们的广泛使用和释放到环境中.
- 了解WRRF处理过程中的PFAS行为对于有效的污染物管理至关重要.
研究的目的:
- 研究在WRRF中固体流处理过程中PFAS的命运和转化.
- 评估自热热性有氧消化 (ATAD) 和储存化-脱反应堆 (SNDR) 对PFAS度和配置的影响.
- 在不同的处理条件下分析各种PFAS类的生物转化.
主要方法:
- 使用液体染色学三重四极飞行时间质谱分析60种PFAS化合物.
- 采样ATAD前,ATAD后和SNDR后的固体.
- 在评估PFAS度变化时考虑挥发性固体损失.
- 2019年和2021年数据之间的PFAS配置文件的比较.
主要成果:
- 由于生物转化,观察到PFAS类贡献的显著变化.
- perfluoroalkyl 酸 (PFAA) 的相对比例增加,而含的 PFAS 和甲基酸的相对比例下降.
- 短链PFAA在ATAD期间被丰富;大多数PFAS在SNDR期间增加,除了例外.
- 总PFAS度略有下降,可能是由于转化为未定量的超短PFAS.
结论:
- ATAD和SNDR显著改变了WRRF固体中的PFAS配置,主要是通过生物转化.
- 虽然总PFAS度略有下降,但转变为可能更具流动性或持久的超短PFAS需要进一步调查.
- 该研究强调了废水处理过程中PFAS的复杂动态,以及需要先进的分析方法来追踪所有转化产品.
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