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城市固体废物焚烧灰中的和多基物质:发生和管理影响

Yalan Liu¹, Jake Thompson², Nicole M Robey²

¹University of Florida, Department of Environmental Engineering Sciences, College of Engineering, Gainesville, FL 32611 USA; Florida Atlantic University, Department of Civil, Environmental and Geomatics Engineering, Boca Raton, FL 33431 USA.

Waste management (New York, N.Y.)

|November 10, 2025

概括

城市固体废物焚烧灰中含有和多基物质 (PFAS). 底层灰 (BA) 的PFAS度高于飞 (FA),这表明BA是焚烧残留物中PFAS的主要来源.

科学领域:

环境化学环境化学
废物管理科学废物管理科学
分析化学分析化学

背景情况:

在城市固体废物焚烧 (MSWI) 灰中检测到和多基物质 (PFAS).
了解PFAS在底层灰 (BA) 和飞灰 (FA) 之间的分区对于废物管理至关重要.
关于MSWI灰组成部分内PFAS分布的数据有限.

研究的目的:

量化和比较来自佛罗里达州MSWI设施的BA和FA中的PFAS度.
在每个灰类型中识别主要的PFAS化合物.
评估BA对MSWI残留物总体PFAS的贡献,并探索影响PFAS含量的因素.

主要方法:

在佛罗里达州四个MSWI设施的BA和FA样本中分析了52种PFAS化合物.
使用已确定的分析技术确定PFAS度.
对PFAS含量,点火损失 (LOI) 和其他灰属性之间的相关性分析.

主要成果:

与FA (0.33 ng g-1) 相比,BA表现出明显更高的PFAS度 (2.2 ng g-1).
在BA中,甲基酸二甲基 (diPAP) 主要存在,而FA显示出更多样化的PFAS配置文件.
BA占佛罗里达州MSWI残留物中估计的年度PFAS的89%,证实它是主要来源.

结论:

底层灰是MSWI残留物中PFAS的主要储存物.
提高燃烧效率 (更高的燃烧率) 可能会降低灰中的PFAS含量,正如与LOI的相关性所示.
虽然BA PFAS水平低于当前的EPA基准值,但潜在的泄漏风险,特别是重复使用期间的diPAP,需要进一步调查.

关键词:

有益的使用有益的使用.下面的灰是下面的灰.飞行灰的飞行灰这是LC-MS/MS.城市固体废物焚烧 (MSWI) 灰在PFAS中,有很多方法.

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