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perfluoroalkyl 和 polyfluoroalkyl 物质从生物固体衍生堆肥中释放出来的物质

Xiangui Huang¹, Gilboa Arye², Wen Zhang³

¹Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, Sde-Boqer 8499000, Israel.

|February 23, 2026

概括

这项研究表明,从堆肥中释放的per-和多醇基物质 (PFAS) 是复杂的,受化学特性和分子结构的影响. 了解这些因素对于管理PFAS在环境中的流动性至关重要.

科学领域:

环境化学环境化学
土壤科学土壤科学
污染物水文学污染物水文学

背景情况:

和多醇基物质 (PFAS) 是生物固体衍生堆肥中发现的持久性有机污染物.
了解PFAS从堆肥中释放的机制对于评估环境风险和制定管理策略至关重要.

研究的目的:

调查各种PFAS从堆肥中的释放潜力和控制机制.
评估化物化学 (水,NaCl,CaCl2) 和堆肥特性对PFAS脱的影响.

主要方法:

在生物固体衍生堆肥上使用水和盐溶液 (10mM NaCl,5mM CaCl2) 进行了连续的浸出实验.
分析PFAS,溶解有机物 (DOM) 和化物中的主要离子.
模拟PFAS脱附动力学,使用一阶两模型.

主要成果:

PFAS的脱吸遵循了两相模式 (快速然后缓慢释放),由两模型描述得很好.
静电相互作用,特别是Ca2+桥接,显著影响了PFAS的释放,更短链的PFAS被消化得更快.
在特定的离子条件下,溶解有机物 (DOM) 复合增强了PFAS释放,表明结合释放机制.

结论:

PFAS从堆肥中的移动性是由堆肥矩阵特性,PFAS分子结构和化物化学的复杂相互作用决定的.
静电相互作用和DOM复杂化是控制PFAS释放的关键机制,需要量身定制的管理方法.

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