Enhancing global prediction of PFAS pollutant fate in sediment

加强对沉积物中 PFAS 污染物归宿的全球预测

• 批准号: NE/Y003152/1
• 负责人: Immacolata Bortone
• 金额: $ 10.68万
• 依托单位: CRANFIELD UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FY003152%2F1
• 关键词: Enhancing; global; prediction; PFAS; pollutant

This project will establish a unique global research partnership focused on studying sediments contaminated by per- and polyfluoroalkyl substances (PFAS). PFAS sediment pollution is a widespread and persistent issue caused by human activities and industrial processes. Over the years, PFAS mixtures have accumulated in fine sediment deposits in freshwater and coastal systems, creating a store of highly concentrated chemical mixtures that can be released into the water through physical, chemical, and biological mechanisms. In Europe and the UK, over 17,000 sites with high concentrations of PFAS have been identified, often far from their main sources, with concentrations exceeding 500 times the threshold limits. These "forever chemicals" are extremely harmful to wildlife and the aquatic environment due to their high persistence and resistance to degradation. However, there is a lack of knowledge about the primary physical and chemical processes responsible for their fate and transport in aquatic systems, as well as the mutual interaction of PFAS mixtures. This project will establish a new international research partnership focused on the risks posed by contaminated sediment to bridge this knowledge gap by conducting bespoke experimental investigations and prediction modelling. The focus will be on the quantitative understanding of the mobilisation of PFAS in sediments, how waterbody hydrodynamics and geochemical processes impact the fate and transport of PFAS bound to fine sediments. This research outcome will provide a multidimensional approach to describe pollutant behavior and mixture interactions in waterbody sediment that will enhance existing models, such as the Water Quality Analysis Simulation Program (WASP8) and the Remedial Design of Contaminated Sediments (CapSim 4), both used internationally by stakeholders, academia, and industry to describe pollutant behaviour and mixture interactions in waterbody sediment.

该项目将建立一个独特的全球研究伙伴关系，重点是研究受到人类和多氟烷基物质（PFA）污染的沉积物。 PFAS沉积物污染是由人类活动和工业过程引起的普遍且持续存在的问题。多年来，PFAS混合物在淡水和沿海系统中的细小沉积物中积累，从而形成了高度浓缩的化学混合物的存储，这些混合物可以通过物理，化学和生物学机制释放到水中。在欧洲和英国，已经发现了超过17,000个具有高浓度PFA的地点，通常远离其主要来源，浓度超过了阈值限制的500倍。这些“永远的化学物质”对野生动植物和水生环境极为有害，因为它们的持久性和抵抗力降解。但是，缺乏有关导致其水生系统中命运和运输的主要物理和化学过程以及PFA混合物的相互作用的知识。该项目将建立一种新的国际研究伙伴关系，重点是污染沉积物带来的风险，通过进行定制的实验研究和预测建模来弥合知识差距。重点将放在对沉积物中PFA的动员的定量理解上，水体流体动力学和地球化学过程如何影响PFA与精细沉积物结合的PFA的命运和运输。这项研究结果将提供多维方法来描述水体沉积物中的污染物行为和混合相互作用，这将增强现有模型，例如水质分析模拟计划（WASP8）和受污染的沉积物的补救设计（Capsim 4）（Capsim 4），两者在国际性地使用了利益相关者，学术界，学术界，学术界和污染物的污染物互动和混合体系中的污染物。