Remediation of soil and groundwater impacted by per- and polyfluoroalkyl substances

受全氟烷基和多氟烷基物质影响的土壤和地下水的修复

• 批准号: 530133-2018
• 负责人: Kueper, Bernard
• 金额: $ 7.67万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=692899
• 关键词: Remediation; soil; groundwater; impacted; per

Perfluoralkyl and polyfluoroalkyl substances (PFAS) are emerging contaminants that have been found in Canadian lakes, wetlands, groundwater and soil. The development of treatment strategies and technologies for PFAS represents an urgent need throughout North America due to their toxicity, persistence and ubiquity. Research results will directly benefit Canadian industries, governments and land owners who have environmental liabilities at PFAS impacted sites. Examples include fire-fighting training areas at Canadian airports, petrochemical facilities, fire stations and military bases, sites where fire-fighting foams containing PFAS have been employed to extinguish fires, and industrial sites where PFAS have been used to waterproof clothing, manufacture certain food wrappers and containers, and the application of water repellants on fabrics and carpets. Currently, there are no on-site destructive technologies available for the treatment of PFAS. Contaminated soil is treated by excavation and off-site incineration, which is costly and involves the transportation of PFAS impacted soil along public corridors. Contaminated groundwater is treated by either pump-and-treat or adsorptive barriers, which can be costly and must be operated in perpetuity. The objectives of this research are to advance the use and effectiveness of three different technologies for the treatment of soil and groundwater impacted by PFAS such that destruction to below Canadian screening values can be achieved. These technologies are: 1) ball-milling, 2) ball-milling in combination with oxidants, and 3) metal-catalyzed reductants. Research will be carried out in the laboratory by a team of three graduate students and a post-doctoral fellow in collaboration with professors from Queen's University and Royal Military College of Canada, and two industrial partners who are providing cash and in-kind contributions.

全氟烷基和多氟烷基物质 (PFAS) 是在加拿大湖泊、湿地、地下水和土壤中发现的新兴污染物。 由于 PFAS 的毒性、持久性和普遍性，整个北美地区迫切需要开发 PFAS 的治疗策略和技术。研究结果将直接惠及在 PFAS 影响地点负有环境责任的加拿大工业界、政府和土地所有者。 例如，加拿大机场、石化设施、消防站和军事基地的消防训练区、使用含有 PFAS 的消防泡沫灭火的场所，以及使用 PFAS 防水衣服、制造某些食品的工业场所包装纸和容器，以及织物和地毯上防水剂的应用。目前，尚无可用于处理 PFAS 的现场破坏性技术。 受污染的土壤通过挖掘和场外焚烧进行处理，成本高昂，并且需要沿公共走廊运输受 PFAS 影响的土壤。受污染的地下水可以通过泵处理或吸附屏障进行处理，这种方法成本高昂，而且必须永久运行。 这项研究的目的是促进三种不同技术的使用和有效性，以处理受 PFAS 影响的土壤和地下水，从而将破坏程度降低到低于加拿大筛选值。 这些技术是：1) 球磨，2) 与氧化剂结合的球磨，以及 3) 金属催化还原剂。 研究将由三名研究生和一名博士后研究员组成的团队与来自女王大学和加拿大皇家军事学院的教授以及提供现金和实物捐助的两个工业合作伙伴合作在实验室进行。