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是在加拿大湖泊、湿地、地下水和土壤中发现的新污染物。 由于PFAS的毒性、持久性和普遍性，其治疗策略和技术的发展在整个北美都是迫切需要的。研究结果将直接有利于加拿大工业，政府和土地所有者谁在PFAS影响网站的环境责任。 例子包括加拿大机场、石油化工设施、消防站和军事基地的消防训练区，使用含有全氟辛烷磺酸的灭火泡沫灭火的场所，以及使用全氟辛烷磺酸使衣服防水、制造某些食品包装和容器以及在织物和地毯上使用防水剂的工业场所。目前，没有现场破坏性技术可用于处理PFAS。 受污染的土壤通过挖掘和场外焚烧处理，这是昂贵的，并涉及沿着公共走廊运输受PFAS影响的土壤。受污染的地下水通过泵送和处理或吸附屏障来处理，这可能是昂贵的，并且必须永久运行。 本研究的目标是推进三种不同技术的使用和有效性，用于处理受PFAS影响的土壤和地下水，以便能够实现低于加拿大筛选值的破坏。 这些技术是：1）球磨，2）与氧化剂组合的球磨，和3）金属催化还原剂。 由三名研究生和一名博士后研究员组成的小组将在实验室进行研究，与皇后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伙伴合作。