L2M NSERC - A process for the removal of forever chemicals

L2M NSERC - 永久去除化学物质的工艺

• 批准号: 576566-2022
• 负责人: Mohseni, MadjidM
• 金额: $ 1.46万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=746743
• 关键词: L2M; NSERC; process; removal; forever

Per- and poly-fluoroalkyl substances (PFAS) are persistent chemicals which have drawn substantial attention due to their potential toxicity and ubiquitous presence in the environment. Close to 42,000 and 6,000 active or suspected PFAS contaminated sites have been detected in the US and Canada, respectively. Recently, several PFAS have been linked to cancer, liver/kidney damage and developmental effects in infants. Consequently, PFAS are regulated with immediate action under different jurisdictional guidelines throughout the world. More importantly, PFAS are not removed by the common water treatment technologies employed in majority of the treatment systems across the globe. In this work, we use multiple synergistic technologies simultaneously to effectively achieve in-situ remediation of PFAS, overcoming technical, economical, and environmental challenges associated with alternative PFAS treatment processes. PFAS are firstly concentrated from a large volume of feed water using adsorptive materials. Then, through destructive technologies, concentrated PFAS in the retentate are mineralized and exhausted adsorptive materials are regenerated for further cycles, thereby reducing the carbon footprint or environmental impact. This process is able to remove long- and short-chained, precursor, and emerging PFAS. It also prevents further release of fluorinated chemicals to the environment which happens through incineration or burying adsorptive processes' residue.

全氟烷基和多氟烷基物质（PFAS）是一种持久性化学品，由于其潜在的毒性和普遍存在于环境中而引起了人们的广泛关注。在美国和加拿大分别检测到近42，000个和6，000个活跃或疑似PFAS污染的场地。最近，几种PFAS与婴儿的癌症，肝/肾损伤和发育影响有关。因此，PFAS在世界各地根据不同的司法指导方针受到监管，并立即采取行动。更重要的是，PFAS不能被地球仪中大多数处理系统采用的普通水处理技术去除。在这项工作中，我们同时使用多种协同技术来有效地实现PFAS的原位修复，克服与替代PFAS处理工艺相关的技术，经济和环境挑战。PFAS首先使用吸附材料从大量给水中浓缩。然后，通过破坏性技术，使渗余物中的浓缩PFAS矿化，并使耗尽的吸附材料再生用于进一步的循环，从而减少碳足迹或环境影响。该过程能够去除长链和短链、前体和新出现的PFAS。它还可以防止通过焚烧或掩埋吸附过程的残留物而进一步向环境释放氟化化学品。