Novel clay mineral-based technologies for the treatment of per- and polyfluoroalkyl substances-impacted matrices

用于处理受全氟烷基物质和多氟烷基物质影响的基质的新型粘土矿物技术

• 批准号: 570719-2021
• 负责人: Liu, Jinxia
• 金额: $ 9.97万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=722752
• 关键词: Novel; clay; mineral; based; technologies

Per- and polyfluoroalkyl substances (PFAS) are among the main contaminants of concern at thousands of contaminated sites in Canada and the United States and also among the most challenging pollutants to remediate. Efficient and sustainable remediation technologies are urgently needed for mobile PFAS and those retained by soils, rocks or solid surfaces. We propose to apply a systemic view to the PFAS contamination problem from source to plume and suggest developing a modular treatment train based on natural and modified clay minerals. For the treatment train, we will develop innovative, cost-effective, and sustainable approaches for in-situ and ex-situ treatment of PFAS-impacted ground- and surface water, soil, and sediment. Our objectives are (1) to develop a new treatment process that uses reactive and self-regenerating Fe-containing clay minerals for in-situ remediation of contaminant source zones via radical-accelerated PFAS degradation, and (2) to further develop and evaluate modified bentonite adsorbents for the removal of mobile/mobilized PFASs in challenging water matrices. The team will build upon preliminary data and years of experience in PFAS and clay mineral research to develop the mechanistic process understanding for future applications of clay minerals for modular in-situ and ex-situ treatment of PFAS. Our treatment train targets the source of contamination and will therefore provide a clear endpoint for clean-up operations, which enables cost predictions and environmental impact assessments. When practical and sustainable PFAS treatment solutions are identified and well developed, there will be thousands of sites where the solutions could be applied. These upcoming remediation projects will energize Canada's economy through engineering, technology development, environmental remediation and water/wastewater treatment market. Federal government departments, municipalities and private corporations most affected by the PFAS crisis to may redirect investments currently used to fund inefficient PFAS treatments to business initiatives that would greatly benefit to the Canadian economy.

在加拿大和美国成千上万的污染场所，也是对补救措施的最具挑战性的污染物之一。移动PFA和土壤，岩石或固体表面保留的技术迫切需要高效且可持续的补救技术。我们建议将全身视图应用于PFAS污染问题，从源头到羽流，并建议基于天然和改良的粘土矿物开发模块化治疗列车。对于治疗列车，我们将开发创新，具有成本效益和可持续的方法，用于对PFAS影响的地面和地表水，土壤和沉积物的原位和现场治疗。我们的目标是（1）开发一种新的治疗过程，该过程使用反应性和自我再生的含铁的粘土矿物质，通过自由基化的PFAS降解对污染物源区的原位修复，（2）进一步开发和评估修改后的弯曲型宾夕法尼亚剂量，以使改良的弯曲剂量的流动/流动/流动的Waters pfric在挑战性的pfric中。该团队将基于PFA和粘土矿物研究的初步数据以及多年的经验，以开发机械过程的理解，以了解粘土矿物在PFA的模块化和现场治疗中的未来应用。我们的治疗列车针对污染的来源，因此将为清理操作提供明确的终点，这可以实现成本预测和环境影响评估。当确定和发达的实用和可持续的PFA治疗解决方案时，将有成千上万的地点可以应用解决方案。这些即将到来的补救项目将通过工程，技术开发，环境修复和水/废水处理市场来激发加拿大的经济。联邦政府部门，市政当局和私人公司受PFA危机影响最大的可能会重定向投资，目前用于为无效的PFA治疗提供资金，以将其大大受益于加拿大经济。