Filtration Media for In-Home PFAS Removal from Drinking Water

用于去除家用饮用水中 PFAS 的过滤介质

• 批准号: 10761026
• 负责人: STEVEN D DIETZ
• 金额: $ 75.89万
• 依托单位: TDA RESEARCH, INC.
• 依托单位国家: 美国
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-02-02 至 2025-07-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10761026
• 关键词: Acids; Adsorption; Air; American; Area; Attention; Aviation; Beds; Carbon; Carpet; Certification; Chemicals; Chemistry; Chlorine; Cholesterol; Collaborations; Economics; Electronics; Environment; Environmental Pollutants; Equipment; Evaluation; Excision; Exposure to; Family; Filtration; Food Packaging; Foundations; Future; Government; Health; Home; Human; Incidence; Individual; Industrialization; Industry; Kinetics; Life; Link; Location; Malignant neoplasm of testis; Marketing; Names; New York; Persons; Pesticides; Pharmacologic Substance; Phase; Plant Resins; Poly-fluoroalkyl substances; Probability; Procedures; Process; Production; Regulation; Renal carcinoma; Research; Sampling; Sanitation; Series; Site; Small Business Innovation Research Grant; Solvents; Structure; Sunlight; Surface; System; Technology; Teflon; Test Result; Testing; Thyroid Diseases; Toxic effect; Travel; Ulcerative Colitis; Water; Water Purification; Water Supply; Work; aqueous; base; bioaccumulation; consumer product; contaminated water; cost; cost effective; design; design and construction; drinking; drinking water; economic evaluation; epidemiology study; exposed human population; functional group; ground water; improved; man; manufacture; perfluorooctane sulfonate; perfluorooctanoic acid; pregnancy hypertension; prototype; public health relevance; scale up; water treatment; Acids; Adsorption; Air; American; Area; Attention; Aviation; Beds; Carbon; Carpet; Certification; Chemicals; Chemistry; Chlorine; Cholesterol; Collaborations; Economics; Electronics; Environment; Environmental Pollutants; Equipment; Evaluation; Excision; Exposure to; Family; Filtration; Food Packaging; Foundations; Future; Government; Health; Home; Human; Incidence; Individual; Industrialization; Industry; Kinetics; Life; Link; Location; Malignant neoplasm of testis; Marketing; Names; New York; Persons; Pesticides; Pharmacologic Substance; Phase; Plant Resins; Poly-fluoroalkyl substances; Probability; Procedures; Process; Production; Regulation; Renal carcinoma; Research; Sampling; Sanitation; Series; Site; Small Business Innovation Research Grant; Solvents; Structure; Sunlight; Surface; System; Technology; Teflon; Test Result; Testing; Thyroid Diseases; Toxic effect; Travel; Ulcerative Colitis; Water; Water Purification; Water Supply; Work; aqueous; base; bioaccumulation; consumer product; contaminated water; cost; cost effective; design; design and construction; drinking; drinking water; economic evaluation; epidemiology study; exposed human population; functional group; ground water; improved; man; manufacture; perfluorooctane sulfonate; perfluorooctanoic acid; pregnancy hypertension; prototype; public health relevance; scale up; water treatment

Project Summary/Abstract Title Filtration Media for In-Home PFAS Removal from Drinking Water SBIR Phase II Application P.I.: Steven Dietz, TDA Research, Inc. Per- and polyfluoroalkyl substances (PFAS), also commonly known as perfluorinated compounds, are a large family of man-made, globally distributed chemicals that have been used for decades. Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) are the most common PFAS, but thousands of other derivatives exist. PFAS have been widely used in consumer products such as non-stick cookware (Teflon®), carpets and carpet treatment products (Scotchgard®), food packaging, aqueous firefighting foams, hydraulic aviation fuels and in the aerospace, automotive, construction, and electronics industries. PFAS are emerging environmental pollutants in groundwater, and they are attracting significant attention due to their global distribution, persistence, toxicity and tendency to bio- accumulate. PFAS contamination has been found in more than 1400 locations in 49 states and the EPA estimates that the drinking water of more than 110 million Americans may already be contaminated. Once released into the environment, they are not easily broken down by air, water, or sunlight. Thus, people can be exposed to PFAS that were manufactured decades in the past. PFAS can travel long distances in the air and water, exposing people to PFAS manufactured or emitted from facilities many miles away. Human exposure can also occur through contact with products containing PFAS. In 2016, EPA established a lifetime health advisory (LHA) level of 70 parts per trillion (ppt) for individual or combined concentrations of PFAS in drinking water and many states are establishing even lower levels. Epidemiological studies have shown that the occurrence of PFAS in humans is linked to thyroid disease, high cholesterol, ulcerative colitis, kidney cancer, testicular cancer, and pregnancy-induced hypertension. Current water treatment technologies that can meet the EPA targets are not cost effective, especially for in-home use, necessitating a need for technology/advanced materials to cleanup drinking water that are efficient, cost effective and can meet the current EPA target of 70 ppt, the new lower New York state limit of 10 ppt and the likely even stricter regulations that will follow. TDA Research, Inc (TDA) proposes to develop an adsorption-based system for removing PFAS from drinking water down to EPA prescribed limits of 70 ppt (parts per trillion) or lower. The key to such a system is a low cost, high capacity adsorbent with fast kinetics to remove PFAS. TDA's sorbent uses a mesoporous carbon structure grafted with Lewis base functionalized groups to remove PFAS via physical adsorption. The mesopores provides very fast adsorption kinetics and accessibility to the functionalized adsorption sites. The strength of the Lewis acid-base interaction can be tuned to allow the sorbent to be effective even in the presence of the multiple contaminants found in drinking water. The fast adsorption and high PFAS capacity of the sorbent will reduce the system size and enable their use in smaller home-based systems. 14

项目摘要/摘要 从饮用水中取出的家庭PFA的标题过滤媒体 SBIR II期应用 P.I。：Steven Dietz，TDA Research，Inc。 每种和多氟烷基物质（PFA），通常称为全氟化化合物，是一个大家族 数十年来已使用的人造的，全球分布的化学物质。全氟辛酸（PFOA）和 全氟辛烷磺酸盐（PFO）是最常见的PFA，但存在成千上万的其他衍生物。 PFA有 被广泛用于消费产品，例如不粘炊具（Teflon®），地毯和地毯处理产品 （Scotchgard®），食品包装，水性消防泡沫，水解航空燃料以及航空航天 汽车，建筑和电子行业。 PFA是地下水的新兴环境污染物， 由于它们的全球分布，持久性，毒性和生物的趋势，它们引起了极大的关注 积累。在49个州的1400多个地点发现了PFAS污染，EPA估计 超过1.1亿美国人的饮用水可能已经被污染。一旦释放到 环境，它们不容易被空气，水或阳光分解。那就是人们可以接触到PFA 过去数十年是制造的。 PFA可以在空气和水中长途旅行，使人们暴露于PFA 从许多英里之外的设施制造或发射。人类的暴露也可以通过接触 包含PFA的产品。 2016年，EPA建立了终生健康咨询（LHA）水平，为每万亿美元70个零件 （PPT）用于饮用水中PFA的个体或组合浓度，许多州都在建立 较低的水平。流行病学研究表明，人类中PFA的发生与甲状腺疾病有关， 高胆固醇，溃疡性结肠炎，肾脏癌，验证癌和怀孕诱发的高血压。当前的 可以符合EPA目标的水处理技术不是成本效益的，尤其是在家庭使用中， 需要需要技术/高级材料来清理高效，成本效益的饮用水 可以满足当前70 ppt的EPA目标，新的纽约州下部限制为10 ppt，甚至可能更严格 将遵循的法规。 TDA Research，Inc（TDA）提案，以开发一种基于吸附的系统，用于从饮用水中删除PFA 向下到EPA规定的限制为70 ppt（每万亿美元）或更低。这种系统的关键是低成本，高 容量吸附剂，可快速动力学去除PFA。 TDA的吸附剂使用介孔碳结构移植 使用Lewis基础功能化组，通过物理吸附去除PFA。中孔提供非常快的 增加了吸附动力学和功能化添加吸附位点的可访问性。路易斯酸碱的强度 可以调整相互作用以使分歧即使在存在多个污染物的情况下也可以有效 在饮用水中。吸附剂的快速吸附和高PFA能力将降低系统尺寸并启用 它们在较小的家庭系统中使用。 14