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

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

项目概要/摘要 标题 用于去除家用饮用水中 PFAS 的过滤介质 SBIR二期申请 首席研究员：Steven Dietz，TDA Research, Inc. 全氟烷基物质和多氟烷基物质 (PFAS)，通常也称为全氟化合物，是一个大家族 已使用数十年的全球分布的人造化学品和全氟辛酸 (PFOA)。 全氟辛烷磺酸 (PFOS) 是最常见的 PFAS，但还存在数千种其他 PFAS 衍生物。 已广泛应用于消费产品，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、液压航空燃料和航空航天、 汽车、建筑和电子行业中的 PFAS 是地下水中的新兴环境污染物。 由于其全球分布、持久性、毒性和生物降解趋势，它们引起了极大的关注。 49 个州的 1400 多个地点已发现 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。 它们不易被空气、水或阳光分解，因此，人们可能会接触到 PFAS。 PFAS 是几十年前生产的，可以在空气和水中长距离传播，使人们接触 PFAS。 从数英里之外的设施制造或排放的人类也可能通过接触而发生接触。 2016 年，EPA 确定了含有 PFAS 的终生健康建议 (LHA) 水平为万亿分之 70。 (ppt) 对于饮用水中 PFAS 的单独或组合浓度，许多州正在制定甚至 流行病学研究表明，人类中 PFAS 的发生与甲状腺疾病有关。 高胆固醇、溃疡性结肠炎、肾癌、睾丸癌和妊娠高血压。 能够满足 EPA 目标的水处理技术并不具有成本效益，特别是对于家庭使用而言， 需要高效、具有成本效益且能够净化饮用水的技术/先进材料 可以满足当前 EPA 70 ppt 的目标、纽约州 10 ppt 的新下限以及可能更严格的目标 将遵循的法规。 TDA Research, Inc (TDA) 提议开发一种基于吸附的系统，用于去除饮用水中的 PFAS 降至 EPA 规定的 70 ppt（万亿分之一）或更低的限度。此类系统的关键是成本低、成本高。 具有快速动力学去除 PFAS 的容量吸附剂 TDA 的吸附剂采用接枝的介孔碳结构。 带有路易斯碱官能团，通过物理吸附去除PFAS，提供非常快的速度。 吸附动力学和功能化吸附位点的可及性路易斯酸碱的强度。 可以调整相互作用以使吸附剂即使在存在多种污染物的情况下也能有效 吸附剂的快速吸附和高 PFAS 容量将减小系统尺寸并启用 它们在较小的家庭系统中的使用。 14