SBIR Phase II: Ion-Exchange Fiber Composites for Rapid and Selective Removal of Perchlorate from Water

SBIR 第二阶段：用于快速选择性去除水中高氯酸盐的离子交换纤维复合材料

• 批准号: 1256639
• 负责人: James Langer
• 金额: $ 46.47万
• 依托单位: Serionix Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-02-01 至 2019-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1256639&HistoricalAwards=false
• 关键词: SBIR; Phase; II; Ion; Exchange

This Small Business Innovation Research Phase II project will result in the continuing development of novel ultrafast, highly selective, high permeability ion-exchange fiber composites (IXFCs) for removing perchlorate from drinking water. The proposed material removes perchlorate 10-100 times faster than the best available technology and employs a low-cost production method compatible with widely available manufacturing equipment. Rapid contaminant removal is made possible by the use of micron-scale mass transfer distances; whereas commonly used beads and granular media are limited to much larger sizes resulting in drawbacks such as difficult containment and enormous pressure drops. However, IXFCs display both high permeability and self-containment due to their permanently intertwined, self-supporting structure. Serionix demonstrated the feasibility of this technology in Phase I and will continue in the Phase II with the following key goals: 1) optimization of ultra-high capacity IXFCs for perchlorate removal; 2) design/build IXFC purification cartridges for evaluation by industrial partners; 3) identify and validate chemistries for complimentary IXFCs that are selective for heavy metals such as lead and mercury; and 4) produce IXFCs at a pilot scale and develop strategy for commercial production.The broader impact/commercial potential of this research is the development and commercialization of a low-cost technology enabling regulatory compliance and improved protection of human health. The first targeted application is perchlorate, which the EPA is set to regulate in drinking water by 2014. This represents only the first commercial opportunity for a platform technology with the ultimate potential to transform the industrial and residential water treatment landscape. Future applications may include ultrahigh efficiency water deionization, softening, and industrial wastewater recycling, personal protective equipment and clothing, and high activity solid acid/base catalysts. Dissemination of data and interpretation will contribute to improved understanding of mass transfer characteristics in fibrous sorbent materials used in both water and air treatment.

这个小企业创新研究第二阶段项目将持续开发新型超快、高选择性、高渗透性离子交换纤维复合材料（IXFC），用于去除饮用水中的高氯酸盐。所提出的材料去除高氯酸盐的速度比现有最佳技术快 10-100 倍，并采用与广泛使用的制造设备兼容的低成本生产方法。通过使用微米级传质距离可以快速去除污染物；而常用的珠子和颗粒介质仅限于更大的尺寸，从而导致难以容纳和巨大压降等缺点。然而，由于 IXFC 具有永久交织的自支撑结构，因此具有高渗透性和自我封闭性。 Serionix 在第一阶段展示了该技术的可行性，并将在第二阶段继续进行，其主要目标如下：1）优化超高容量 IXFC 以去除高氯酸盐； 2) 设计/建造IXFC纯化柱以供工业合作伙伴评估； 3) 识别并验证对铅和汞等重金属具有选择性的互补 IXFC 的化学成分； 4) 中试规模生产 IXFC 并制定商业化生产战略。这项研究更广泛的影响/商业潜力是低成本技术的开发和商业化，从而实现监管合规并改善对人类健康的保护。第一个目标应用是高氯酸盐，EPA 计划在 2014 年之前对饮用水中的高氯酸盐进行监管。这只是平台技术的第一个商业机会，该技术具有改变工业和住宅水处理格局的最终潜力。未来的应用可能包括超高效水去离子、软化和工业废水回收、个人防护设备和服装以及高活性固体酸/碱催化剂。数据的传播和解释将有助于更好地了解水和空气处理中使用的纤维吸附剂材料的传质特性。