SBIR PHASE I: High Throughput, Ion Selective Metal Separation Composites

SBIR 第一阶段：高通量、离子选择性金属分离复合材料

• 批准号: 0060702
• 负责人: Richard Hammen
• 金额: $ 10万
• 依托单位: ChelaTech, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-01-01 至 2001-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0060702&HistoricalAwards=false
• 关键词: SBIR; PHASE; Throughput; Ion; Selective

This Small Business Innovation Research (SBIR) Phase I project will develop high throughput metal ion-selective separation composites for the extraction and purification of critical metals in production, and water and metal recycling environments. The problem this research addresses is the high cost and inefficiency of existing metal separation resins. Ion exchange processes operate by passing the metal-containing solution through a bed of porous particles with functional chemistry inside the pores. Since the solution prefers to flow around the particle, the diffusion of metal ions into the pores is slow and rate limiting. This research literally turns the pore diffusion problem inside out by synthesizing composite column matrices composed of solid nonporous particles. The composite materials are assembled by formation of thinly crosslinked, functional polymers that are covalently tethered in the interstitial volumes between solid particles. The polymer networks can be visualized as an array of 'spider webs' suspended in the micron-scale interparticle volumes of the composite columns. The strands of the nano spider webs are functionalized with metal-selective chelating reagents. The research objectives are to synthesize and test transition metal-selective extraction composites. The project is expected to produce prototype high throughput columns that are manufacturable at an extremely low cost. The commercial applications of the research involve most fields of water and metal separations. The uses include extraction of toxic metals from water, water deionization and recycling, semiconductor wastewater recycling, and the mining of copper, gold, platinum, nickel, and cobalt.

该小型企业创新研究 (SBIR) 第一阶段项目将开发高通量金属离子选择性分离复合材料，用于生产、水和金属回收环境中关键金属的提取和纯化。本研究解决的问题是现有金属分离树脂成本高且效率低。 离子交换过程是通过使含金属溶液通过多孔颗粒床来进行的，孔内具有功能化学物质。由于溶液更喜欢在颗粒周围流动，因此金属离子扩散到孔中的速度很慢并且速率受到限制。 这项研究通过合成由固体无孔颗粒组成的复合柱基体，彻底解决了孔扩散问题。 复合材料是通过形成薄层交联的功能聚合物来组装的，这些聚合物共价束缚在固体颗粒之间的间隙体积中。 聚合物网络可以被视为悬浮在复合柱的微米级颗粒间体积中的“蜘蛛网”阵列。纳米蜘蛛网的丝线用金属选择性螯合剂进行功能化。 研究目标是合成和测试过渡金属选择性萃取复合材料。 该项目预计将生产出能够以极低的成本制造的原型高通量色谱柱。该研究的商业应用涉及水和金属分离的大部分领域。 用途包括从水中提取有毒金属、水去离子和回收、半导体废水回收以及铜、金、铂、镍和钴的开采。