SBIR PHASE I: Advanced Membrane for Waste Metal Recovery

SBIR 第一阶段：用于废金属回收的先进膜

• 批准号: 9561754
• 负责人: Fei Wang
• 金额: $ 7.5万
• 依托单位: EIC Laboratories Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-05-01 至 1996-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9561754&HistoricalAwards=false
• 关键词: SBIR; PHASE; Advanced; Membrane; Waste

95-61754 Rose This Small Business Innovation Research Phase I project will evaluate a multicompartment electrodialysis cell using a new anion-exchange membrane for the separation and recovery of metals in contaminated wastewater. The initial application will be for chromium recovery from plating and metal finishing baths which is of both environmental and economic concern. Regulatory standards are increasingly stringent and significant savings would result from recovery and recycling of the metal. Use of membranes for filtration and concentration is a promising method to address the problem because they operate at low temperatures, do not generate new waste, and are able to handle large volumes. The proposed cell will permit simultaneous removal of both hexavalent and trivalent chromium from the waste stream. In the Phase I program a new membrane with high chemical resistance will be synthesized that is less expensive than perfluorinated membranes. Its chemical stability and electrical properties will be measured and compared to currently available membranes. The membrane will be incorporated into a three-compartment, laboratory-scale electrodialysis cell to demonstrate effective removal of toxic metal cations and hexavalent chromium. The Phase II program will incorporate the membrane into a multicell electrodialysis system to test with industrial effluents. The electrodialysis cell with the new membrane will permit efficient and complete removal of toxic metals from industrial wastewater and concentrate them for reuse or disposal. Commercial applications include treatment of wastewater rinses from electroplating baths, tanning effluents, and metal finishing processes and recovery of strategic metals.

95-61754 Rose 这个小企业创新研究第一阶段项目将评估一个多室电渗析池，使用一种新的阴离子交换膜分离和回收污染废水中的金属。最初的应用将是从电镀和金属精加工浴中回收铬，这是环境和经济方面的问题。监管标准越来越严格，回收和再循环金属将节省大量资金。使用膜进行过滤和浓缩是解决这一问题的一种有前途的方法，因为它们在低温下操作，不产生新的废物，并且能够处理大量的废物。拟议的电池将允许同时去除六价铬和三价铬的废物流。在第一阶段计划中，将合成一种具有高耐化学性的新膜，这种膜比全氟膜便宜。它的化学稳定性和电性能将被测量，并与目前可用的膜进行比较。该膜将被纳入一个三室，实验室规模的电渗析池，以证明有效地去除有毒金属阳离子和六价铬。第二阶段的计划将把膜到一个多细胞电渗析系统测试与工业废水。 具有新膜的电渗析池将允许从工业废水中有效和完全去除有毒金属，并将其浓缩以供再利用或处置。商业应用包括处理电镀槽、制革废水和金属精加工过程中的废水冲洗液以及战略金属的回收。