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这个小型企业创新研究阶段I项目将使用新的阴离子交换膜评估多室电透析细胞，以分离和回收受污染的废水中金属的分离和回收。最初的应用将用于从镀铬和金属饰面浴中恢复铬，这既是环境和经济关注的问题。监管标准越来越严格，由于金属的恢复和回收利用会产生大量节省。将膜用于过滤和浓度是解决该问题的一种有前途的方法，因为它们在低温下运行，不会产生新的废物，并且能够处理大量的量。提出的细胞将允许同时从废物流中去除六价和三价铬。在第一阶段计划中，将合成具有高化学耐药性的新膜，比全氟化膜便宜。将测量其化学稳定性和电性能与当前可用的膜。该膜将掺入一个三室实验室尺度的电透析细胞中，以证明有效去除有毒金属阳离子和六价铬。 II期计划将将膜结合到多细胞电透析系统中，以使用工业废水进行测试。 带有新膜的电透析细胞将允许从工业废水中有效并完全去除有毒金属，并将其集中到重复使用或处置。商业应用包括从电镀浴中对废水冲洗的处理，晒黑废水和金属饰面工艺以及战略金属的恢复。