NTE Phase II Proposal: Removal of Toxic Metal Ions from Contaminated Water by Dendrimer Enhanced Ultrafiltration

NTE 第二阶段提案：通过树枝状聚合物增强超滤去除污染水中的有毒金属离子

• 批准号: 0329436
• 负责人: Mamadou Diallo
• 金额: $ 18万
• 依托单位: Howard University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-15 至 2006-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0329436&HistoricalAwards=false
• 关键词: NTE; Phase; II; Proposal; Removal

The objective of this collaborative proposal is to perform an integrated experimental and multi-scale modeling project to optimize the operation of a continuous bench-scale dendrimer enhanced ultrafiltration (DEUF) system for recovering metal ions from aqueous solutions. The focus will be on commercially available ethylene diamine (EDA) core, poly(amidoamine) PAMAM dendrimers as functional materials for DEUF-based processes for recovering metal ions from industrial wastewater streams. Research activities will involve (i) measurements and molecular dynamics simulations of proton and metal ion binding to dendrimers in aqueous solutions, (ii) experimental characterization and mesoscale simulations of dendrimer sorption to polymeric ultrafiltration membranes, and (iii) evaluation and optimization of a bench-scale DEUF system. The fundamental mechanisms of proton and metal ion binding in aqueous solutions of dendrimers will be probed through a combination of experimental measurements and molecular dynamics simulations. In terms of the broader impacts, the project will provide educational opportunities at an HBCU. DEUF has the potential to recover toxic metal ions from contaminated public water supplies.

该合作提案的目标是执行一个集成的实验和多尺度建模项目，以优化连续实验规模树状聚合物增强超滤（DEUF）系统的操作，用于从水溶液中回收金属离子。重点将放在商业上可用的乙二胺（EDA）核心，聚（氨基胺）PAMAM树状大分子上，作为从工业废水流中回收金属离子的基于deuf的工艺的功能材料。研究活动将包括(i)水溶液中质子和金属离子与树状大分子结合的测量和分子动力学模拟，（ii）树状大分子吸附到聚合物超滤膜上的实验表征和中尺度模拟，以及（iii）实验规模DEUF系统的评估和优化。本文将通过实验测量和分子动力学模拟相结合的方法来探讨树状大分子水溶液中质子和金属离子结合的基本机制。就更广泛的影响而言，该项目将在HBCU提供教育机会。DEUF具有从受污染的公共供水中回收有毒金属离子的潜力。