Collaborative Research: Fundamental studies of porous polymers for selective gold retrieval

合作研究：用于选择性金回收的多孔聚合物的基础研究

• 批准号: 2315087
• 负责人: Xiaobo Chen
• 金额: $ 45万
• 依托单位: University of Missouri-Kansas City
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2315087&HistoricalAwards=false
• 关键词: Collaborative; Research; Fundamental; studies; porous

Investigators at the University of Missouri – Kansas City (UMKC) and Southern Methodist University (SMU) will investigate how to retrieve gold ions from waste streams using porous polymers. Recovering gold from electronic waste (e-waste) has significant environmental and financial benefits. The global e-waste recycling market reached around $55.3 billion in 2022, with gold recovery accounting for the most value. Adsorption technology is regarded as a highly effective, simple, economical, and environmentally benign separation method. However, current adsorption-based gold recovery technology suffers from low adsorption capacity, slow adsorption rates, and low selectivity. This project will develop adsorbents for the effective and efficient recovery of gold and other metal ions essential for rechargeable battery applications, promoting the United States’ global leadership in the energy and defense sectors. This project supports the interdisciplinary training of graduate and undergraduate students. The investigators have partnered with UMKC’s Multicultural Student Affairs Office and SMU’s Engaged Learning, McNair Scholars, and Hamilton Undergraduate Research Scholars programs to recruit students from underrepresented and underserved groups in STEM. The research results will be broadly disseminated in peer-reviewed journals, conferences, and online outlets. Systematic experimental and theoretical studies will be conducted to gain fundamental insights into the interactions between gold ions and novel adsorbents based on intrinsically porous triazine-crosslinked polyethyleneimine (TCPEI) networks. Four research tasks will be completed: (1) design and synthesize three series of TCPEIs with dramatically different distributions of the various types of amine nitrogen; (2) experimentally and theoretically study the gold ion adsorption capacities and energies of the three sets of TCPEIs; (3) experimentally and theoretically determine adsorption and desorption kinetics; and (4) explore the gold adsorption selectivity of TCPEIs over other metal ions commonly found in e-waste such as lead, mercury, nickel, cobalt, manganese, cadmium, chromium, iron, and copper. The research is expected to lead to advanced adsorption-based gold recovery technology. The fundamental knowledge gained through this study may also be applied to develop adsorbents for other metal ions, including critical metals. The graduate and undergraduate student researchers will be trained to synthesize these unique polymers, measure and characterize the polymers’ metal ion adsorption properties, and perform theoretical studies to understand adsorption processes and polymer properties.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

密苏里大学 - 堪萨斯城（UMKC）和南方卫理公会大学（SMU）的调查人员将调查如何使用多孔聚合物从废物流中检索金离子。从电子废物（电子废物）中恢复黄金具有巨大的环境和经济利益。全球电子废物回收市场在2022年达到了553亿美元，其价值最高。吸附技术被认为是一种高效，简单，经济和环保分离方法。但是，当前基于吸附的黄金恢复技术患有低吸附能力，缓慢的吸附率和低选择性。该项目将开发吸附剂，以有效，有效地恢复对可充电电池应用必不可少的黄金和其他金属离子，从而促进美国在能源和国防领域的全球领导。该项目支持研究生和本科生的跨学科培训。调查人员与UMKC的多元文化学生事务办公室以及SMU的学习，麦克奈尔学者和汉密尔顿大学生研究学者计划合作，以招募STEM中代表性不足和服务不足的团体的学生。研究结果将在经过同行评审的期刊，会议和在线渠道中广泛传播。将进行系统的实验和理论研究，以基于基于本质上多孔的三嗪交联聚乙胺（TCPEI）网络，对金离子和新型吸附剂之间的相互作用进行基本见解。将完成四项研究任务：（1）设计和合成三个系列的TCPEI，具有各种类型的胺氮的动态分布； （2）在实验和理论研究中，三组TCPEI的金离子吸附能力和能量； （3）在实验和理论上确定的吸附和解吸动力学； （4）探索TCPEI的黄金吸附选择性比铅，水星，镍，钴，锰，镉，铬，铬，铁和铜等电子废物中常见的其他金属离子的黄金吸附选择性。该研究有望导致基于吸附的高级金恢复技术。通过这项研究获得的基本知识也可以用于开发其他金属离子（包括关键金属）的吸附剂。研究生和本科生的研究人员将接受培训，以合成这些独特的聚合物，衡量和表征聚合物的金属离子吸附特性，并进行理论研究以了解吸附过程和聚合物的特性。该奖项反映了NSF的法定任务，并通过使用基金会的智力来评估了cripitial crcritial and crotial and crotia and througial and crotia and crarit和广泛的支持。