Title: High-Value Resource Recovery Technology and Environmental Impact Assessment of ElectronicWaste: Case Study of Waste LCDs and Retired Lithium Batteries
Time: June 28, 2023 (Wednesday) 9:00-11:00
Venue: Guanyun Building 1009
Reporter Profile:
Dr. Cui Jiaying, female, born in September 1992. Postdoctoral researcher and assistant researcher at the School of Environment, Tsinghua University. Her research focuses on solid waste management and resource recovery technology. She has published as the first author in journals such as Environmental Science & Technology, Science of The Total Environment, Resources Conservation and Recycling, ACS Sustainable Chemistry & Engineering, and Chemical Engineering Journal. She has led projects funded by the National Natural Science Foundation of China (Youth Fund), China Postdoctoral Science Foundation, and the Key Laboratory of Solid Waste Pollution Control and Resource Reuse in Guangdong Province. She has received awards such as the National Scholarship, the Third Prize in the "Challenge Cup" National College Student Extracurricular Academic and Technological Works Competition, and the opportunity to be funded by the China Scholarship Council for joint training at Duke University in the United States.
Report summary: Electronic products come in various types, and the amount of electronic waste continues to rise. Liquid crystal displays (LCDs) are widely used in common electronic products such as smartphones, laptops, televisions, and solar control panels. The indium consumed in the production of ITO electrodes in LCDs accounts for approximately 90% of the total indium resource consumption. Therefore, it is necessary and urgent to recover indium from waste LCDs. Currently, the key issues in the recovery of indium from waste LCDs are too high costs and too low product value, which are common problems in the resource recovery process of electronic waste. In addition, electronic waste recycling technologies also have negative environmental impacts. Lithium-ion batteries in new energy vehicles will be retired when their capacity drops to 80%, and their recycling pathways include cascaded utilization and dismantling and recycling. Considering the environmental burden caused by the degradation of battery performance and the excessive use of batteries, it is important to assess the environmental benefits of battery cascaded utilization. This report takes waste LCDs and retired lithium batteries as examples and focuses on the green and efficient leaching technology of indium, the high-value resource recovery system of biogenic nanoparticles, and the environmental benefit assessment of lithium battery cascaded utilization.
College of Earth and Environmental Sciences
June 27, 2023
