讲座题目：Forever No More: Introduction of an Innovative Technology for Destruction PFAS “Forever Chemicals”
主讲人：Timothy Strathmann Professor
主持人：关小红 教授
开始时间：2023-04-07（周五）上午8:30-10:00
会议平台：腾讯会议
会议ID：515-373-160 （密码111222)
主办单位：生态与环境科学学院、科技处
报告人简介：
Timothy Strathmann is a Professor and the Associate Head of the Department Civil and Environmental Engineering at the Colorado School of Mines. His research aims to develop more sustainable technologies for water treatment and waste valorization. Most recently, his research program has focused developing innovative technologies for treatment of per- and polyfluoroalkyl substances (PFAS), including being the lead inventor of the hydrothermal alkaline treatment technology for PFAS (HALT-PFAS). Dr. Strathmann is the recipient of a National Science Foundation CAREER Award, and his research has been sponsored by DoD-SERDP/ESTCP, NSF, USEPA, USDA, SRC, and DOE. Dr. Strathmann’s formal training includes a PhD in environmental engineering from Johns Hopkins, BS and MS degrees from Purdue, and postdoctoral training at Princeton.
报告内容简介:
This presentation will describe recent work at the Colorado School of Mines leading to the introduction of a new technology for complete destruction of per- and polyfluoroalkyl substance (PFAS) “forever chemicals”. The critical importance of technologies for cost-effective destruction of PFAS is growing due to their recent designation as hazardous substances under CERCLA and impending federal drinking water regulations. The technology we introduced, Hydrothermal ALkaline Treatment (HALT), applies elevated temperatures (250 – 350 C) to liquid water or wet solid mixtures amended with low-cost alkali (e.g., NaOH) to promote rapid defluorination and destruction of PFAS. HALT is ideal for treating high moisture content wastes (e.g., water, wet soils, biosolids) contaminated with PFAS because input energy requirements are much lower than for competing thermochemical technologies (e.g., incineration, gasification) because volatilization of water is avoided. This presentation will discuss research showing treatment of a wide range of PFASs identified in aqueous film-forming foam (AFFF) and AFFF-impacted water and soil samples, as well as liquid and solid concentrate wastes derived from other treatment processes. This will include evidence obtained from high resolution mass spectrometry (HRMS), nuclear magnetic resonance (19F-NMR) spectroscopy, and fluoride ion analysis. I will also discuss ongoing efforts to commercialize HALT with industry partners.
