Colorado School of Mines
Charlie Liu is a PhD candidate at the Colorado School of Mines advised by Dr. Christopher Bellona and Dr. Timothy Strathmann. His research focuses on remediation of per- and polyfluoroalkyl substances (PFASs) using granular activated carbon, ion exchange, high-pressure membranes, and UV destructive technologies in studies that seek to bridge the gap between academic research and practical application.
Performance and Cost-Effectiveness of Novel PFAS Removal Technologies
Per- and polyfluoroalkyl substances (PFAS) are emerging contaminants in numerous aquatic systems across the United States and around the world. Concerns about PFAS have increased due to their relatively common occurrence in the environment, recalcitrance in treatment and associated human health concerns. While there are currently no Maximum Contaminant Limits (MCLs) established for PFAS chemicals, social awareness has motivated the Department of Defense, manufacturing companies, and water providers alike to address the presence of these contaminants in the environment and drinking water. As PFAS are being detected in finished tap waters throughout the U.S., advanced treatment techniques, with the ability to remove these chemicals are being implemented to reduce exposure pathways. The complexity and costs associated with treating these contaminants are barriers for widespread implementation of a remedial practice. Consequently, the goals of this study were to review previous bench and pilot scale studies, determine the performance of a novel adsorptive media in a bench-scale column experiment, and develop a decision support tool that incorporates performance and cost of each proposed treatment strategy. The results presented are the culmination of the presenter's undergraduate and MS-thesis research in the Bellona Lab Group at Colorado School of Mines.