Effectiveness of Colloidal Activated Carbon as an in-situ Treatment to Mitigate PFAS
Thursday, June 20, 2019: 9:45 a.m.
Scott Wilson
,
REGENESIS, San Clemente, CA
Kristen Thoreson, Ph.D
,
Research & Development, REGENESIS, San Clemente, CA
Patricia Lyman
,
Michigan Department of Military and Veterans Affairs, Michigan Department of Military and Veterans Affairs, Lansing, MI
The Michigan Department of Military and Veteran Affairs (DMVA) have been remediating chlorinated solvents impact in the site groundwater from historical operations at the Grayling Army Airfield facility since the 1990’s. In 2016, the DMVA became aware of the potential contamination of PFAS from historical operations. PFAS was found commingled with a chlorinated solvent plume that was migrating towards the property boundary. The DMVA reviewed potential remedial options to test in the field, but ultimately decided to test an
in-situ reactive barrier application of colloidal activated carbon, an approach that is first of its kind in the State of Michigan.
Colloidal activated carbon was selected because of the expected rapid reductions of PFAS by removal from the dissolved mobile phase and its expected lower total project costs. Colloidal activated carbon effectively increases the retardation factor of PFAS migration contaminants by multiple orders of magnitude and eliminates the exposure to down-gradient receptors.
This presentation will review the project design considerations, field activities, and post- application data. Additionally, the presentation will answer questions related to the distribution of the colloidal activated carbon in the subsurface and expected long-term efficacy at the site.
Scott Wilson, REGENESIS, San Clemente, CA
Scott Wilson is CEO of REGENESIS, a global leader in the development of technologies for the restoration of contaminated land. Patented technologies developed by REGENESIS have been used in the restoration of over 18,000 environmental project sites worldwide. The majority of Mr. Wilson’s 30 year career has focused on technology development/commercialization activities in the fields of microbial enhanced oil recovery, industrial wastewater, and environmental remediation. Prior to joining REGENESIS he held the position of Vice President of Remediation Technology at Groundwater Technology, Inc. where he was responsible for technology development and transfer throughout the global organization. For nearly a decade Mr. Wilson lectured on behalf of the National Water Well Association (now NGWA) on the topic of groundwater remediation. He remains a frequent contributor to conferences/symposia on topics related to innovative technologies. Mr. Wilson holds a M.S. in Applied Microbiology (related to geochemistry/petroleum engineering) from University Texas at El Paso, and a MBA from the Kellogg School at Northwestern University.
Kristen Thoreson, Ph.D, Research & Development, REGENESIS, San Clemente, CA
Dr. Kristen Thoreson leads the chemical research and product development program at REGENESIS. She is trained as a chemist, and her graduate and post-doctorate research focused on mechanistic investigations of chlorinated ethene degradation pathways using molecular models and compound specific isotope analysis (CSIA) for both biotic and abiotic systems. She obtained her BSc in chemistry from the University of Wisconsin – La Crosse, and her PhD in inorganic chemistry from the University of Minnesota. She also spent time as a postdoctoral associate at the Helmholtz Zentrum in Munich, Germany as a part of the Research Unit for Environmental Organic Isotope Chemistry.
Patricia Lyman, Michigan Department of Military and Veterans Affairs, Michigan Department of Military and Veterans Affairs, Lansing, MI
Investigation/Remediation Manager at Michigan Dept of Military and Veterans Affairs
