eMinus LLC
- Environmental Engineering and Consulting Services for Government and Commercial Clients
- Engineers, Geologists, Environmental Scientists, and Construction Managers with over 125 years of combined experience
- Experts in Chemical Oxidation and Bioremediation Implementation
- Worldwide Experience on over 500 projects
- Specialized Expertise in Solving Environmental Issues Associated with Oil and Gas Development
- Innovative Treatment Solutions for PFAS (per- and polyfluoroalkyl substances)
Environmental Assessment and Remediation:
Chemical Oxidation and Reduction. Aerobic and Anaerobic Biological Treatment. Surfactant Injection.
Air Sparge/Soil Vapor Extraction. Green and Sustainable Technologies. Site Assessment. Well Installation.
Environmental Services:
Treatability Studies. Technology Evaluation. Pilot Tests. System Design. Installation. O&M. Site Closure.
Chemical Oxidation and Reduction. Aerobic and Anaerobic Biological Treatment. Surfactant Injection.
Air Sparge/Soil Vapor Extraction. Green and Sustainable Technologies. Site Assessment. Well Installation.
Environmental Services:
Treatability Studies. Technology Evaluation. Pilot Tests. System Design. Installation. O&M. Site Closure.
Innovative Treatment Solutions for PFAS
Since 2015, eMinus LLC has been researching and developing innovative solutions for PFAS contamination in soil, water, and groundwater. These efforts resulted in an in-situ remediation technology: D-FAS. This patented technology (U.S. 10,752,521) exploits the physical properties of PFAS to partition from water and accumulate at air/water interfaces. This creates a concentrated PFAS foam which is removed from the subsurface, condensed, and treated on or off-site. The D-FAS platform includes foam fractionation, redox/geochemical manipulation, groundwater recirculation, VOC removal, bioremediation enhancement, and ISCO for precursor conversion.
D-FAS was successfully demonstrated and evaluated under ESTCP DEM/VAL project ER-19-5075. This project showed that D-FAS is capable of removing high levels of PFAS mass from AFFF source areas. It is also effective in removing PFAS mass from down-gradient areas. A total of 107 g of total PFAS was removed from the site after 3 months of operations using two treatment wells. This total included 47 g of PFOS which compares favorably to the initial PFOS mass of 54 g as measured by groundwater and soil samples.
Since 2015, eMinus LLC has been researching and developing innovative solutions for PFAS contamination in soil, water, and groundwater. These efforts resulted in an in-situ remediation technology: D-FAS. This patented technology (U.S. 10,752,521) exploits the physical properties of PFAS to partition from water and accumulate at air/water interfaces. This creates a concentrated PFAS foam which is removed from the subsurface, condensed, and treated on or off-site. The D-FAS platform includes foam fractionation, redox/geochemical manipulation, groundwater recirculation, VOC removal, bioremediation enhancement, and ISCO for precursor conversion.
D-FAS was successfully demonstrated and evaluated under ESTCP DEM/VAL project ER-19-5075. This project showed that D-FAS is capable of removing high levels of PFAS mass from AFFF source areas. It is also effective in removing PFAS mass from down-gradient areas. A total of 107 g of total PFAS was removed from the site after 3 months of operations using two treatment wells. This total included 47 g of PFOS which compares favorably to the initial PFOS mass of 54 g as measured by groundwater and soil samples.
