PENINSULA POST

PFAS CORNER

UPDATES & QUICK LINKS

 

SAME VPP HAS A NEW IN PERSON MEETING LOCATION at the Newport News Brooks Crossing Innovation Center & Lab         550 30th St, Newport News

 

 

D-FAS:  Low Cost In-situ PFAS Remediation Technology

On August 26, 2022, EPA proposed to designate two of the most widely used per- and polyfluoroalkyl substances (PFAS) as hazardous substances under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), also known as Superfund.  The proposal applies to perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), including their salts and structural isomers, and is based on significant evidence that PFOA and PFOS may present a substantial danger to human health or welfare or the environment. 

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 that 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.

DEMONSTRATION

D-FAS in-situ remediation was successfully demonstrated and evaluated under ESTCP DEM/VAL project ER-19-5075. This project showed that D-FAS can remove high levels of PFAS mass from AFFF source areas. It is also effective in removing PFAS mass from down-gradient areas.

 

BACKGROUND

 

The pilot study was conducted at a fire station with historical AFFF use. The pilot area was approximately 1200 ft2 in size.  The target for treatment was a sandy aquifer with a two-foot clay layer located near the groundwater interface. The local rainfall was seasonally normal and consisted of frequent downpours exceeding 1-2 inches in a 24-hour period.

Register Here:  

When: Jan 17, 2023 12:00 PM Eastern Time (US and Canada) 

Register in advance for this meeting:
https://us02web.zoom.us/meeting/register/tZ0qfumgrD4pHtFRj9fBOVDtHL-1zgT8PSaY 

After registering, you will receive a confirmation email containing information about joining the meeting.

 

 CALENDAR OF EVENTS

4/14/2023 9:00 AM 4/14/2023 6:30 PM VPPJOINT FUNDRAISER GOLF WITH AFCEA