GSI Conducts First Field Demonstration of the Sonolysis Technology for PFAS Treatment

As part of a Navy research project, GSI Environmental recently completed the first field demonstration of an integrated Pilot-Scale Sorbent and Sonolysis System housed in a mobile-trailer for the treatment of groundwater containing per and polyfluoroalkyl substances (PFAS).

 The field demonstration was successfully conducted at a Navy base and is part of ongoing Navy efforts to improve current assessment and treatment approaches for PFAS- impacted groundwater. The integrated Pilot-Scale System consisted of a sorptive phase (using polymer-modified granular activated carbon (GAC)) and a destructive phase (sonolysis unit) in parallel:

  • GAC removes PFAS in groundwater by via adsorption; and
  • Sonolysis technology destroys PFAS by concentrating these compounds at the bubble-liquid interface. Bubble cavitation occurs at that interface, generating high-temperature pyrolysis that then destroys PFAS, requiring no additional chemicals or waste.

The application of the sonolysis technology, in particular, is the first-known operation in a field (i.e., non-laboratory) setting. During the field demonstration, hundreds of gallons of PFAS-impacted groundwater were treated, and various operating conditions were tested to optimize the efficiency of the Sorbent-Sonolysis treatment system unit.

Key GSI team members include:
·         Dr. David Adamson (PI);
·         Dr. Stephen Richardson (Co-PI);        
·         Poonam Kulkarni (Co-PI and Lead Design Engineer);
·         Dr. Blossom Nzeribe (Field Technical Engineer Lead); and
·         Clay Sorensen (Field Geologist).

Additionally, GSI collaborated with the following to transition the technology from the laboratory to field-scale implementation:
·       Dr. Jovan Popovic (Navy)
·       Dr. Shaily Mahendra and team (University of California, Los Angeles)
·       Dr. Jens Blotevogel (Colorado State University)
·       Sharyl Maraviov (PCT Systems Inc)
·       Randy Bindas, Kate Bindas, and Chris Joyal (National Environmental Systems)

For more information on GSI’s involvement in this project, please contact: David Adamson (This email address is being protected from spambots. You need JavaScript enabled to view it.), Stephen Richardson (This email address is being protected from spambots. You need JavaScript enabled to view it.) or Poonam Kulkarni (This email address is being protected from spambots. You need JavaScript enabled to view it.).