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Innovative Applications of Hot ISCO For In-Situ and Ex-Situ Destruction of PFAS
July 10 @ 12:30 pm - 1:30 pm EDT
Overview
Join us on July 10, 2024 for a technical webinar regarding Innovative Applications of Hot ISCO For In-Situ and Ex-Situ Destruction of PFAS!
Presentation Description
Background/Objectives
Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals widely used in the consumer product stream since the 1950s, and PFAS molecules are very persistent and difficult to address in natural media. As a result, PFAS are contaminants of concern globally, appearing on tens of thousands of sites and effecting all industries. Currently, there are no widely available remedial technologies that have been demonstrated to destroy PFAS in-situ, and destructive ex-situ options are limited to high-cost solutions oriented toward high-concentration waste streams.
Approach/Activities
We developed an innovative patent-pending means to destroy PFAS in soil and groundwater in in-situ and ex-situ settings by combining a small temperature rise, a metals-based catalyst, and off-the-shelf oxidant products. This methodology has been demonstrated to degrade PFAS to non-toxic end products (fluoride, salts, and carbon dioxide). Parsons developed this technology through several years of laboratory work, two years of field pilots, and approximately 34 individual lab and field trials.
Results/Lessons Learned
Hot In-Situ Chemical Oxidation (Hot ISCO) achieved PFAS destruction efficiencies in the laboratory of greater than 99.9% within method detection limits, and greater than 90% destruction efficiency during large-volume mixed matrix ex-situ field trials. Laboratory and field ex-situ demonstrations across a wide variety of groundwater and soil conditions, PFAS mixes, and co-contaminants have yielded a tremendous collection of lessons learned and a much deeper understanding of PFAS destruction mechanisms.
Presenters
Dan Griffiths, PG, CPG: Dan is a vice president and innovation and technology director at Parsons. He has 28 years of experience specializing in complex environmental site investigations and remediation. He is a registered geologist and a Parsons Fellow.
To Join The Webinar
Join on your computer or mobile app:
Audio Phone: +1 951-465-7634 | Phone Conference ID: 262 467 61#
Video: Click here to join the meeting
Please visit the Parsons YouTube channel for video recordings of previous technical webinars.