BEGIN:VCALENDAR VERSION:2.0 METHOD:PUBLISH PRODID:-//Tendenci - The Open Source AMS for Associations//Tendenci Codeba se MIMEDIR//EN BEGIN:VEVENT DESCRIPTION:--- This iCal file does *NOT* confirm registration.\r\nEvent d etails subject to change. ---\r\nhttps://www.grac.org/events/134/\r\n\r\nE vent Title: GRACast: Remediation of Poly-and Perfluoroalkyl Contaminants U sing In Situ Chemical Oxidation: A Laboratory Study\r\nStart Date / Time: Sep 27, 2017 12:00 PM US/Pacific\r\nLocation: \r\nPresented by:\r\nTom Bru ton, Ph.D. Green Science Policy Institute\r\n \r\nThe use of aqueous film- forming foams (AFFF) for extinguishing flammable liquid fires has led to c ontamination of groundwater with poly- and perfluoroalkyl substances (PFAS s). Sorption to activated carbon is the current presumptive remedy for PF AS contamination, but in situ chemical oxidation (ISCO) has also received attention as a possible treatment strategy because of its potential to min eralize, rather than sequester, these compounds. This presentation will d escribe research that investigated the fate of different PFASs under condi tions intended to simulate subsurface treatment using chemical oxidants. L aboratory experiments were performed by amending solutions of PFOA or PFOS with either Fenton&rsquo\;s reagent or heat-activated persulfate. Of the se two treatments, only heat-activated persulfate effectively transformed PFOA, and its efficacy was related to solution pH. Neither treatment resu lted in transformation of PFOS. Heat-activated persulfate experiments wer e also carried out using samples of AFFF from two manufacturers. In exper iments using fluorotelomer-based AFFF, full removal was observed for the p rimary PFAS component, 6:2 fluorotelomer thioether amido sulfonate (6:2 Ft TAoS). 6:2 FtTAoS was transformed into a suite of perfluorinated carboxyl ates with varying fluorocarbon chain length. During oxidative treatment o f perfluorooctane sulfonyl-fluoride based AFFF, perfluorinated sulfonate c omponents were unaffected, but sulfonamide-based polyfluorinated compounds were transformed into perfluorinated carboxylates. Heat activated persulf ate treatment carried out at low pH may be a feasible remedial strategy fo r groundwater impacted by polyfluorinated compounds and perfluorocarboxyla tes. \r\n \r\n*Early Registration (September 21) is $75 for Members* and $100 for Non-Members**Registration after September 21 is $100 for Members* and $125 for Non-Members* \r\nSPEAKER BIO:\r\n\r\nDr. Tom Bruton recently received his Ph.D. from the Department of Civil and Environmental Enginee ring at UC Berkeley, where his dissertation research explored using chemic al oxidation to degrade poly- and perfluoroalkyl substances (PFASs) in the context of groundwater remediation. Prior to that, Tom received his bach elor&rsquo\;s and master&rsquo\;s degrees from Iowa State University and A rizona State University, respectively, and worked as an environmental engi neering consultant.\r\nIn February of this year, Tom joined the Green Scie nce Policy Institute, as the Institute&rsquo\;s first Science and Policy F ellow. In his work at GSPI, Tom collaborates with partners in business, g overnment, NGOs, and academia to promote the responsible use of PFASs and other chemical classes of concern in products.\r\n \r\nMODERATOR BIO:\r\n\ r\nErika Houtz, PhD, PFAS Analytical Lead\r\nDr. Houtz has eight years of academic and professional experience investigating the environmental impac ts of PFAS. She has extensive experience in developing analytical and expe rimental methods for the measurement of PFAS in environmental and human sa mples. She has also investigated and published on the fate and transport o f PFAS in natural and engineered systems, with a particular emphasis on th e fate of PFAS found in aqueous film forming foams. Since joining Arcadis in 2016, she has been engaged in numerous PFAS projects, including develop ing guidance for site characterization, developing conceptual site models at contaminated sites, evaluating the efficacy of treatment technologies, working with laboratories to commercialize new PFAS analysis techniques, a nd tracking of the evolving PFAS regulatory landscape in the U.S. and glob ally.--- This iCal file does *NOT* confirm registration.Event details subj ect to change. ---\r\n\r\n--- By Tendenci - The Open Source AMS for Associ ations ---\r\n UID:uid134@grac.org SUMMARY:GRACast: Remediation of Poly-and Perfluoroalkyl Contaminants Using In Situ Chemical Oxidation: A Laboratory Study DTSTART:20170927T190000Z DTEND:20170927T200000Z CLASS:PUBLIC PRIORITY:5 DTSTAMP:20240329T071106Z TRANSP:OPAQUE SEQUENCE:0 X-ALT-DESC;FMTTYPE=text/html:
Presented by:
Tom Bruton, Ph.D. \;
Green Science Policy Institut
e
 \;
The use of a queous film-forming foams (AFFF) for extinguishing flammable liquid fires has led to contamination of groundwater with poly- and perfluoroalkyl subs tances (PFASs). \; Sorption to activated carbon is the current presump tive remedy for PFAS contamination, but in situ chemical oxidation (ISCO) has also received attention as a possible treatment strategy because of it s potential to mineralize, rather than sequester, these compounds. \; This presentation will describe research that investigated the fate of dif ferent PFASs under conditions intended to simulate subsurface treatment us ing \;chemical oxidants. \;Laboratory experiments were performed b y amending solutions of PFOA or PFOS with either Fenton&rsquo\;s reagent o r heat-activated persulfate. \; Of these two treatments, only heat-act ivated persulfate effectively transformed PFOA, and its efficacy was relat ed to solution pH. \; Neither treatment resulted in transformation of PFOS. \; Heat-activated persulfate experiments were also carried out u sing samples of AFFF from two manufacturers. \; In experiments using f luorotelomer-based AFFF, full removal was observed for the primary PFAS co mponent, 6:2 fluorotelomer thioether amido sulfonate (6:2 FtTAoS).  \; 6:2 FtTAoS was transformed into a suite of perfluorinated carboxylates wit h varying fluorocarbon chain length. \; During oxidative treatment of perfluorooctane sulfonyl-fluoride based AFFF, perfluorinated sulfonate com ponents were unaffected, but sulfonamide-based polyfluorinated compounds w ere transformed into perfluorinated carboxylates. \;Heat activated per sulfate treatment carried out at low pH may be a feasible remedial strateg y for groundwater impacted by polyfluorinated compounds and perfluorocarbo xylates.  \;
 \;
*Early Registration (September 21) is $75 for Members* and $100 for Non-Me
mbers*
*Registration after September 21 is $100 for Members* and $125
for Non-Members*
Dr. Tom Bruton recently received his Ph.D. from the Department of Civil and Environmental Engineering at UC Ber keley, where his dissertation research explored using chemical oxidation t o degrade poly- and perfluoroalkyl substances (PFASs) in the context of gr oundwater remediation. \; Prior to that, Tom received his bachelor&rsq uo\;s and master&rsquo\;s degrees from Iowa State University and Arizona S tate University, respectively, and worked as an environmental engineering consultant.
In February of this year, Tom joined the Green Science Policy Institute, as the Institute&rsquo\;s first Science and Policy Fello w. \; In his work at GSPI, Tom collaborates with partners in business, government, NGOs, and academia to promote the responsible use of PFASs an d other chemical classes of concern in products.
 \;
Erika Houtz, PhD, PF AS Analytical Lead
Dr. Houtz has eight years of academic a nd professional experience investigating the environmental impacts of PFAS . She has extensive experience in developing analytical and experimental m ethods for the measurement of PFAS in environmental and human samples. She has also investigated and published on the fate and transport of PFAS in natural and engineered systems, with a particular emphasis on the fate of PFAS found in aqueous film forming foams. Since joining Arcadis in 2016, s he has been engaged in numerous PFAS projects, including developing guidan ce for site characterization, developing conceptual site models at contami nated sites, evaluating the efficacy of treatment technologies, working wi th laboratories to commercialize new PFAS analysis techniques, and trackin g of the evolving PFAS regulatory landscape in the U.S. and globally.
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