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Field Demonstration of PFAS Destruction in Various Alcohol-Resistant AFFFs Using Supercritical Water Oxidation (SCWO)
https://orcid.org/0000-0002-9620-6550
https://orcid.org/0000-0001-8180-7217
Aqueous film-forming foams (AFFFs) have been used for over 60 years to control dangerous Class B fires, but their firefighting efficacy is owed to per- and poly fluoroalkyl substances (PFAS), which have emerged as concerning persistent contaminants for the environment and human health. Battelle’s PFAS Annihilator, a supercritical water oxidation (SCWO) technology, demonstrated ≥3 log destruction of PFAS in each of the three alcohol-resistant AFFF formulations from different manufacturers. A comparison between dilutions (6–16%) ranging from 1.9 to 64 ppm PFAS similarly demonstrated >99.9% destruction for all AFFF dilutions. Minimal reactor corrosion is indicated based on the reactor metals’ concentrations measured in the effluent, amounting to just 0.0004% (∼83 mg) wall loss per hour of operation. A similar approach estimates the formation of ∼3.1 g of precipitated salts in the reactor per hour of operation. A fluorine mass balance yielded 40% excess fluorine in the effluent compared to the influent, indicating a lot of unquantifiable nontarget PFAS precursors in the AFFF formulations. SCWO’s economic efficiency is demonstrated to be dependent on the volume of fluid processed, not upon the PFAS concentration or formulation chemistries, suggesting that the SCWO technology would be even more economical for highly contaminated streams.
Aqueous film-forming foams are composed of per- and polyfluoroalkyl substances that do not degrade and have known impacts on human and environmental health. This study presents the PFAS Annihilator, which rapidly destroys 99.9% of PFAS in these highly concentrated AFFF matrices.
Field Demonstration of PFAS Destruction in Various Alcohol-Resistant AFFFs Using Supercritical Water Oxidation (SCWO)
https://orcid.org/0000-0002-9620-6550
https://orcid.org/0000-0001-8180-7217
Aqueous film-forming foams (AFFFs) have been used for over 60 years to control dangerous Class B fires, but their firefighting efficacy is owed to per- and poly fluoroalkyl substances (PFAS), which have emerged as concerning persistent contaminants for the environment and human health. Battelle’s PFAS Annihilator, a supercritical water oxidation (SCWO) technology, demonstrated ≥3 log destruction of PFAS in each of the three alcohol-resistant AFFF formulations from different manufacturers. A comparison between dilutions (6–16%) ranging from 1.9 to 64 ppm PFAS similarly demonstrated >99.9% destruction for all AFFF dilutions. Minimal reactor corrosion is indicated based on the reactor metals’ concentrations measured in the effluent, amounting to just 0.0004% (∼83 mg) wall loss per hour of operation. A similar approach estimates the formation of ∼3.1 g of precipitated salts in the reactor per hour of operation. A fluorine mass balance yielded 40% excess fluorine in the effluent compared to the influent, indicating a lot of unquantifiable nontarget PFAS precursors in the AFFF formulations. SCWO’s economic efficiency is demonstrated to be dependent on the volume of fluid processed, not upon the PFAS concentration or formulation chemistries, suggesting that the SCWO technology would be even more economical for highly contaminated streams.
Aqueous film-forming foams are composed of per- and polyfluoroalkyl substances that do not degrade and have known impacts on human and environmental health. This study presents the PFAS Annihilator, which rapidly destroys 99.9% of PFAS in these highly concentrated AFFF matrices.
Field Demonstration of PFAS Destruction in Various Alcohol-Resistant AFFFs Using Supercritical Water Oxidation (SCWO)
https://orcid.org/0000-0002-9620-6550
https://orcid.org/0000-0001-8180-7217
Aqueous film-forming foams (AFFFs) have been used for over 60 years to control dangerous Class B fires, but their firefighting efficacy is owed to per- and poly fluoroalkyl substances (PFAS), which have emerged as concerning persistent contaminants for the environment and human health. Battelle’s PFAS Annihilator, a supercritical water oxidation (SCWO) technology, demonstrated ≥3 log destruction of PFAS in each of the three alcohol-resistant AFFF formulations from different manufacturers. A comparison between dilutions (6–16%) ranging from 1.9 to 64 ppm PFAS similarly demonstrated >99.9% destruction for all AFFF dilutions. Minimal reactor corrosion is indicated based on the reactor metals’ concentrations measured in the effluent, amounting to just 0.0004% (∼83 mg) wall loss per hour of operation. A similar approach estimates the formation of ∼3.1 g of precipitated salts in the reactor per hour of operation. A fluorine mass balance yielded 40% excess fluorine in the effluent compared to the influent, indicating a lot of unquantifiable nontarget PFAS precursors in the AFFF formulations. SCWO’s economic efficiency is demonstrated to be dependent on the volume of fluid processed, not upon the PFAS concentration or formulation chemistries, suggesting that the SCWO technology would be even more economical for highly contaminated streams.
Aqueous film-forming foams are composed of per- and polyfluoroalkyl substances that do not degrade and have known impacts on human and environmental health. This study presents the PFAS Annihilator, which rapidly destroys 99.9% of PFAS in these highly concentrated AFFF matrices.
Field Demonstration of PFAS Destruction in Various Alcohol-Resistant AFFFs Using Supercritical Water Oxidation (SCWO)
Rosansky, Stephen (author) / Al-Dirani, Samer Mohamad (author) / Scheitlin, Christopher G (author) / Dasu, Kavitha (author) / Dzurnak, Michael (author) / Xia, Xiaoyan (author) / Orth, Cameron (author) / McCauley, Martha (author) / Mullins, Larry (author)
ACS ES&T Water ; 4 ; 4486-4496
2024-10-11
Article (Journal)
Electronic Resource
English
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