Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Field Demonstration of a Pilot-Scale Plasma Reactor for the Rapid Removal of Poly- and Perfluoroalkyl Substances in Groundwater
https://orcid.org/0000-0001-9599-6733
https://orcid.org/0000-0002-6371-4751
A pilot-scale plasma-based water treatment system containing two enhanced contact plasma reactors was deployed to a fire training area at Wright-Patterson Air Force Base to treat poly- and perfluoroalkyl substances (PFAS) in aqueous film-forming foam-impacted groundwater from two monitoring wells, wells B and C. Extracted water from both wells was treated through the plasma trailer in a semibatch mode at flow rates ranging from 2.4 to 8.4 L/min. Long-chain perfluoroalkyl acids (PFAAs; fluorocarbon chain of ≥6) and PFAS precursors were reduced by ≥90% for all flow rates in a single cycle through the reactors. Combined perfluorooctanoic acid and perfluorooctanesulfonic acid concentrations lower than the U.S. Environmental Protection Agency’s health advisory level of 70 ng/L were achieved in fewer than three cycles through the reactors. Short-chain PFAAs (fluorocarbon chain of ≤5) were removed to a lesser extent (0–95%) due to their generation during plasma treatment of long-chain PFAAs and PFAS precursors and limited accumulation at the plasma–liquid interface of the reactor. To improve the destruction of short-chain PFAAs, batch mode experiments were performed with the addition of a cationic surfactant (cetrimonium bromide), resulting in an 88% reduction of all short-chain PFAAs within 120 min of treatment.
This work demonstrates the first plasma-based water treatment technology to be deployed on site for direct nonthermal treatment of per- and polyfluoroalkyl substances.
Field Demonstration of a Pilot-Scale Plasma Reactor for the Rapid Removal of Poly- and Perfluoroalkyl Substances in Groundwater
https://orcid.org/0000-0001-9599-6733
https://orcid.org/0000-0002-6371-4751
A pilot-scale plasma-based water treatment system containing two enhanced contact plasma reactors was deployed to a fire training area at Wright-Patterson Air Force Base to treat poly- and perfluoroalkyl substances (PFAS) in aqueous film-forming foam-impacted groundwater from two monitoring wells, wells B and C. Extracted water from both wells was treated through the plasma trailer in a semibatch mode at flow rates ranging from 2.4 to 8.4 L/min. Long-chain perfluoroalkyl acids (PFAAs; fluorocarbon chain of ≥6) and PFAS precursors were reduced by ≥90% for all flow rates in a single cycle through the reactors. Combined perfluorooctanoic acid and perfluorooctanesulfonic acid concentrations lower than the U.S. Environmental Protection Agency’s health advisory level of 70 ng/L were achieved in fewer than three cycles through the reactors. Short-chain PFAAs (fluorocarbon chain of ≤5) were removed to a lesser extent (0–95%) due to their generation during plasma treatment of long-chain PFAAs and PFAS precursors and limited accumulation at the plasma–liquid interface of the reactor. To improve the destruction of short-chain PFAAs, batch mode experiments were performed with the addition of a cationic surfactant (cetrimonium bromide), resulting in an 88% reduction of all short-chain PFAAs within 120 min of treatment.
This work demonstrates the first plasma-based water treatment technology to be deployed on site for direct nonthermal treatment of per- and polyfluoroalkyl substances.
Field Demonstration of a Pilot-Scale Plasma Reactor for the Rapid Removal of Poly- and Perfluoroalkyl Substances in Groundwater
https://orcid.org/0000-0001-9599-6733
https://orcid.org/0000-0002-6371-4751
A pilot-scale plasma-based water treatment system containing two enhanced contact plasma reactors was deployed to a fire training area at Wright-Patterson Air Force Base to treat poly- and perfluoroalkyl substances (PFAS) in aqueous film-forming foam-impacted groundwater from two monitoring wells, wells B and C. Extracted water from both wells was treated through the plasma trailer in a semibatch mode at flow rates ranging from 2.4 to 8.4 L/min. Long-chain perfluoroalkyl acids (PFAAs; fluorocarbon chain of ≥6) and PFAS precursors were reduced by ≥90% for all flow rates in a single cycle through the reactors. Combined perfluorooctanoic acid and perfluorooctanesulfonic acid concentrations lower than the U.S. Environmental Protection Agency’s health advisory level of 70 ng/L were achieved in fewer than three cycles through the reactors. Short-chain PFAAs (fluorocarbon chain of ≤5) were removed to a lesser extent (0–95%) due to their generation during plasma treatment of long-chain PFAAs and PFAS precursors and limited accumulation at the plasma–liquid interface of the reactor. To improve the destruction of short-chain PFAAs, batch mode experiments were performed with the addition of a cationic surfactant (cetrimonium bromide), resulting in an 88% reduction of all short-chain PFAAs within 120 min of treatment.
This work demonstrates the first plasma-based water treatment technology to be deployed on site for direct nonthermal treatment of per- and polyfluoroalkyl substances.
Field Demonstration of a Pilot-Scale Plasma Reactor for the Rapid Removal of Poly- and Perfluoroalkyl Substances in Groundwater
Nau-Hix, Chase (Autor:in) / Multari, Nicholas (Autor:in) / Singh, Raj Kamal (Autor:in) / Richardson, Stephen (Autor:in) / Kulkarni, Poonam (Autor:in) / Anderson, Richard Hunter (Autor:in) / Holsen, Thomas M. (Autor:in) / Mededovic Thagard, Selma (Autor:in)
ACS ES&T Water ; 1 ; 680-687
12.03.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Rapid Removal of Poly- and Perfluoroalkyl Substances with Quaternized Wood Pulp
| American Chemical Society | 2022
Pilot-Scale Field Demonstration of Environmental Nanotechnology for Groundwater Defluoridation
| American Chemical Society | 2023
Study on Pollution Characteristics of Perfluoroalkyl Substances (PFASs) in Shallow Groundwater
| DOAJ | 2023
| American Chemical Society | 2024
Longitudinal poly- and perfluoroalkyl substances (PFAS) levels in Dutch infants
| DOAJ | 2022