Field demonstration of coupling ion-exchange resin with electrochemical oxidation for enhanced treatment of per- and polyfluoroalkyl substances (PFAS) in groundwater

This pilot-scale field demonstration evaluated the remediation of poly- and perfluoroalkyl substances (PFAS) from groundwater contaminated with aqueous film-forming foam (AFFF) from a coupled regenerable ion exchange resin (IXR) and electrochemical oxidation (EO) treatment train. A pilot-scale IXR s...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Shangtao Liang, Rebecca Mora, Qingguo Huang, Rachael Casson, Yaye Wang, Steven Woodard, Hunter Anderson
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	PFAS Ion exchange resin Electrochemical oxidation Field demonstration Groundwater Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/b9d89c1e9dee4c2db7b3dc87ef5cd727
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:b9d89c1e9dee4c2db7b3dc87ef5cd727
record_format	dspace
spelling	oai:doaj.org-article:b9d89c1e9dee4c2db7b3dc87ef5cd7272021-12-04T04:36:27ZField demonstration of coupling ion-exchange resin with electrochemical oxidation for enhanced treatment of per- and polyfluoroalkyl substances (PFAS) in groundwater2666-821110.1016/j.ceja.2021.100216https://doaj.org/article/b9d89c1e9dee4c2db7b3dc87ef5cd7272022-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666821121001319https://doaj.org/toc/2666-8211This pilot-scale field demonstration evaluated the remediation of poly- and perfluoroalkyl substances (PFAS) from groundwater contaminated with aqueous film-forming foam (AFFF) from a coupled regenerable ion exchange resin (IXR) and electrochemical oxidation (EO) treatment train. A pilot-scale IXR system was used that incorporates a novel resin regeneration process, and recovers and reuses the majority of the regenerant solution using distillation. The pilot system removed PFAS from ∼1,000,000 L (approximately 260,000 gallons) of contaminated groundwater from a fire training area, and treated effluent from the IXR system was non-detect for PFOA and PFOS. The concentrated waste stream (i.e., still bottom) from IXR was treated on-site by an EO system with Ti4O7 electrodes, achieving 80–98% destruction of PFOA and PFOS. The surface area normalized first-order rate constants (kSA) were 3.96 × 10−7 m s−1 and 7.92 × 10−7 m s−1 for PFOA and PFOS, respectively, with short-chain perfluoroalkyl acids (PFAAs) identified as intermediate degradation products. Based on the fluoride recovered and PFAS mass loss measured at the end of EO treatment, fluoride release ratios were 130% for still bottom sample 1 (SB1) and 215% for still bottom sample 2 (SB2), indicating mineralization of unquantified fluorinated compounds in the waste stream. Overall, the electric energy consumed per order of magnitude reduction in concentration (EE/O) for treating PFOA and PFOS in groundwater by the IXR-EO treatment train was 0.131–0.161 kWh/m3 for PFOA and 0.071–0.094 kWh/m3 for PFOS, which was orders of magnitude lower than the reported EE/O values for stand-alone electrochemical treatment. The results of this field demonstration show the promise of coupling regenerable IXR with EO for cost-effective removal, concentrating, and destroying PFAS from groundwater.Shangtao LiangRebecca MoraQingguo HuangRachael CassonYaye WangSteven WoodardHunter AndersonElsevierarticlePFASIon exchange resinElectrochemical oxidationField demonstrationGroundwaterChemical engineeringTP155-156ENChemical Engineering Journal Advances, Vol 9, Iss , Pp 100216- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	PFAS Ion exchange resin Electrochemical oxidation Field demonstration Groundwater Chemical engineering TP155-156
spellingShingle	PFAS Ion exchange resin Electrochemical oxidation Field demonstration Groundwater Chemical engineering TP155-156 Shangtao Liang Rebecca Mora Qingguo Huang Rachael Casson Yaye Wang Steven Woodard Hunter Anderson Field demonstration of coupling ion-exchange resin with electrochemical oxidation for enhanced treatment of per- and polyfluoroalkyl substances (PFAS) in groundwater
description	This pilot-scale field demonstration evaluated the remediation of poly- and perfluoroalkyl substances (PFAS) from groundwater contaminated with aqueous film-forming foam (AFFF) from a coupled regenerable ion exchange resin (IXR) and electrochemical oxidation (EO) treatment train. A pilot-scale IXR system was used that incorporates a novel resin regeneration process, and recovers and reuses the majority of the regenerant solution using distillation. The pilot system removed PFAS from ∼1,000,000 L (approximately 260,000 gallons) of contaminated groundwater from a fire training area, and treated effluent from the IXR system was non-detect for PFOA and PFOS. The concentrated waste stream (i.e., still bottom) from IXR was treated on-site by an EO system with Ti4O7 electrodes, achieving 80–98% destruction of PFOA and PFOS. The surface area normalized first-order rate constants (kSA) were 3.96 × 10−7 m s−1 and 7.92 × 10−7 m s−1 for PFOA and PFOS, respectively, with short-chain perfluoroalkyl acids (PFAAs) identified as intermediate degradation products. Based on the fluoride recovered and PFAS mass loss measured at the end of EO treatment, fluoride release ratios were 130% for still bottom sample 1 (SB1) and 215% for still bottom sample 2 (SB2), indicating mineralization of unquantified fluorinated compounds in the waste stream. Overall, the electric energy consumed per order of magnitude reduction in concentration (EE/O) for treating PFOA and PFOS in groundwater by the IXR-EO treatment train was 0.131–0.161 kWh/m3 for PFOA and 0.071–0.094 kWh/m3 for PFOS, which was orders of magnitude lower than the reported EE/O values for stand-alone electrochemical treatment. The results of this field demonstration show the promise of coupling regenerable IXR with EO for cost-effective removal, concentrating, and destroying PFAS from groundwater.
format	article
author	Shangtao Liang Rebecca Mora Qingguo Huang Rachael Casson Yaye Wang Steven Woodard Hunter Anderson
author_facet	Shangtao Liang Rebecca Mora Qingguo Huang Rachael Casson Yaye Wang Steven Woodard Hunter Anderson
author_sort	Shangtao Liang
title	Field demonstration of coupling ion-exchange resin with electrochemical oxidation for enhanced treatment of per- and polyfluoroalkyl substances (PFAS) in groundwater
title_short	Field demonstration of coupling ion-exchange resin with electrochemical oxidation for enhanced treatment of per- and polyfluoroalkyl substances (PFAS) in groundwater
title_full	Field demonstration of coupling ion-exchange resin with electrochemical oxidation for enhanced treatment of per- and polyfluoroalkyl substances (PFAS) in groundwater
title_fullStr	Field demonstration of coupling ion-exchange resin with electrochemical oxidation for enhanced treatment of per- and polyfluoroalkyl substances (PFAS) in groundwater
title_full_unstemmed	Field demonstration of coupling ion-exchange resin with electrochemical oxidation for enhanced treatment of per- and polyfluoroalkyl substances (PFAS) in groundwater
title_sort	field demonstration of coupling ion-exchange resin with electrochemical oxidation for enhanced treatment of per- and polyfluoroalkyl substances (pfas) in groundwater
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/b9d89c1e9dee4c2db7b3dc87ef5cd727
work_keys_str_mv	AT shangtaoliang fielddemonstrationofcouplingionexchangeresinwithelectrochemicaloxidationforenhancedtreatmentofperandpolyfluoroalkylsubstancespfasingroundwater AT rebeccamora fielddemonstrationofcouplingionexchangeresinwithelectrochemicaloxidationforenhancedtreatmentofperandpolyfluoroalkylsubstancespfasingroundwater AT qingguohuang fielddemonstrationofcouplingionexchangeresinwithelectrochemicaloxidationforenhancedtreatmentofperandpolyfluoroalkylsubstancespfasingroundwater AT rachaelcasson fielddemonstrationofcouplingionexchangeresinwithelectrochemicaloxidationforenhancedtreatmentofperandpolyfluoroalkylsubstancespfasingroundwater AT yayewang fielddemonstrationofcouplingionexchangeresinwithelectrochemicaloxidationforenhancedtreatmentofperandpolyfluoroalkylsubstancespfasingroundwater AT stevenwoodard fielddemonstrationofcouplingionexchangeresinwithelectrochemicaloxidationforenhancedtreatmentofperandpolyfluoroalkylsubstancespfasingroundwater AT hunteranderson fielddemonstrationofcouplingionexchangeresinwithelectrochemicaloxidationforenhancedtreatmentofperandpolyfluoroalkylsubstancespfasingroundwater
_version_	1718372938158178304

Field demonstration of coupling ion-exchange resin with electrochemical oxidation for enhanced treatment of per- and polyfluoroalkyl substances (PFAS) in groundwater

Ejemplares similares