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Effect of solution chemistry on the transport of short-chain and long-chain perfluoroalkyl carboxylic acids (PFCAs) in saturated porous media.
Qi, Lin; Li, Runwei; Wu, Yudi; Lin, Xinsong; Chen, Gang.
Afiliación
  • Qi L; Department of Civil and Environmental Engineering at FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, 32310, USA. Electronic address: lq19b@fsu.edu.
  • Li R; Department of Civil and Environmental Engineering at FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, 32310, USA.
  • Wu Y; Department of Civil and Environmental Engineering at FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, 32310, USA.
  • Lin X; Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL, 32306, USA.
  • Chen G; Department of Civil and Environmental Engineering at FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, 32310, USA.
Chemosphere ; 303(Pt 2): 135160, 2022 Sep.
Article en En | MEDLINE | ID: mdl-35640683
Perfluorocarboxylic acids (PFCAs) are one of the most widely detected classes of PFAS in the global environment after decades of intensive use. This study investigated the impact of perfluorinated carbon chain length on the transport behavior of PFCAs by testing and modeling two short-chain (PFPeA and PFHxA) and two long-chain PFCAs (PFOA and PFDA) in laboratory water-saturated columns. Moreover, their transport behavior was examined under different solution chemistry conditions, including pH, ionic strength, and cationic type. The experimental and simulation results indicated that the chain length had a limited impact on transport behaviors of PFPeA, PFHxA, and PFOA under various pH and ionic strengths, evidenced by their tracer-like breakthrough curves. In contrast, the mobility of PFDA was significantly affected by pH and ionic strengths. Additionally, the transport of all four PFCAs was inhabited in the presence of the divalent cation Ca2+. This study could help predict migration behavior and assess the potential risk of PFCAs in the subsurface system.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Fluorocarburos Tipo de estudio: Prognostic_studies Idioma: En Revista: Chemosphere Año: 2022 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Fluorocarburos Tipo de estudio: Prognostic_studies Idioma: En Revista: Chemosphere Año: 2022 Tipo del documento: Article Pais de publicación: Reino Unido