Enhanced sonochemical degradation of perfluorooctanoic acid by sulfate ions

Jo Chen Lin, Shang Lien Lo, Ching Yao Hu, Yu Chi Lee, Jeff Kuo

研究成果: 雜誌貢獻文章

38 引文 (Scopus)

摘要

This study investigated the effects of sulfate ions on the decomposition of perfluorooctanoic acid (PFOA) by ultrasonic (US) irradiation at various pHs, sulfate doses, powers and temperatures. The removal of PFOA was augmented with an increased sulfate ion concentration, with PFOA being almost completely decomposed in 90 min at 25 °C with a sulfate dose of 117 mM. The two major mechanisms in the sulfate-assisted sonochemical system are the direct destruction of PFOA by cavitation and the indirect destruction of PFOA by sulfate free radicals. The decomposition of PFOA followed pseudo-first-order kinetics and was not influenced by pH. The reaction rate constants decreased with increases in temperature due to decreases in the surface tension of the solution.
原文英語
頁(從 - 到)542-547
頁數6
期刊Ultrasonics Sonochemistry
22
DOIs
出版狀態已發佈 - 2015

指紋

perfluorooctanoic acid
Sulfates
sulfates
Ions
degradation
Degradation
acids
Acids
ions
destruction
Decomposition
decomposition
dosage
Temperature
Surface Tension
ion concentration
cavitation flow
Free radicals
Cavitation
Ultrasonics

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Acoustics and Ultrasonics
  • Radiology Nuclear Medicine and imaging

引用此文

Enhanced sonochemical degradation of perfluorooctanoic acid by sulfate ions. / Lin, Jo Chen; Lo, Shang Lien; Hu, Ching Yao; Lee, Yu Chi; Kuo, Jeff.

於: Ultrasonics Sonochemistry, 卷 22, 2015, p. 542-547.

研究成果: 雜誌貢獻文章

Lin, Jo Chen ; Lo, Shang Lien ; Hu, Ching Yao ; Lee, Yu Chi ; Kuo, Jeff. / Enhanced sonochemical degradation of perfluorooctanoic acid by sulfate ions. 於: Ultrasonics Sonochemistry. 2015 ; 卷 22. 頁 542-547.
@article{b826db0032a44031b808a98f1c9c218e,
title = "Enhanced sonochemical degradation of perfluorooctanoic acid by sulfate ions",
abstract = "This study investigated the effects of sulfate ions on the decomposition of perfluorooctanoic acid (PFOA) by ultrasonic (US) irradiation at various pHs, sulfate doses, powers and temperatures. The removal of PFOA was augmented with an increased sulfate ion concentration, with PFOA being almost completely decomposed in 90 min at 25 °C with a sulfate dose of 117 mM. The two major mechanisms in the sulfate-assisted sonochemical system are the direct destruction of PFOA by cavitation and the indirect destruction of PFOA by sulfate free radicals. The decomposition of PFOA followed pseudo-first-order kinetics and was not influenced by pH. The reaction rate constants decreased with increases in temperature due to decreases in the surface tension of the solution.",
keywords = "Defluorination, Perfluorooctanoic acid, Sonochemical, Sulfate ion, Surface tension, Ultrasonic",
author = "Lin, {Jo Chen} and Lo, {Shang Lien} and Hu, {Ching Yao} and Lee, {Yu Chi} and Jeff Kuo",
year = "2015",
doi = "10.1016/j.ultsonch.2014.06.006",
language = "English",
volume = "22",
pages = "542--547",
journal = "Ultrasonics Sonochemistry",
issn = "1350-4177",
publisher = "Elsevier",

}

TY - JOUR

T1 - Enhanced sonochemical degradation of perfluorooctanoic acid by sulfate ions

AU - Lin, Jo Chen

AU - Lo, Shang Lien

AU - Hu, Ching Yao

AU - Lee, Yu Chi

AU - Kuo, Jeff

PY - 2015

Y1 - 2015

N2 - This study investigated the effects of sulfate ions on the decomposition of perfluorooctanoic acid (PFOA) by ultrasonic (US) irradiation at various pHs, sulfate doses, powers and temperatures. The removal of PFOA was augmented with an increased sulfate ion concentration, with PFOA being almost completely decomposed in 90 min at 25 °C with a sulfate dose of 117 mM. The two major mechanisms in the sulfate-assisted sonochemical system are the direct destruction of PFOA by cavitation and the indirect destruction of PFOA by sulfate free radicals. The decomposition of PFOA followed pseudo-first-order kinetics and was not influenced by pH. The reaction rate constants decreased with increases in temperature due to decreases in the surface tension of the solution.

AB - This study investigated the effects of sulfate ions on the decomposition of perfluorooctanoic acid (PFOA) by ultrasonic (US) irradiation at various pHs, sulfate doses, powers and temperatures. The removal of PFOA was augmented with an increased sulfate ion concentration, with PFOA being almost completely decomposed in 90 min at 25 °C with a sulfate dose of 117 mM. The two major mechanisms in the sulfate-assisted sonochemical system are the direct destruction of PFOA by cavitation and the indirect destruction of PFOA by sulfate free radicals. The decomposition of PFOA followed pseudo-first-order kinetics and was not influenced by pH. The reaction rate constants decreased with increases in temperature due to decreases in the surface tension of the solution.

KW - Defluorination

KW - Perfluorooctanoic acid

KW - Sonochemical

KW - Sulfate ion

KW - Surface tension

KW - Ultrasonic

UR - http://www.scopus.com/inward/record.url?scp=84906778405&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84906778405&partnerID=8YFLogxK

U2 - 10.1016/j.ultsonch.2014.06.006

DO - 10.1016/j.ultsonch.2014.06.006

M3 - Article

AN - SCOPUS:84906778405

VL - 22

SP - 542

EP - 547

JO - Ultrasonics Sonochemistry

JF - Ultrasonics Sonochemistry

SN - 1350-4177

ER -