Photocatalytic removal of trichloroethylene from water with LaFeO3

Yen Chen Hsu; Shu Hao Chang; Wei Chieh Chung; Moo Been Chang

doi:10.1007/s11356-019-05886-5

Photocatalytic removal of trichloroethylene from water with LaFeO₃

Yen Chen Hsu, Shu Hao Chang, Wei Chieh Chung, Moo Been Chang

Graduate Institute of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Tricholorethylene (TCE) has been recognized as second common organic pollutant found in groundwater in Taiwan. Several advanced oxidation processes (AOPs) have been applied for TCE removal and photocatalytic is one of promising AOP techniques. In this study, LaFeO₃ is successfully synthesized via sol-gel method and investigated for its photocatalytic oxidation rate toward TCE in water. Experimental results indicate that 95% removal efficiency of TCE can be achieved in aqueous solution with LaFeO₃ (2 g/L) as photocatalyst within 1 h of Xenon lamp illumination. Additionally, the influences of initial TCE concentration, light intensity, photocatalyst loading, and pH value on the TCE removal efficiency are evaluated as well. The highest energy efficiency obtained in this study is 10.8 mg TCE/kWh and the value is higher than those reported in previous studies. Besides, removal mechanisms have been identified and the results indicate that the overall removal efficiency reaches 82%, with adsorption and photolysis accounting for 20% and 39%, respectively.

Original language	English
Pages (from-to)	26276-26285
Number of pages	10
Journal	Environmental Science and Pollution Research
Volume	26
Issue number	25
DOIs	https://doi.org/10.1007/s11356-019-05886-5
State	Published - 1 Sep 2019

Keywords

Aqueous phase
Perovskite
Photocatalytic oxidation
Trichloroethylene

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10.1007/s11356-019-05886-5

Cite this

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title = "Photocatalytic removal of trichloroethylene from water with LaFeO3 ",

abstract = "Tricholorethylene (TCE) has been recognized as second common organic pollutant found in groundwater in Taiwan. Several advanced oxidation processes (AOPs) have been applied for TCE removal and photocatalytic is one of promising AOP techniques. In this study, LaFeO3 is successfully synthesized via sol-gel method and investigated for its photocatalytic oxidation rate toward TCE in water. Experimental results indicate that 95% removal efficiency of TCE can be achieved in aqueous solution with LaFeO3 (2 g/L) as photocatalyst within 1 h of Xenon lamp illumination. Additionally, the influences of initial TCE concentration, light intensity, photocatalyst loading, and pH value on the TCE removal efficiency are evaluated as well. The highest energy efficiency obtained in this study is 10.8 mg TCE/kWh and the value is higher than those reported in previous studies. Besides, removal mechanisms have been identified and the results indicate that the overall removal efficiency reaches 82%, with adsorption and photolysis accounting for 20% and 39%, respectively.",

keywords = "Aqueous phase, Perovskite, Photocatalytic oxidation, Trichloroethylene",

author = "Hsu, {Yen Chen} and Chang, {Shu Hao} and Chung, {Wei Chieh} and Chang, {Moo Been}",

note = "Publisher Copyright: {\textcopyright} 2019, Springer-Verlag GmbH Germany, part of Springer Nature.",

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T1 - Photocatalytic removal of trichloroethylene from water with LaFeO3

AU - Hsu, Yen Chen

AU - Chang, Shu Hao

AU - Chung, Wei Chieh

AU - Chang, Moo Been

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Tricholorethylene (TCE) has been recognized as second common organic pollutant found in groundwater in Taiwan. Several advanced oxidation processes (AOPs) have been applied for TCE removal and photocatalytic is one of promising AOP techniques. In this study, LaFeO3 is successfully synthesized via sol-gel method and investigated for its photocatalytic oxidation rate toward TCE in water. Experimental results indicate that 95% removal efficiency of TCE can be achieved in aqueous solution with LaFeO3 (2 g/L) as photocatalyst within 1 h of Xenon lamp illumination. Additionally, the influences of initial TCE concentration, light intensity, photocatalyst loading, and pH value on the TCE removal efficiency are evaluated as well. The highest energy efficiency obtained in this study is 10.8 mg TCE/kWh and the value is higher than those reported in previous studies. Besides, removal mechanisms have been identified and the results indicate that the overall removal efficiency reaches 82%, with adsorption and photolysis accounting for 20% and 39%, respectively.

AB - Tricholorethylene (TCE) has been recognized as second common organic pollutant found in groundwater in Taiwan. Several advanced oxidation processes (AOPs) have been applied for TCE removal and photocatalytic is one of promising AOP techniques. In this study, LaFeO3 is successfully synthesized via sol-gel method and investigated for its photocatalytic oxidation rate toward TCE in water. Experimental results indicate that 95% removal efficiency of TCE can be achieved in aqueous solution with LaFeO3 (2 g/L) as photocatalyst within 1 h of Xenon lamp illumination. Additionally, the influences of initial TCE concentration, light intensity, photocatalyst loading, and pH value on the TCE removal efficiency are evaluated as well. The highest energy efficiency obtained in this study is 10.8 mg TCE/kWh and the value is higher than those reported in previous studies. Besides, removal mechanisms have been identified and the results indicate that the overall removal efficiency reaches 82%, with adsorption and photolysis accounting for 20% and 39%, respectively.

KW - Aqueous phase

KW - Perovskite

KW - Photocatalytic oxidation

KW - Trichloroethylene

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