Photocatalytic removal of trichloroethylene from water with LaFeO3
| Autor: | Moo Been Chang, Wei Chieh Chung, Shu Hao Chang, Yen Chen Hsu |
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| Rok vydání: | 2019 |
| Předmět: |
Pollutant
Aqueous solution Trichloroethylene Chemistry Health Toxicology and Mutagenesis Photodissociation Aqueous two-phase system General Medicine 010501 environmental sciences 01 natural sciences Pollution chemistry.chemical_compound Light intensity Adsorption Environmental chemistry Photocatalysis Environmental Chemistry 0105 earth and related environmental sciences |
| Zdroj: | Environmental Science and Pollution Research. 26:26276-26285 |
| ISSN: | 1614-7499 0944-1344 |
| DOI: | 10.1007/s11356-019-05886-5 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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