Photocatalytic degradation of volatile chlorinated organic compounds with ozone addition

• Autorzy: Ebrahimi H. , Shahna F. G. , Bahrami A. , Jaleh B. , Abedi K.

Identyfikatory

DOI

10.1515/aep-2017-0006

• Języki publikacji: EN

Abstrakty

EN

The decomposition of hydrocarbons using combined advanced oxidation methods is largely considered owing to abundant production of OH radicals and the potential economic advantages. In this study, the synergetic effect of ozonation on photocatalytic oxidation of chloroform and chlorobenzene over expanded graphite-TiO₂&ZnO Nano composite was investigated. The effect of introduced ozone concentration and residence time was also examined on removal efficiency. The results showed that the removal efficiency was significantly enhanced by the combined system resulting from the additional oxidation process causing active species to be increased. Increasing the introduced ozone concentration which generates more reactive compounds had a greater effect on the removal efficiency than that of residence time. However, from the mineralization point of view, the residence time had a dominant effect, and the selectivity towards CO₂ was dramatically declined when the flow rate increased. Based on these results, the combined system is preferred due to higher removal efficiency and complete mineralization.

Słowa kluczowe

EN

photocatalytic oxidation; ozonation; chloroform; chlorobenzene

• Wydawca: Institute of Environmental Engineering, Polish Academy of Sciences
• Czasopismo: Archives of Environmental Protection
• Rocznik: 2017
• Tom: Vol. 43, no. 1
• Strony: 65--72
• Opis fizyczny: Bibliogr. 26 poz., fot., rys., wykr.

Twórcy

autor

Ebrahimi H.

• Iran University of Medical Sciences, Iran School of Public Health, Department of Occupational Health

autor

Shahna F. G.

• Hamadan University of Medical Sciences, Iran School of Public Health, Center of Excellence for Occupational Health and Research Center for Health Science

autor

Bahrami A.

• Hamadan University of Medical Sciences, Iran School of Public Health, Center of Excellence for Occupational Health and Research Center for Health Science

autor

Jaleh B.

• Bu-Ali Sina University, Iran Faculty of Science, Department of Physics

autor

Abedi K.

• Kurdistan University of Medical Sciences, Iran Environmental Health Research Center
• Kurdistan University of Medical Sciences, Iran Department of Occupational Health Engineering, Faculty of Health

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).