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Title

Photocatalytic Removal of Methylbenzene Vapors by MnO2/Al2O3/Fe2O3 Nano composite

فصلنامه بهداشت، ایمنی و محیط زیست، دوره: 6، شماره: 1
Year: 1397
COI: JR_IJHSE-6-1_001
Language: EnglishView: 272
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Authors

Maryam Feiz-Arefi - Center of Excellence for Occupational Health and Occupational Health, Safety Sciences Research Center, Hamadan, Iran.
Farshid Ghorbani- Shahna - Center of Excellence for Occupational Health and Occupational Health, Safety Sciences Research Center, Hamadan, Iran.
Abdulrahman Bahrami - Center of Excellence for Occupational Health and Occupational Health, Safety Sciences Research Center, Hamadan, Iran.
Hossein Ebrahimi - Department of occupational Health, Faculty of Health, University of Medical Sciences of Iran .Tehran. Iran.

Abstract:

Methyl benzene, which has carcinogenic effects, is a volatile organic compound that is widely used in various industries. Nano composites of Mno2/Al203/Fe203, which is a new photocatalyst, have not been applied to remove contaminants from air streams. Therefore, the aim of the present study was to investigate the photocatalytic removal of ethyl benzene by using this nano composite activated by visible light. Morphological characteristics of the synthesized Nano composite in a sol-gel method are determined through XRD, FTIR, and SEM. Through the photocatalyst process and by the use of visible light radiation, the synthesized Nano composite is used to degrade ethyl benzene in the gas phase. In order to estimate the main effects and interaction ones and to optimize the experiment numbers, the response surface method was used. Operational parameters investigated in the study are the initial concentration of contaminants, relative humidity, and the residence time, which were considered in three levels; further, the experiments were designed by Design Expert version 9 software. The results show the Nano composite particle sizes were less than 82 nanometers. The findings also indicate that relative humidity and residence time were effective parameters in removal efficiency of ethyl benzene. This Nano composite, at the optimal conditions, was capable of removing 98.72% of the pollutants, with an initial content of 300 ppm. MnO2/Al2O3/Fe2O3 Nano composite is a suitable catalyst to remove ethyl benzene from air streams. Among the features of the Nano composite are reaction at room temperature and lower production dangerous byproducts, which are the main advantages of this Nano composite as compared with other nano composites.

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This Paper COI Code is JR_IJHSE-6-1_001. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/833275/

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Feiz-Arefi, Maryam and Ghorbani- Shahna, Farshid and Bahrami, Abdulrahman and Ebrahimi, Hossein,1397,Photocatalytic Removal of Methylbenzene Vapors by MnO2/Al2O3/Fe2O3 Nano composite ,https://civilica.com/doc/833275

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