پديدآورندگان :
Parvizi Nooshin Chemical Engineering Faculty, Sahand University of Technology, Sahand New Town, Tabriz, Iran , Environmental Engineering Research Centre, Sahand University of Technology, Sahand New Town, Tabriz, Iran; , Rahemi Nader Chemical Engineering Faculty, Sahand University of Technology, Sahand New Town, Tabriz, Iran , Environmental Engineering Research Centre, Sahand University of Technology, Sahand New Town, Tabriz, Iran; , Allahyari Somaiyeh Chemical Engineering Faculty, Sahand University of Technology, Sahand New Town, Tabriz, Iran , Environmental Engineering Research Centre, Sahand University of Technology, Sahand New Town, Tabriz, Iran; , Hoseini Shayan Chemical Engineering Faculty, Sahand University of Technology, Sahand New Town, Tabriz, Iran , Environmental Engineering Research Centre, Sahand University of Technology, Sahand New Town, Tabriz, Iran
كليدواژه :
Volatile Organic Compounds , Perovskite , Non , Thermal Plasma
چكيده فارسي :
Air pollution such as volatile organic compounds (VOCs) is one of the main concerns of human in the 21st century. VOCs are one of the major air contaminants. Up until now, various kinds of catalysts have been tested in the plasma-catalytic removal of VOC pollutants. Perovskite catalysts have shown excellent performance in VOC oxidation. Perovskites are the mixed metal oxides with the general formula of ABO3 [1]. During the last three decades, non-thermal plasma (NTP) technology has shown great potential for removal of low concentration of VOCs in large volume waste gas streams due to its unique ability to generate a chemically reactive environment even at room temperature [2]. In this work simultaneous use of plasma technology, a perovskite catalyst is used to improve catalyst performance. The La1-x Znx MnO3 (x = 0 to 0.6) perovskite-type catalyst were prepared by sol-gel method using citric acid as a complexing agent. The obtained sample was calcined at 700 ºC for 5 hr. The sample was tested in a dielectric barrier discharge (DBD). The experimental set up consisted of a gas supply system, a DBD reactor, a high voltage power supply and gas analysis instrument. The gas flow is consisting of Benzene, Toluene, and Xylene (BTX). In this work, the effects of different voltage (5, 10, and 15 kV) were investigated. The results showed that the perovskite La0.8Zn0.2MnO3 in 15 kV is the best reducibility with 98% Benzene 99% Toluene, and 86% xylene among the tested catalysts.
