title: Decomposition Characteristics of Toluene Vapor Using Titanium Dioxide Photocatalyst and Zeolite Thermally Sprayed on an Aluminum Fiber Filter.
abstract: Decomposition characteristics of toluene vapor by titanium dioxide photocatalyst and zeolite that are prepared by thermal spraying on an aluminum fiber filter (photocatalyst filter) were investigated. Toluene vapor was injected into a small chamber made of stainless steel, and an air cleaner equipped with the photocatalyst filter was operated. The vapor concentration in the chamber decreased exponentially. The decreasing rate of toluene vapor in the chamber depended on the initial toluene concentration, and the higher the initial vapor concentration was, the lower the decreasing rate was obtained. The decreasing rate was constant during each decomposition experiment, although the concentration decreased with time. To investigate the effect of zeolite on the reduction of the vapor concentration, we compared the decreasing rates of toluene vapor by photocatalyst filters with and without zeolite.The decreasing rate of toluene concentration using the filter without zeolite was larger than that with zeolite. The reason for this would be that photocatalyst decomposed toluene not only in air but also adsorbed in zeolite.
authors.affiliation: Department of Environmental Management, School of Health Sciences, University of Occupational and Environmental Health, Japan.
authors.forename: Hajime
authors.initials: H
authors.lastname: Hori
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Hinoue
authors.forename: Sumiyo
authors.initials: S
authors.lastname: Ishimatsu
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Fueta
authors.forename: Toru
authors.initials: T
authors.lastname: Ishidao
authors.forename: Kaori
authors.initials: K
authors.lastname: Takabatake
authors.forename: Natsumi
authors.initials: N
authors.lastname: Yakiyama
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Yamamoto
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D055668:Photochemical Processes; D014025:Titanium / Q000737:chemistry*; D014050:Toluene / Q000737:chemistry*; D014835:Volatilization; D017641:Zeolites / Q000737:chemistry*
chemical_list: D017641:Zeolites; C009495:titanium dioxide; D014050:Toluene; D000535:Aluminum; D014025:Titanium