| Title: | Enhancing ethylbenzene vapors degradation in a hybrid system based on photocatalytic oxidation UV/TiO2-In and a biofiltration process |
| Author(s): | Hinojosa-Reyes M; Rodriguez-Gonzalez V; Arriaga S; |
| Address: | "Instituto Potosino de Investigacion Cientifica y Tecnologica A.C., Division de Ciencias Ambientales, Camino a la Presa San Jose 2055, Lomas 4(a) seccion, CP. 78216, San Luis Potosi, S.L.P., Mexico" |
| DOI: | 10.1016/j.jhazmat.2012.01.035 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "The use of hybrid processes for the continuous degradation of ethylbenzene (EB) vapors has been evaluated. The hybrid system consists of an UV/TiO(2)-In photooxidation coupled with a biofiltration process. Both the photocatalytic system using P25-Degussa or indium-doped TiO(2) catalysts and the photolytic process were performed at UV-wavelengths of 254 nm and 365 nm. The experiments were carried out in an annular plug flow photoreactor packed with granular perlite previously impregnated with the catalysts, and in a glass biofilter packed with perlite and inoculated with a microbial consortium. Both reactors were operated at an inlet loading rate of 127 g m(-3)h(-1). The greatest degradation rate of EB (0.414 ng m(-2)min(-1)) was obtained with the TiO(2)-In 1%/365 nm photocatalytic system. The elimination capacity (EC) obtained in the control biofilter had values approximately 60 g m(-3)h(-1). Consequently, the coupled system was operated for 15 days, and a maximal EC of 275 g m(-3)h(-1). Thus, the results indicate that the use of hybrid processes enhanced the EB vapor degradation and that this could be a promising technology for the abatement of recalcitrant volatile organic compounds" |
| Keywords: | Benzene Derivatives/*chemistry Catalysis Filtration/*methods Gas Chromatography-Mass Spectrometry Oxidation-Reduction *Photochemistry Titanium/*chemistry *Ultraviolet Rays; |
| Notes: | "MedlineHinojosa-Reyes, M Rodriguez-Gonzalez, V Arriaga, S eng Research Support, Non-U.S. Gov't Netherlands 2012/02/03 J Hazard Mater. 2012 Mar 30; 209-210:365-71. doi: 10.1016/j.jhazmat.2012.01.035. Epub 2012 Jan 18" |
