Highly Efficient VOC Decomposition Using a Complex System (OH Radical, Ozone-UV, and TiO_2)

摘要

Toluene decomposition is examined using a corona discharge, a UV lamp, and a TiO_2 catalyst complex system. The toluene decomposition reaction occurs only with OH and O (~1D) radicals. High decomposition ratios are obtained: 98% for the toluene/H_2O/O_2-corona/UV system and 70% for the toluene/H_2O/air-corona/UV system. Moreover, if the TiO_2 catalyst is combined with the cor-ona-UV system for 1 000 ppm of toluene, this value increases to 78% (0.31 Wh·m~(-3)·ppm~(-1)), which is higher than that obtained in a normal corona discharge system.