Vol. 11, No.1, pp.92-97 (2017)
Decomposition of Toluene Adsorbed on Hydrophobic Zeolite by Nonthermal Plasma Flow with Water Spray
T. Kuroki, M. Tanaka, and M. Okubo
Department of Mechanical Engineering, Osaka Prefecture University, Japan
Abstract
The effect of water spray on the oxidative decomposition of adsorbed toluene by nonthermal plasma flow is investigated. By spraying water upstream of the adsorbent, OH radicals are generated around the adsorbent, and the decomposition of adsorbed toluene can be enhanced. Using two different water spray conditions (condition I: spraying for 10 s after 30 min, spraying for 20 s after 60 min, and spraying for 10 s every 3 min from 90 min to 120 min; condition II: spraying for 10 s every 5 min), the effect of water spray on the toluene conversion rate is investigated. A conversion efficiency of 98% is achieved after 105 min under the no-spray condition and condition I. However, the conversion efficiency is approximately 80% under condition II. An improvement in the conversion rate by spraying water is not observed under this experimental condition.
Keywords - Nonthermal plasma flow, water spray, surface discharge, adsorption, decomposition, toluene