A wire-mesh catalyst coated by La0.8Sr0.2MnO3 was combined with a dielectric barrier discharge (DBD) reactor for toluene removal at atmospheric pressure.It was found that toluene removal efficiency and carbon dioxide selectivity were enhanced in the catalytic packed-bed reactor.In addition,ozone and nitrogen monoxide from the gas effluent byproducts decreased.This is the first time that ultrasound combined with plasma has been used for toluene removal.A synergistic effect on toluene removal was observed in the plasma-assisted ultrasound system.At the same time,the system increased toluene conversion and reduced ozone emission.