2015 年 30 巻 2 号 p. 108-113
The removal of air pollutants containing nanoparticles using a wet-type plasma reactor is investigated by combining a wet-type electrostatic precipitator with a nonthermal plasma reactor. This reactor can simultaneously remove nanoparticles and hazardous gases such as nitrogen oxides (NOx) and sulfur oxides (SOx). In order to evaluate the performance of this reactor, a simulated exhaust gas is prepared using polystyrene latex particles having diameters of 29, 48, 100, 202, and 309 nm, and NO and SO2 gas cylinders. A collection efficiency of more than 99% is achieved for nanoparticles having diameters in the 27.9–216.7 nm range. Moreover, removal efficiencies of more than 99% and 77% are obtained for SO2 and NOx, respectively. From these results, it is confirmed that this wet-type discharge plasma reactor is useful for the simultaneous removal of nanoparticles, NOx, and SOx.
