Applications of high frequency discharge electrodeless lamps in photolysis of air pollution prevention

摘要

The photolysis of H_2S and toluene was studied under UV irradiation emitted by self-made high frequency discharge electrodeless lamp with atomic mercury lines at 185/253.7 nm. Experiments results showed that HFDEL photolysis could efficiently eliminates the two pollutants. The initial toluene concentration can strongly affect the concentration of photogenerated O_3 from HFDEL and the efficiency and mass rate of destruction of toluene via HFDEL/MnO_2-impregnated GAC system. The removal efficiency (η_(H2)s) of H_2S was decreased with increasing initial H_2S concentration and increased slightly with gas residence time.η_(H,S) was increased dramatically with relative humidity from <5 to 43% while the concentration of oxygen in gas environments affected the removal of H_2S.