Design of a MT-DBD reactor for H2S control**Supported by programs of Research on the Technology and Equipment of Gaseous Pollutant Removal from the Emission of Household Garbage (15DZ12055904) and Jointly Decomposition of Odorous Compounds by Dielectric Combined with Excimer Ultraviolet Emission (21577023).

Abstract

This study aimed to discuss the removal of hydrogen sulfide (H2S) with non-thermal plasma produced by a multilayer tubular dielectric barrier discharge reactor, which is useful in the field of plasma environmental applications. We explored the influence of various factors upon H2S removal efficiency () and energy yield (Ey), such as specific energy density (SED), initial concentration, gas flow velocity and the reactor configuration. The study showed that we can achieve of 91% and the best Ey of 3100 mg kWh−1 when we set the SED, gas flow velocity, initial H2S concentration and layers of quartz tubes at 33.2 J l−1, 8.0 m s−1, 30 mg m−3 and five layers, correspondingly. The average rate constant for the decomposition of hydrogen sulfide was 0.206 g m−3 s−1. In addition, we also presented the optimized working conditions, by-product analysis and decomposition mechanism.