Design of a MT-DBD reactor for H₂S control

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 in?uence of various factors upon H₂S removal efficiency (η_H2S) 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 η_H2S 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 ms⁻¹,30 mgm⁻³ and five layers, correspondingly. The average rate constant for the decomposition of hydrogen sul?de was 0.206 g m⁻³ s⁻¹. In addition, we also presented the optimized working conditions, by-product analysis and decomposition mechanism.