In this paper, a novel combined non-thermal plasma photolysis reactor was employed to decompose H2S
in gas stream at atmospheric pressure. The filling gas pressure, applied voltage, and inlet H2S concentration
were altered with the aim to improve the energy efficiency. High H2S removal efficiency could be
achieved with sufficient but reasonable energy density deposited on gas stream. The energy consumption
per molecule of destructed H2S, 26 ± 1.5 eV/molecule, was relatively low as compared with those values
reported for plasma reactor operated at non-vacuum pressures and diluted condition. Furthermore, the
H2S decomposition mechanism was proposed as direct electron attachment, radicals and excited species
attack and photo-dissociation based on byproducts analysis by GC and IC. The results revealed the potential
for energy efficient destruction of H2S by combined plasma photolysis process.
In this paper, a novel combined non-thermal plasma photolysis reactor was employed to decompose H2Sin gas stream at atmospheric pressure. The filling gas pressure, applied voltage, and inlet H2S concentrationwere altered with the aim to improve the energy efficiency. High H2S removal efficiency could beachieved with sufficient but reasonable energy density deposited on gas stream. The energy consumptionper molecule of destructed H2S, 26 ± 1.5 eV/molecule, was relatively low as compared with those valuesreported for plasma reactor operated at non-vacuum pressures and diluted condition. Furthermore, theH2S decomposition mechanism was proposed as direct electron attachment, radicals and excited speciesattack and photo-dissociation based on byproducts analysis by GC and IC. The results revealed the potentialfor energy efficient destruction of H2S by combined plasma photolysis process.
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