The Permeation of High Concentration Hydrogen Sulfide (H2S) Gas Using PTFE (Polytetrafluoroethylene) and PVDF (Polyvinylidene Fluoride) membranes

Abstract

Hydrogen sulfide (H₂S) is a toxic, corrosive, and flammable gas. The presence of H₂S gas can be reduced by a permeation method using PTFE (Polytetrafluoroethylene) membranes and PVDF (polyvinylidene fluoride) membranes. This H₂S gas passed through the membrane and was then captured by the SAOB (Sulfide Anhydride Oxidant Buffer) in S2- species form. A visible spectrophotometer was applied for the analysis of passed H₂S gas. Using a PTFE membrane, the optimum flow rate was obtained at 14.71 mL/min, with a mass flux of 0.825 kg/m2.hour, permeability coefficient of 0.696 kg/m².hour.bar, and percent removal of H₂S gas was 88.14%. The optimum flow rate for the SAOB was obtained at a rate of 0.30 mL/min with a mass flux of 0.843 kg/m².hour and a percent removal of H₂S gas of 89.98%. Based on the results obtained on the PVDF membrane, the mass flux produced in the optimization of H₂S gas is 0.742 kg/cm².hour, and the optimization of the SAOB solution is 0.754 kg/cm².hour. The resulting permeability coefficient value is 0.741 kg/cm².hour. The results indicate that this study can remove H2S gas at the optimum H₂S gas flow rate of 4.76 mL/minute of 94.89% and the optimum SAOB flow rate of 0.3 mL/minute of 95.66%