Continuous Production of Hydrogen Sulfide Gas

Abstract

This research was to design the experimental set using for continuously producing hydrogen sulfide gas. It was relied on the reaction between sodium sulfide and sulfuric acid. The production process was a fed-batch type by adding sodium sulfide solution at the concentration of 9 mg/mL into a synthesized bottle containing distilled water and sulfuric acid. The solution was added by injecting with syringe at 0.5 mL for every 40 sec and feeding with peristaltic pump at the rate of 0.75 mL/min. The result was found that hydrogen sulfide gas could be produced at the approximate concentration of 200 ppm starting from 88 sec to 12,651 sec (3 h 30 min 51 sec) with syringe injection and starting from 76 sec to 12,683 sec (3 h 31 min 23 sec) with peristaltic pump feeding. The experiment was operated on the laboratory table by treatment the effluent gas with sodium hydroxide solution at the concentration of 8 %.