A cleaner application on hydrogen sulfide

With the increasing industrial production, there was a significant number of toxic and harmful hydrogen sulfide (H 2 S) gas generated. Due to the industrial activities, converting H 2 S gas from the waste of industrial process is environmentally attractive. This paper focuses on the conversion of H 2 S to elemental sulfur (S°) and other sulfur species (i.e., sulfite ion (SO 3 2- ); sulfate ion (SO 4 2- ) using Fenton reagent. The effects of some reaction parameters such as Fe 2+  ion concentration, amount of hydrogen peroxide (H 2 O 2 ), reaction time, initial H 2 S concentration and, liquid-gas ratio on H 2 S conversion percentage were explored thoroughly. The results revealed that the increase of the Fe 2+  ion concentration and H 2 O 2  quantity could promote the conversion of H 2 S. Besides, the comparable results were recorded for each reaction parameter. An apparent positive effect was observed with increasing the amount of H 2 O 2  on H 2 S conversion. However, the conversion percentage was decreased while increased in the initial concentration of the H 2 S in the Fenton reactor. It was well accepted that the main conversion pathway of H 2 S was hydroxyl radical (•OH). Additionally, the oxidative reaction of H 2 O 2  on H 2 S is thought another removal pathway. The expected products are sulphuric acid and S°.