Abstract
Changes in the forms of sulfur and oxygen consumed during the oxidation of hydrogen sulfide ions using activated carbon have yet to be elucidated fully. Therefore, in this study, an experiment on the oxidation of hydrogen sulfide ions in aqueous solution was carried out to investigate altered forms of the sulfur and oxygen consumed. The oxidation of hydrogen sulfide ions was promoted by activated carbon, and the oxidation of sulfur resulted in the formation of sulfate and thiosulfate ions. Additionally, X-ray photoelectron spectrometry indicated that elementary substances of sulfur adsorbed onto activated carbon. A material balance with an 84% abundance ratio of sulfur oxides and 82% oxygen consumption based on stoichiometry was calculated. The oxidized sulfur compound was confirmed to be safer than hydrogen sulfide ions.
