In this study, the possibility of removing magenta-MB by persulphate (PS)-based advanced oxidation process has been evaluated. PS was activated by chemical means with the use of ferrous ion to produce sulphate radical (SO Å 4 ). Experiments were conducted in batch mode. The effect of operational parameters such as PS dosage (varied from 40 to 140 mg/L), ferrous ion dosage (varied from 0 to 100 mg/L), pH (both acidic and basic) and contact time were studied. For an initial dye concentration of 100 mg/L, maximum decolourization efficiency of 96.33% was obtained within 30 min with a PS dosage of 100 mg/L and ferrous ion dosage of 60 mg/L. At the optimum conditions, TOC removal efficiencies of 55.23 and 61.2% were obtained in 30 and 60 min, respectively. The effect of inorganic ions (Cl − , F − and SO 2À 4 ) on the treatment efficiency was also evaluated. It was found that the inhibiting effect due to the presence of inorganic ions followed the order as: F − >> Cl − > SO 2À 4 . Very good removal efficiency obtained with very low chemical dosage (PS and Fe 2+ ) makes iron-activated PS a good alternative for the removal of dye from aqueous solution.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.