Oxidative decolourization of Rhodamine-B using sea nodule residue

Abstract

The characterization of sea nodule leached residue catalyst has been done by various physicochemical methods, such as XRD, FT-IR and surface area measurement. The oxidative decolourization of Rhodamine-B (Rh-B) by sea nodule residues is studied in batch technique. The extent of decolourization increases with increase in catalyst dose while decreases with the increase in initial <i>p</i>H of the solution and dye concentration. More than 93% of 5 mg/L Rh-B is decolourized within 1 h with a catalyst dose 0.5 gm/L at <i>p</i>H ~ 3.