title: Wet oxidation of acid brown dye by hydrogen peroxide using heterogeneous catalyst Mn-salen-Y zeolite: a potential catalyst.
abstract: Catalytic wet hydrogen peroxide oxidation of acid dye has been explored in this study. Manganese(III) complex of N,N'-ethylene bis(salicylidene-aminato) (salenH(2)) has been encapsulated in super cages of zeolite-Y by flexible ligand method. The catalyst has been characterized by FT-IR, XRD, TG/DTA and nitrogen adsorption studies. The effects of various parameters such as pH, catalyst and hydrogen peroxide concentration on the oxidation of dye were studied. The results indicate that after 20 min at 30 degrees C, 0.175 M H(2)O(2) and 3g/L catalyst, about 90% dye removal was obtained. These studies indicate that manganese-salen complex immobilized on zeolite framework can act as a good heterogeneous catalyst for removal of dye from wastewaters.
authors.affiliation: Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai 600020, India.
authors.forename: Rathinam
authors.initials: R
authors.lastname: Aravindhan
authors.forename: Nishtar Nishad
authors.initials: NN
authors.lastname: Fathima
authors.forename: Jonnalagadda Raghava
authors.initials: JR
authors.lastname: Rao
authors.forename: Balachandran Unni
authors.initials: BU
authors.lastname: Nair
mesh_terms: D002384:Catalysis; D002614:Chelating Agents / Q000737:chemistry*; D004396:Coloring Agents / Q000302:isolation & purification*; D005029:Ethylenediamines / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D007700:Kinetics; D008345:Manganese / Q000737:chemistry; D010084:Oxidation-Reduction; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D017641:Zeolites / Q000737:chemistry*
chemical_list: D002614:Chelating Agents; D004396:Coloring Agents; D005029:Ethylenediamines; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D017641:Zeolites; D008345:Manganese; C011452:disalicylaldehyde ethylenediamine; D006861:Hydrogen Peroxide