Catalytic oxidation of tartrazine in the presence of radicals generated from potassium peroxymonosulfate using cobalt impregnated pillared montmorillonite

Abstract

In this work aluminum pillared clay impregnated with cobalt (CoAP) was tested as catalyst in the degradation of azo-dye tartrazine in the presence of potassium peroxymonosulfate (Oxone®). Aluminum pillared clay was synthesized -exchanged clay from Wyoming, USA (Na-Wy) using common procedure. The influence of Oxon®/catalyst ratio on catalytic performance was investigated. The cobalt impregnated pillared montmorillonite was found to be promising catalyst for dye decolorization.