Photocatalytic Degradation of Indigo Carmine in Aqueous Solutions by the Antibacterial Agent Pefloxacin and UVA

The kinetic characteristics of the photocatalytic degradation of Indigo Carmine using anti-bacterial agent pefloxacin were experimentally investigated with respect to the initial concentration of pefloxacin, concentration and PH. The photo blanching is found to be first order in both indigo and pefloxacin. The apparent pseudo first order arte constant is proportional to the initial concentration of the pefloxacin, also the Indigo Carmine is PH dependent and is found to be more effective at PH 10. So Indigo Carmine can be successes fully decolorized using pefloxacinas as a photo sensitizer. The oxidation products of Indigo Carmine were identified as Isatin using UVA. The blue coloration of Indigo Carmine was converted into a colorless solution after irradiation. We discover that, irradiating the solution of Indigo blue and pefloxacin causes the blue color of the organic dye to fade with the rate proportional to the concentration of the pefloxacin photosensitizer. A number of approaches were used for degradation of organic dye, the photochemical kinetic method described in this text is fast, sensitive and eliminate the need for sample preparation. Hence, this photochemical method can easily be automated using flow injection analysis so as to make it faster, easier and suitable for a number of organic dye detoxification.