Decolorization of Diazo Dye Ponceau S by Fenton Process

Muhammad Muslim; Md. Ahsan Habib; Tajmeri Selima Akhter Islam; Iqbal Mohmmad Ibrahim Ismail; Abu Jafar Mahmood

doi:10.21743/

Authors

Muhammad Muslim Department of Chemistry, Faculty of Science, University of Dhaka, Dhaka 1000 Bangladesh Author
Md. Ahsan Habib Department of Chemistry, Faculty of Science, University of Dhaka, Dhaka 1000 Bangladesh Author
Tajmeri Selima Akhter Islam Department of Chemistry, Faculty of Science, University of Dhaka, Dhaka 1000 Bangladesh Author
Iqbal Mohmmad Ibrahim Ismail The Center of Excellence in Environmental Studies, Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia Author
Abu Jafar Mahmood Department of Chemistry, Faculty of Science, University of Dhaka, Dhaka 1000 Bangladesh Author

DOI:

https://doi.org/10.21743/

Keywords:

Diazo dye; Fenton process; decolorization; mineralization

Abstract

An attempt has been taken to decolorize and mineralize Ponceau S (PS), a diazo dye, in aqueous solution by Fenton process. Effects of solution pH, concentrations of H2O2, Fe(II) and PS on the decolorization of PS have also been studied through batch experiments. About 90% decolorization was found under the optimal conditions [PS]: [H2O2]: [Fe(II)] = 1:12:2 and [H2O2]/[Fe(II)] = 6 at pH 2.85 in 40 minutes. The overall results revealed that mineralization was rather slower as compared with the decolorization.