Preparation, characterization, and application of Ti/TiO2-NTs/Sb-SnO2 electrode in photo-electrochemical treatment of industrial effluents under mild conditions

  • Anantha N Subba Rao
  • Venkatesha T Venkatarangaiah
Research Article
  • 20 Downloads

Abstract

Ti/TiO2-NTs/Sb-SnO2 electrode was prepared by gradient pulsed electrodeposition, and its electrochemical properties were evaluated. The catalytic activity and reusability of the electrode were tested by electrochemical oxidation (EO) and photoelectrochemical oxidation (PEO) of organics present in textile industry wastewater (TWW) and coffee bean processing industry wastewater (CWW). COD removal of ~ 41% was achieved after 5-h electrolysis under a constant applied current density of 30 mA cm−2 for TWW and 50 mA cm−2 for CWW. Nearly 14 and 18% increment in COD removal was observed under PEO for TWW and CWW, respectively. The turbidity of TWW reduced from 15 to ~ 3 NTU and the turbidity of CWW reduced from 27 to ~ 3 NTU by both EO and PEO. The % COD removal observed after 5-h electrolysis remained consistent for 7 repeated cycles; however, the catalytic activity of the electrode reduced gradually. These results suggested that the Ti/TiO2-NTs/Sb-SnO2 can be a potential electrode for the treatment of industrial wastewater.

Keywords

TiO2 nanotube Textile industrial wastewater Mixed metal oxide Electrochemical oxidation Degradation 

Notes

Acknowledgments

The authors thank the Department of Chemistry, Kuvempu University, Shankaraghatta for the laboratory facilities and University Grants Commission, New Delhi, India for financial support [F.No.41-231/2012(SR)]. The authors would like to thank Dr. Pavithra M. K, Lecturer, Department of chemistry, Kuvempu University, Shankaraghatta, India and Ms. Shilpi Samiksha, Research Scholar, Department of Earth and Environmental Science, Indian Institute of Science Education and Research, Bhopal, India for their suggestions in the execution of experiments and data interpretation.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Anantha N Subba Rao
    • 1
  • Venkatesha T Venkatarangaiah
    • 2
  1. 1.Department of ChemistryBallari Institute of Technology and ManagementBallariIndia
  2. 2.Department of P.G. Studies and Research in Chemistry, School of Chemical SciencesKuvempu UniversityShimogaIndia

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