Journal of
Environmental Chemistry and Ecotoxicology

  • Abbreviation: J. Environ. Chem. Ecotoxicol.
  • Language: English
  • ISSN: 2141-226X
  • DOI: 10.5897/JECE
  • Start Year: 2009
  • Published Articles: 197

Full Length Research Paper

Electrochemical degradation of p-aminobenzoic acid β-naphthol azo dye in alkaline solution

P. Sarala and T. V. Venkatesha*
Department of Studies in Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta 577451, Karnataka, India.
Email: [email protected]

  •  Accepted: 22 February 2012
  •  Published: 22 March 2012



The potentiostatic as well as galvanostatic electrochemical degradation with copper (Cu) as working electrode for p-aminobenzoic acid β-naphthol azo dye in alkaline solution was examined. The electrolysis was carried out in undivided cell containing Cu as cathode, platinum (Pt) as anode and calomel as reference electrode. The UV-Visible absorbance and chemical oxygen demand (COD) values were used to monitor the electrochemical treatment process. Normalized absorbancy values were calculated. The electrochemical behavior of the dye was studied using cyclic voltammetry. The degradation mechanism was explained.


Key words: Galvanostatic, potentiostatic, copper, degradation, normalized absorbancy.