ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Determination of direct violet 51 dye in water based on its decolorisation by electrochemical treatment

Yavuz Sürme and Onur Burak Demirci

Department of Chemistry, Faculty of Science and Arts, Niğde University, 51100, Niğde, Turkey

E-mail: ysurme@nigde.edu.tr

Abstract: The decolorisation process of a synthetic textile dye, direct violet 51, was investigated in an aqueous solution using an electrochemical method in a batch electrochemical cell. Graphite electrodes were used as the anode and cathode for the decolorisation process. The parameters such as applied current, initial pH, solution conductivity, interfering ions, and effect of electrodes were optimised. It was found that the dye with an initial concentration of 20 mg L⁻¹ could be removed after 50 min using a current of 100 mA with colour removal of up to 94 %. The UV-VIS spectra of the dye were analysed prior to and after treatment and these confirmed that the conjugated systems were decomposed at a current of 100 mA. The optimised method was successfully applied to real wastewater samples.

Keywords: dye – decolorisation – electrolysis – UV-VIS spectrophotometry

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-014-0616-9

Chemical Papers 68 (11) 1491–1497 (2014)