The electrochemical degradation of linearalkylbenzenesulfonate (LAS) on platinum electrode

Zor S., Yazici B., Erbil M., Galip H.

WATER RESEARCH, vol.32, no.3, pp.579-586, 1998 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 32 Issue: 3
  • Publication Date: 1998
  • Doi Number: 10.1016/s0043-1354(97)00305-9
  • Journal Name: WATER RESEARCH
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.579-586
  • Çukurova University Affiliated: Yes

Abstract

The electrochemical behaviour of linearalklybenzenesulfonate (LAS) on Pt electrode has been investigated in 0.05 M Na2SO4 and in 0.1 M NaCl at pH = 8 by potentiokinetic method and by electrolysis. The anodic and cathodic semilogarithmic current-potential curves were obtained between -1.6 V - +1.6 V. The experimental discharge potentials (Eexp.) have been determined by means of current-potential curves obtained by electrolysis method between 0-3 V. The percentages of surface active material remaining in solution after specified time periods (0-6 h) were determined for different initial concentrations of LAS (30, 150; 300 ppm) by using the potentiostat (+ 1.6 V) and by applying constant potentials of 20 V via a direct current source. The concentrations of LAS in solution was determined by UV spectrophometer. Results indicate that when a potential of 20 V is applied on the electrodes the concentrations of surface active materials (LAS) decreases by 40-50% at the end of 6h in 0.05 M Na2SO4 solution. (C) 1998 Elsevier Science Ltd. All rights reserved.