Electrocoagulation of azo dye production wastewater with iron electrodes: process evaluation by multi-response central composite design

Arslan-Alaton I., Kobya M., Akyol A., Bayramoglu M.

COLORATION TECHNOLOGY, vol.125, no.4, pp.234-241, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 125 Issue: 4
  • Publication Date: 2009
  • Doi Number: 10.1111/j.1478-4408.2009.00202.x
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.234-241
  • Istanbul Technical University Affiliated: No


Central composite design was used to optimise electrocoagulation of CI Acid Blue 193 production wastewater. By applying a response surface quadratic model, the main process manipulators (effluent chemical oxygen demand, initial pH, electrical current density and treatment time) were optimised to achieve maximum colour, chemical oxygen demand and total organic compound removals. Analysis of variance indicated that the established polynomial regression models were significant and fitted the experimental data satisfactorily.