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 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 125 Issue: 4
  • Publication Date: 2009
  • Doi Number: 10.1111/j.1478-4408.2009.00202.x
  • Title of Journal : COLORATION TECHNOLOGY
  • Page Numbers: pp.234-241


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.