Optimization of energy costs in the pretreatment of olive mill wastewaters by electrocoagulation


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Coskun T. , İlhan F. , Manav Demir N. , Debik E. , Kurt U.

ENVIRONMENTAL TECHNOLOGY, cilt.33, ss.801-807, 2012 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 33
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1080/09593330.2011.595829
  • Dergi Adı: ENVIRONMENTAL TECHNOLOGY
  • Sayfa Sayıları: ss.801-807

Özet

In this study, the electrocoagulation process was evaluated as a pretreatment process for olive mill wastewaters. Aluminium (Al) and iron (Fe) electrodes, several contact times and 0.5, 1 and 2 A currents were used to compare chemical oxygen demand (COD) removal efficiencies for each case. The optimum contact time and current were 45 minutes and 1 A, respectively, which resulted in a COD removal of 58.7% with an Al electrode. Experimental data from distinct operational conditions were used to fit a model for COD removal efficiencies. Energy consumption was also predicted. Under optimum operational conditions, the treatment cost was approximately (sic)0.13 kg(-1) CODremoved and (sic)4.41 m(-3). The results showed that the electrocoagulation process was a cost-effective method for the pretreatment of olive mill wastewaters.