ADVANCED OXIDATION OF LANDFILL LEACHATE BY ELECTRO-FENTON PROCESS USING BOX-BEHNKEN STATISTICAL EXPERIMENT DESIGN

ÇOKAY E.

FRESENIUS ENVIRONMENTAL BULLETIN, cilt.25, sa.5, ss.1667-1679, 2016 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 25 Sayı: 5
  • Basım Tarihi: 2016
  • Dergi Adı: FRESENIUS ENVIRONMENTAL BULLETIN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
  • Sayfa Sayıları: ss.1667-1679
  • Anahtar Kelimeler: landfill leachate, electro-Fenton, Box-Behnken, RESPONSE-SURFACE METHODOLOGY, WASTE-WATER, ELECTROCHEMICAL OXIDATION, ACTIVATED CARBON, OPTIMIZATION, REAGENT, REACTOR, MINERALIZATION, PARAMETERS, REMOVAL
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

In this study, advanced oxidation of landfill leachate by electro-Fenton process was investigated by batch experiments. Effects of operating parameters namely the concentrations of H2O2, pH and DC current values on treatment of landfill leachate were investigated by using Box-Behnken statistical experiment design and the surface response analysis. In this content, treatment of landfill leachate by electro-Fenton oxidation was evaluated by determining total organic carbon (TOC), chemical oxidation demand (COD) and color removals. Electro-Fenton method can effectively remove organic compounds from landfill leachate. Removal of organic matters in landfill leachate increased with increasing H2O2 concentration up to a certain level. COD and TOC removals were more profoundly affected by pH and DC current values while color removal was mainly affected by pH and hydrogen peroxide doses. Thus the optimal H2O2/pH/DC current resulting in the maximum COD (96%), TOC (50%) and color (80%) removal efficiencies was found to be 2000/3/3 (mgL(-1)).