EVALUATION OF OPERATIONAL PARAMETERS AND ITS RELATION ON THE STOICHIOMETRY OF FENTON'S OXIDATION TO TEXTILE WASTEWATER


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İlhan F. , Yetilmezsoy K. , Kabuk H. A. , Ulucan K. , Coskun T. , Akoglu B.

CHEMICAL INDUSTRY & CHEMICAL ENGINEERING QUARTERLY, cilt.23, ss.11-19, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 23 Konu: 1
  • Basım Tarihi: 2017
  • Doi Numarası: 10.2298/ciceq150907048i
  • Dergi Adı: CHEMICAL INDUSTRY & CHEMICAL ENGINEERING QUARTERLY
  • Sayfa Sayıları: ss.11-19

Özet

The operation conditions for the implementation of the Fenton process are of utmost importance because there are problems related to the proportion of H2O2 dosage to COD and Fe2+ dosage to the specified H2O2 amount. The relevant literature shows that COD/H2O2 ratios range between 0.0084 and 113.9. Similarly, the COD/Fe2+ ratio varies between 0.079 and 2926, while the H2O2/Fe2+ ratio varies between 0.09 and 287 Moreover, the ratio of the maximum value to the minimum value used in the operations on the basis of COD is 13560 for COD//H2O2 (0.0084-113.9), 2210 for COD/Fe2+ (0.079-174.7), and finally 3190 for H2O2/Fe2+ (0,09-287). The aim of this study was to re-evaluate these values that significantly differ from each other with specific emphasis on textile wastewater and considering stoichiometric ratios. Results showed that values ranging between 0.43 and 40 for COD/H2O2 and those ranging between 0.75 and 3.0 for H2O2/Fe2+ are more suitable. The results showed that in a Fenton process conducted by dosing H2O2 at different times, the TOC reduction efficiencies increased from 80.8 up to 88.9%. Similarly, the color reduction efficiency also rose from 96.5 to 98.7%.