Comparative mineralization of Basic Red 18 with electrochemical advanced oxidation processes


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GÖZMEN B., SÖNMEZ Ö., Sozutek A.

JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, cilt.83, ss.93-105, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 83 Konu: 1
  • Basım Tarihi: 2018
  • Doi Numarası: 10.2298/jsc170227095g
  • Dergi Adı: JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
  • Sayfa Sayısı: ss.93-105

Özet

In this study, the role of electrochemical oxidation processes, including the electro-Fenton, the electro-persulfate (PS), and the electro/FeII /PS processes, in the removal of Basic Red 18 (BR18) from aqueous solutions was investigated. It was found that the electro-PS process successfully removes colour, but after 5 h, it produced only 75 % mineralization. In the same conditions, more effective mineralization was achieved by the electro/FeII/PS process than by the electro-Fenton method. At pH levels of 3.0 and 5.7, very effective mineralization results were produced by the electro/FeII/PS process. Moreover, the maximum mineralization current efficiency values were obtained by the electro/ FeII/PS process. The mineralization efficiency of the electro/FeII/PS process was determined to be 97 % under the following conditions: BR18 initial dye concentration of 100 mg L-1, pH of 5.7, contact time of 5 h, PS concentration of 10 mM, Fe2+ concentration of 0.2 mM, and a sodium sulfate concentration of 0.05 M.