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Decolorization of Rhodamine B by Fenton, Fonton-like and Photo-Fenton-like Oxidation

펜톤, 펜톤-유사 및 광-펜톤-유사 반응을 이용한 Rhodamine B의 탈색

  • 김동석 (대구가톨릭대학교 환경과학과) ;
  • 박영식 (대구대학교 보건과학부)
  • Published : 2007.04.30

Abstract

The chemical and photochemical decolorization of Rhodamine B (RhB) in water has been carried out by Fenton, Fenton-like and photo-Fenton-like process. The effect of applied $H_2O_2,\;Fe^{2+}$ dosage (Fenton process), $H_2O_2,\;Fe^{\circ}$ dosage (Fenton-like and photo-Fenton-like process), UV light power (photo-Fenton-like process) pH (all processes) have been studied. The results obtained showed that more than 98% of color removal was obtained for the RhB solutions in every process. However, Fenton-like process was not suitable for the color removal of RhB because Fenton-like process was required much more reagents than Fenton and photo-Fenton-like process. The Fenton and photo-Fenton-like process showed similar reagents need. Optimum pH for three processes in this study is about pH 3. The relative order of sensitivity for pH of each process was: Fenton-like > photo-Fenton-like > Fenton.

Keywords

Fenton;Fenton-like;photo-Fenton-like;optimum condition;pH

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