Color Removal of Rhodamine B by Photoelectrochemical Process using Powder TiO$_2$

분말 광촉매를 이용한 광전기화학 공정에서 Rhodamine B의 색 제거

  • Kim, Dong-Seog (Department of Environmental Science, Catholic University of Daegu) ;
  • Park, Young-Seek (Department of Health & Environmental, Daegu University)
  • 김동석 (대구가톨릭대학교 환경과학과) ;
  • 박영식 (대구대학교 보건과학부)
  • Published : 2008.08.31

Abstract

The feasibility study for the application of the photoelectrocatalytic decolorization of Rhodamine B(RhB) was performed in the slurry photoelectrochemical reactor with powder TiO$_2$. The photoelectrocatalytic process was consisted of powder TiO$_2$, Pt electrode and three 8 W UV-C lamps. The effects of operating conditions, such as current, electrolyte, air flow rate and electrode material were evaluated. The experimental results showed that optimum TiO$_2$ dosage and current in photoelectrocatalytic process were 0.4 g/L and 0.02 A, respectively. It was found that the RhB could be degraded more efficiently by this photoelectrocatalytic process than the sum of the two individual oxidation processes(photocatalytic and electrolytic process). It demonstrated a synergetic effect between the photo- and electrochemical catalysis. Photoelectrocatalytic process was affected to air flow rate and optimum air flow rate was 2 L/min. The electrode material and NaCl effect of decolorization of RhB were not significant within the experiment conditions.

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