Decolorization of Rhodamine B Using UV/$TiO_2$ System

UV/$TiO_2$ 시스템을 이용한 Rhodamine B의 색도 제거

  • 박영식 (대구대학교 보건과학부 환경위생학전공) ;
  • 나영수 (부산대학교 화학공학과) ;
  • 안갑환 (부산가톨릭대학교 산업환경시스템학부)
  • Published : 2002.12.01

Abstract

The photocatalytic decolorization of the Rhodamine B (RhB) was studied using a UV/TiO$_2$ reactor. Yakuri titanium dioxide(anatase) was used as the suspended photocatalyst and proved to be effective for decolorization irradiated with UV light (254 mm). The photocatalyzed dioxide concentrations, light intensity and air flow rates. In 0.01 mM RhB, color could be completely photodegraded after 3 hours. Absorption spectrum of an aqueous solution containing RhB showed a continued diminution of the RhB concentration in the solution bulk : concomitantly, no new absorption peaks appeared. This confirmed the decolorization of RhB, i.e., the break up of the chromopore. The optimum loaded titanium dioxide for the decolorization was 0.75 g/(equation omitted). The light intensity showed exponential decay with distance. The decay of light intensity of RhB solution showed different tendency from TiO$_2$. These results suggested that the photocatalytic decolorization of dyes may be available method for decolorizing in wastewater.

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