Environmental Sciences Bulletin of The Korean Environmental Sciences Society

The Korean Environmental Sciences Society (한국환경과학회)
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Photodegradation of Rhodamine B in $TiO_2$ suspension

  • Na, Young-Soo (Department of Chemical Engineering Pusan National University) ;
  • Kim, Ji-Hye (Department of Chemical Engineering Pusan National University) ;
  • Lee, Tae-Kyung (Department of Chemical Engineering Pusan National University) ;
  • Lee, Song-Woo (Department of Chemical Engineering Pusan National University) ;
  • Song, Seung-Koo (Department of Chemical Engineering Pusan National University)
  • Published : 2001.09.01
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Abstract

In recent years, rapid technological advances in the textile and dyeing industry have yielded benefits to society but have also generated new and significant environmental problems. The treatment alternatives applicable for the removal of color vary, depending upon the type of dye wastewater Advanced oxidation processes are considered to provide more permanent merits. One of these oxidation treatments attracting much attention is photocatalytic oxidation, which uses TiO$_2$ due to its non-toxic, insoluble liquid as well as a highly reactive nature under UV irradiation. This study sets out to demonstrate the effect of photocatalyst dosage, dye concentrations, pH and light intensity on color removal efficiency under aerobic conditions. The results of this study show Rhodamine B(RhB) was not decolorized when a dye solution was exposed only to air or treated by TiO$_2$ only In the presence of both TiO$_2$ and UV light, however, the presence of RhB decreased up to 95 % within 60minutes. The more addition TiO$_2$ and the more diluted dye solution, showed a higher removal rate.

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