Ultra-violet light and titanium dioxide catalyzed oxidation of red dye-79
AuthorAdharapurapu, Krishna, 1965-
AdvisorSierka, Raymond A.
MetadataShow full item record
PublisherThe University of Arizona.
RightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
AbstractThis research focused on the color destruction of red dye-79 in aqueous solution. Red dye-79 is a typical pollutant in the textile industrial wastewater streams. A 50 parts per million (ppm) aqueous solution of this dye was used for all experiments. Although, there are many conventional techniques for the treatment, the research investigated a new methodology, which uses the synthetic ultraviolet radiation (254 nanometers) in combination with an undoped semi-conductor powder titanium dioxide (TiO₂) anatase for the photo-catalytic destruction of inorganics and organic moieties responsible for color in aqueous solution of red dye-79. Also, investigated were the effects of the oxidant hydrogen peroxide (H₂O₂) added externally to enhance the reaction kinetics for color destruction. Ultraviolet absorbance readings at 512 nanometers were employed to quantify the color destruction. The effects of reaction parameters catalyst (TiO₂), oxidant (H₂O₂), alkalinity and, dye concentrations as well as pH, on dye destruction kinetics were also quantified.