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Parametric and Optimization Studies on Oxytetracycline Photocatalytic Oxidation using Pelletized Titanium Dioxide

Author : Clacio, Jarid Ross Contante
Major Adviser : Bautista, Ramer P. 
Committee Members : Movillon, Jovita A.; Bambase Jr., Manolito E. 
Year : 2016
Month : December
Type : Thesis
Degree: BS
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Abstract

The photocatalytic oxidation of oxytetracycline was studied by considering the effects of varying parameters such as TiO₂ concentration (10% and 50%), initial oxytetracycline concentration (10 ppm and 50 ppm), initial pH (3.4 and 8.3) and type of light (UV and White light) to percent oxytetracycline reduction per mass of TiO₂ used. Statistical analysis showed that TiO₂ concentration, initial oxytetracycline concentration and the interaction between this two factors had significant effect on the percent oxytetracycline reduction. The parametric study yielded the coded regression model of ý = 34.94 − 23.50A − 13.82B + 10.36AB which suggest that the optimum percent oxytetracycline reduction of 45.03% can be achieved by setting the initial oxytetracycline concentration to 41.08 ppm and using 10% TiO₂ pellet concentration and either UV or white light under pH range of 3.4 to 8.3. The reusability of the catalyst pellets showed a decrease in the effectivity for photocatalysis as the number of reuse was increased. The treated oxytetracycline solution was characterized in terms of color, pH and temperature rise and found to not meet the DENR effluent standards.

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