Parametric Study on the Photocatalytic Degradatioon of Oxytetracycline using Zinc Oxide-PANI (ZnO-PANI) Composite as Photocatalyst

Author : Aguilar, Johnwin Enrico Pacate
Major Adviser : Bautista, Ramer P. 
Major Co-Adviser : delete if not applicable
Committee Members : Arocena, Rhebner E.; Bambase Jr., Manolito E.; Herrera, Marvin U.
Year : 2016
Month : December
Type : Thesis
Degree: BS
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The parametric study on the photocatalytic treatment of oxytetracycline (OTC) using zinc oxide-polyaniline (ZnO-PANI) composite as catalyst was performed to compare the photoactivity of ZnO-PANI composite under ultraviolet (UV) light and visible light irradiation. Three controlled parameters were set namely: source of light (UV and visible), catalyst loading (20 and 60 mg/L) and initial OTC concentration (50 and 150 ppm) to determine the effect on the removal of OTC. ZnO-PANI composite was already prepared beforehand by in-situ oxidative polymerization. Photocatalytic degradation of OTC lasted for 180 minutes inside a box to eliminate other sources of light. Analysis of Variance (ANOVA) was performed using the Design-Expert ® 7 software and it was determined that main effects of catalyst loading and initial OTC concentration as well as their interaction are significant in the removal of OTC in the solution. Highest OTC removal was achieved under low setting of catalyst loading and initial OTC concentration under UV and visible light with a value of 480.60 mg/g and 286.64 mg/g, respectively. Results showed that the coating PANI on the surface of ZnO improves the activity of ZnO under visible region because ZnO-PANI composite performed well under UV and visible light.

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