00000ctm a22000004i 4500 UP-99796217611762134 Buklod 20150915170711.0 m |o d | ta 150915s2015 xx d r |||| u| (iLib)UPD-00249806787 DENG rda eng DMLUC LG 995 2015 E653 A73 Aranzamendez, Graziel L. author. Photocatalytic oxidation of acetaminophen (ACT) using potassium peroxodisulfate (K2S2O8)-modified TiO2 photocatalyst by Graziel L. Aranzamendez ; Mark Daniel G. de Luna, adviser ; Ming-Chun Lu, co-adviser. Quezon City College of Engineering, University of the Philippines Diliman 2015. x, 91 leaves illustrations 28 cm. text rdacontent unmediated rdamedia volume rdacarrier Thesis (M.S. in Environmental Engineering)--University of the Philippines Diliman June 2015. Available to the general public. Acetaminophen (ACT) is a globally prescribed analgesic and anti-inflammatory drug. In recent years, traces of unaltered ACT have been detected in conventional wastewater treatment effluent discharge. In this study, K2S2O8-modified TiO2 photocatalyst was synthesized and used to degrade ACT in aqueous solution under visible light irradiation. The effects of dopant amount, calcination temperature and calcination time on the properties and photocatalytic activity of the synthesizedcatalyst under visible light were investigated. Physical and chemical properties of the photocatalysts were analyzed using X-ray diffraction (XRD), Ultraviolet-visible light diffuse reflectance spectroscopy (UV- vis DRS), Brunauer-Emmett-Teller (BET) method, and X-ray photoelectron spectroscopy (XPS). K2S2O8-modified TiO2 having 0.50 wt % KaS2O8 as dopant and calcined at 300°C for 3 h removed 100% ACT with Kapp = 8.39 x 10-3 min-1. In the second phase of the study, effects of initial ACT concentration, catalyst dose, solution pH, and system temperature on the photocatalytic activity of K2S2O8-modified TiO2 were evaluated and the same batch reactor setup was utilized. After 9 h of reaction, 100% ACT degradation was achieved using 0.1 mM initial ACT concentration, catalyst dose of 2 g/L, initial pH of 9.0 and system temperature of 22°C (room temperature). The computed kapp for the reaction is equal to 7.29 x 10-3 min-1. Water Purification Photocatalysis. Water Purification Irradiation. Sewage Purification Irradiation. de Luna, Mark Daniel G. adviser. Lu, Ming-Chun co-adviser. FI UPD DARCHIVES LG 995 2015 E653 A73 UPD DENG-II LG 995 2015 E653 A73 Thesis