Parametric and kinetic studies on the UV-irradiated adsorption of aqueous oxytetracycline on synthesized alumina over aluminum sheets.

Date

7-2016

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Rhebner E. Arocena

Abstract

As antibiotics, such as oxytetracycline, become one of the emerging pollutants in aquatic resources, different methods to remove them in wastewaters are established. In this study, adsorption of aquaeous oxytetracycline (OTC) on aluminum oxide from aluminum sheets was investigated. Synthesized aluminum oxide was characterized using Fourier Transform Infrared Spectroscopy and Scanning Electron Microscope. Using Design Expert 10, physical parameters such as initial OTC concentration and the interaction effect of initial OTC concentration and intial pH were found to have significant effects on OTC uptake per gram of aluminum oxide in both adsorption set-ups (with and without UV irradiation) having p-values of 0.0146 and 0.0278, respectively for UV-irradiation adsorption, and p-values of 0.0010 and 0.0029, respectively for adsorption without UV irradiation. Higher OTC uptake was observed at higher pH, OTC uptake from lower to higher initial OTC concentration, though increasing, has a little change. Conversely, in the setup without UV irradiation, increasing OTC uptake with larger change was observed at higher pH in the analysis. The condition that had the highest adsorptive OTC uptake was found to be at initial OTC concentration of 50 ppm, initial oH of 6 and with UV light source value of 0.0883 mg/g. The adsorption kinetics of oxytetracycline onto alumina was found to follow a pseudo-second-order model. The calculated R² and Qc of the pseudo-second-order kinetic model are 0.9798 and 0.2170 mg/g, respectively. From the kinetics data, the adsorption reached equilibrium in about 18 hours.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2016 E62 /G66

Document Type

Thesis

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