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Jacob Ochieng Kitinya

Title: Evaluation of photocatalytic activity of magnetic zeolite/bismuth-manganese oxide composite in the degradation of distillery wastewater under UV-A irradiation

Jacob Ochieng Kitinya

Tshwane University of Technology, South Africa

Biography

Jacob Kitinya has a Master of Technology degree in Chemical Engineering and is a PhD candidate in Chemical Engineering, both from Tshwane University of Technology in South Africa. His research interests are in the field of adsorption, photocatalysis and computational programming.

Abstract

The photocatalytic activity of magnetic zeolite/bismuth-manganese oxide (MZ-BiMnO) composite in the degradation of distillery wastewater was evaluated in a fluidized bed photoreactor under UV-A radiation. The performance of the magnetic photocatalyst was determined in terms of photonic efficiency and the degradation efficiency. For the evaluation of the radiation absorbed by the photocatalyst suspensions, the optical properties of MZ-BiMnO were measured between 248 and 400 nm. The determined local UV light intensity in the fluidized bed photoreactor was used to determine the degradation kinetics for the distillery wastewater. The experimental kinetic data was well described by the Langmuir-Hinshelwood kinetic model. Chemical Oxygen Demand (COD) was used as a key performance parameter for the catalyzed UV/H2O2 process. The COD analysis results showed that upto 70% degradation efficiency was achieved after about 3 h irradiation time.