An efficient photo reactor design and its application in photo-oxidation of acetone
DOI:
https://doi.org/10.52493/j.cote.2023.1.57Keywords:
Acetone, photoreactor, photooxidation, photodecompositionAbstract
The rate of CO2 production obtained from the photodecomposition of acetone with different loadings of TiO2 as a photocatalyst is remarkable. This study aims to develop a flow-type photo reactor with excellent contact between all the reacting species. To achieve total mineralization with minimal waste, the flow rate of gases was controlled. During this investigation, the acetone was fed at the rate of 2.8 mmol h-1 and the air flow rate was maintained at 4.3 Lh-1. The reaction was carried out at near room temperature as the cold cathode lamps increased temperature very slowly to 63 ᵒC. No CO2 was produced either without light or catalyst indicating a photocatalytic reaction. There was a proportional increase in the production of CO2 with an increase in TiO2 loading. A maximum rate of 5.75 ± 0.07 mMh-1 for CO2 production was achieved with a catalyst loading of 5 mg/gbeads. Increasing the catalyst loading above 5 mg/g showed a decrease in CO2 production rate which can be attributed to reduced contact between light and catalyst. This technique used here can be adopted for the decomposition of various Volatile Organic Compounds (VOCs).
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Copyright (c) 2023 Emmanuel A. Kamba, Daniel I. Ugwuja, Emmanuel A. Yerima, Godwin O. Egah
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