Mass transfer in titania photocatalytic membrane reactors

Dijkhuis, D.G. (2017) Mass transfer in titania photocatalytic membrane reactors.

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Abstract:This report presents a mass transfer model for plasma oxidized TiO2 membranes in a dead-end photocatalytic membrane filtration module. The model takes into account several parameters such as membrane dimensions, porosity, a first order reaction and convective and diffusive mass transfer. Experimental data was acquired for several different membrane dimension and flowrates. By applying the experimental data on the mass transfer model unkown parameters could be calculated. When having exact dimensions and porosity of a membrane, the model is capable to predict the eventual concentration and concentration polarization effects. With help of the mass transfer model, a sensitivity analysis was made to describe the impact of several parameters on the degredation and concentration polarization. By fitting the experimental data, a reaction rate constant in the order of 10-2 s-1 was acquired. With a methylene blue degradation of up to 84\% and relative low trans membrane pressures below 1 bar, plasma oxidized membranes have shown great potential for possible future applications.
Item Type:Essay (Master)
Faculty:TNW: Science and Technology
Subject:35 chemistry
Programme:Chemical Engineering MSc (60437)
Link to this item:http://purl.utwente.nl/essays/73100
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