Water purification in a solar reactor incorporating TiO2 coated mesh structures

Journal Article (2019)
Author(s)

ASM El-Kalliny (TU Delft - Sanitary Engineering)

Alireza H. Rivandi (Student TU Delft)

Sibel Uzun (Turkish Ministry of Health, TU Delft - ChemE/Product and Process Engineering)

J. R. Van Ommen (TU Delft - ChemE/Product and Process Engineering)

Henk W. Nugteren (TU Delft - ChemE/Product and Process Engineering)

L. C. Rietveld (TU Delft - Sanitary Engineering)

P.W. Appel (TU Delft - Sanitary Engineering)

Research Group
Sanitary Engineering
Copyright
© 2019 A.S.M. Elkalliny, Alireza H. Rivandi, S. Uzun, J.R. van Ommen, H.W. Nugteren, L.C. Rietveld, P.W. Appel
DOI related publication
https://doi.org/10.2166/ws.2019.052
More Info
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Publication Year
2019
Language
English
Copyright
© 2019 A.S.M. Elkalliny, Alireza H. Rivandi, S. Uzun, J.R. van Ommen, H.W. Nugteren, L.C. Rietveld, P.W. Appel
Research Group
Sanitary Engineering
Issue number
6
Volume number
19
Pages (from-to)
1718-1725
Reuse Rights

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Abstract

The rate of photocatalytic oxidation of contaminants in drinking water using an immobilized catalyst can be increased by properly designing the catalyst structure. By creating a solar reactor in which meshes coated with TiO2 were stacked, we demonstrated that degradation of humic acids with four superimposed stainless steel meshes was up to 3.4 times faster than in a single plate flat-bed reactor. Incorporation of TiO2 coated mesh structures resulted in a high specific photocatalytically active surface area with sufficient light penetration in the reactor, while the coated area for one mesh was 0.77 m2 per m2 projected area. This brought the photocatalytic efficiency of such reactors closer to that of dispersed-phase reactors, but without the complex separation of the very fine TiO2 particles from the treated water.