NDLI: Solar photocatalysis for water disinfection: materials and reactor design

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Catalysis Science & Technology Vol - 4 Issue - 4

Catalysis Science & Technology Vol - 4 Issue - 3

Catalysis Science & Technology Vol - 4 Issue - 2

Catalysis Science & Technology Vol -3

Catalysis Science & Technology Vol -2

Catalysis Science & Technology Vol -1

Solar photocatalysis for water disinfection: materials and reactor design

Content Provider	Royal Society of Chemistry (RSC)
Author	Polo-López, M. Inmaculada Ibáñez, Pilar Fernández Pillai, Suresh C. Byrne, J. Anthony McGuigan, Kevin G. Dionysiou, Dionysios D. Keane, Donal A. O'Shea, Kevin Dunlop, Patrick S. M.
Copyright Year	2014
Abstract	As of 2010, access to clean drinking water is a human right according to UN regulations. Nevertheless, the number of people living in areas without safe drinking water is predicted to increase by three billion by the end of this decade. Several recent cases of E. coli and Cryptosporidium contamination in drinking water are also reported in a number of advanced countries. Therefore ensuring the potability of drinking water is urgent, but highly challenging to both the developing and developed world in the future. A combination of solar disinfection and photocatalysis technology offers real possibilities for removing lethal pathogenic microorganisms from drinking water. The time taken for the conventional SODIS process can be greatly reduced by semiconductor (e.g. TiO2, ZnO, nano-heterojunctions) based photocatalysis. This review addresses the fundamental reaction mechanism, advances in materials synthesis and selection and recent developments in the reactor design for solar energy driven photocatalysis using titanium dioxide. The major advantage of using photo-reactors is that they enhance disinfection by increasing photon flux into the photocatalyst. Other major factors affecting such efficiency of solar-based photocatalysis such as the illuminated volume/total volume ratio, catalyst load and flow rate, are discussed in detail. The significance of using immobilised catalysts over the catalyst powder in slurries is also highlighted. It is noted that, despite encouraging early field studies, the commercialisation and mass production of solar photocatalysis systems remains highly challenging. Recommendations for future directions for addressing issues such as mass transfer, requirement of a standard test method, photo-reactors design and visible light absorption by TiO2 coatings are also discussed.
Starting Page	1211
Ending Page	1226
Page Count	16
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	4
Issue Number	5
Journal	Catalysis Science & Technology
DOI	10.1039/c4cy00006d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Cryptosporidium Semiconductor Escherichia coli Photocatalysis Solar energy Reaction mechanism UN Coli World Forum for Harmonization of Vehicle Regulations Titanium dioxide Photon
Content Type	Text
Resource Type	Article
Subject	Catalysis

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Solar photocatalysis for water disinfection: Materials and reactor design.

Programme of work of the World Forum for Harmonization of Vehicle Regulations (WP.29) and its subsidiary bodies :: note : by the Secretariat [2009]

Disinfection of the Water Borne Pathogens Escherichia coli and Staphylococcus aureus by Solar Photocatalysis Using Sonochemically Synthesized Reusable Ag@ZnO Core-Shell Nanoparticles

Revised programme of work of the World Forum for Harmonization of Vehicle Regulations (WP.29) and its subsidiary bodies :: note : by the Secretariat [2009]

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Kinetic modelling of Escherichia coli inactivation in a photocatalytic wall reactor

Photocatalysis of Titanium Dioxide for Water Disinfection: Challenges and Future Perspectives

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Solar photocatalysis for water disinfection: materials and reactor design

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