Water Reclamation by Heterogeneous Photocatalysis over Titanium Dioxide

Edited book (chapter)


El Saliby, Ibrahim, McDonagh, Andrew, Erdei, Laszlo and Shon, Ho Kyong. 2016. "Water Reclamation by Heterogeneous Photocatalysis over Titanium Dioxide." Ngo, Huu Hao, Gu, Wenshan, Surampalli, Rao Y. and Zhang, Tian C. (ed.) Green Technologies for Sustainable Water Management. United States. American Society of Civil Engineers. pp. 679-704
Chapter Title

Water Reclamation by Heterogeneous Photocatalysis over Titanium Dioxide

Book Chapter CategoryEdited book (chapter)
ERA Publisher ID1128
Book TitleGreen Technologies for Sustainable Water Management
AuthorsEl Saliby, Ibrahim, McDonagh, Andrew, Erdei, Laszlo and Shon, Ho Kyong
EditorsNgo, Huu Hao, Gu, Wenshan, Surampalli, Rao Y. and Zhang, Tian C.
Page Range679-704
Chapter Number19
Number of Pages26
Year2016
PublisherAmerican Society of Civil Engineers
Place of PublicationUnited States
ISBN9780784479780
9780784414422
Digital Object Identifier (DOI)https://doi.org/10.1061/9780784414422.ch19
Web Address (URL)https://ascelibrary.org/doi/10.1061/9780784414422.ch19
Abstract

This chapter presents the fundamentals and basic principles of water reclamation by heterogeneous photocatalysis (HP). The effects of important operational parameters on the overall treatment efficiency of photocatalytic system are addressed in the chapter in terms of photocatalyst loading, pollutant concentration, pH and temperature of water, dissolved oxygen, and light intensity. The most popular semiconductor used in HP is Titanium dioxide (TiO2) for being relatively inexpensive, chemically stable, and nontoxic. Most water remediation technologies generate a significant amount of wastewater that requires costly retreatment or discharge to evaporation ponds, rivers, and oceans. HP processes that decompose aqueous contaminants are highly dependent on the reaction conditions and the setup of photocatalytic reactors. Visible-light responsive photocatalysts promise a more effective utilization of solar energy. Doping and co-doping of titania is a practical approach toward obtaining improved visible-light active photocatalysts.

KeywordsBiochemical oxygen demand; Catalysis; Dissolved oxygen; Light; Oxides; Photocatalysis; Photocatalysts; Remediation; Semiconductor doping; Solar energy; Titanium; Titanium compounds; Titanium dioxide; Wastewater reclamation
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Byline AffiliationsUniversity of Technology Sydney
University of Southern Queensland
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