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Type: Journal article
Title: Recent developments in photocatalytic water treatment technology: A review
Author: Chong, M.
Jin, B.
Chow, C.
Saint, C.
Citation: Water Research, 2010; 44(10):2997-3027
Publisher: Pergamon-Elsevier Science Ltd
Issue Date: 2010
ISSN: 0043-1354
Statement of
Meng Nan Chong, Bo Jin, Christopher W.K. Chow and Chris Saint
Abstract: In recent years, semiconductor photocatalytic process has shown a great potential as a low-cost, environmental friendly and sustainable treatment technology to align with the “zero” waste scheme in the water/wastewater industry. The ability of this advanced oxidation technology has been widely demonstrated to remove persistent organic compounds and microorganisms in water. At present, the main technical barriers that impede its commercialisation remained on the post-recovery of the catalyst particles after water treatment. This paper reviews the recent R&D progresses of engineered-photocatalysts, photoreactor systems, and the process optimizations and modellings of the photooxidation processes for water treatment. A number of potential and commercial photocatalytic reactor configurations are discussed, in particular the photocatalytic membrane reactors. The effects of key photoreactor operation parameters and water quality on the photo-process performances in terms of the mineralization and disinfection are assessed. For the first time, we describe how to utilize a multi-variables optimization approach to determine the optimum operation parameters so as to enhance process performance and photooxidation efficiency. Both photomineralization and photo-disinfection kinetics and their modellings associated with the photocatalytic water treatment process are detailed. A brief discussion on the life cycle assessment for retrofitting the photocatalytic technology as an alternative waste treatment process is presented. This paper will deliver a scientific and technical overview and useful information to scientists and engineers who work in this field.
Keywords: TiO2
Water treatment
Photocatalytic reactors
Kinetic modelling
Water qualities
Life cycle analysis
Rights: Copyright © 2010 Elsevier Ltd All rights reserved.
DOI: 10.1016/j.watres.2010.02.039
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Appears in Collections:Aurora harvest
Chemical Engineering publications
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