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Heterogeneous photocatalytic degradation of phenols in wastewater : a review on current status and developments

Ahmed, S., Rasul, M.G., Martens, W.N., Brown, R.J., & Hashib, M.A. (2010) Heterogeneous photocatalytic degradation of phenols in wastewater : a review on current status and developments. Desalination, 261(1-2), pp. 3-18.

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Abstract

In recent years, there has been an enormous amount of research and development in the area of heterogeneous photocatalytic water purification process due to its effectiveness in degrading and mineralising the recalcitrant organic compounds as well as the possibility of utilising the solar UV and visible spectrum. One hundred and twenty recently published papers are reviewed and summarised here with the focus being on the photocatalytic oxidation of phenols and their derivatives, predominant in waste water effluent. In this review, the effects of various operating parameters on the photocatalytic degradation of phenols and substituted phenols are presented. Recent findings suggested that different parameters, such as type of photocatalyst and composition, light intensity, initial substrate concentration, amount of catalyst, pH of the reaction medium, ionic components in water, solvent types, oxidising agents/electron acceptors, mode of catalyst application, and calcination temperatures can play an important role on the photocatalytic degradation of phenolic compounds in wastewater. Extensive research has focused on the enhancement of photocatalysis by modification of TiO2 employing metal, non-metal and ion doping. Recent developments in TiO2 photocatalysis for the degradation of various phenols and substituted phenols are also reviewed.

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92 citations in Web of Science®

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ID Code: 41760
Item Type: Journal Article
Keywords: Phenols, Substituted Phenols, Photcatalysis, Water Purification
DOI: 10.1016/j.desal.2010.04.062
ISSN: 0011-9164
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > MACROMOLECULAR AND MATERIALS CHEMISTRY (030300) > Physical Chemistry of Materials (030304)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CHEMICAL ENGINEERING (090400) > Wastewater Treatment Processes (090409)
Divisions: Past > Schools > Chemistry
Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2010 Elsevier
Deposited On: 24 May 2011 07:34
Last Modified: 01 Mar 2012 14:00

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