Journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 102, Issue -, Pages 148-164Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2012.02.021
Keywords
Activated carbon; Catalysis; Catalyst support; Decolorization; Dye; Textile wastewater
Categories
Funding
- Spanish Ministry of Science and Innovation [CTM2008-03338]
- Catalan government [2007ITT-00008]
- Rovira i Virgili University
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During the last decade, several physico-chemical and biological techniques have been developed to remove colour from textile wastewaters. Some of these techniques rely on and many will profit from activated carbon (AC). The role of AC is versatile: (1) it acts as a dye adsorbent, not only in straightforward adsorption processes but also in AC-enhanced coagulation and membrane filtration processes: (2) it generates strong oxidising agents (mostly, hydroxyl ((OH)-O-center dot) radicals) in electrochemical dye oxidation; (3) it catalyses (OH)-O-center dot production in advanced oxidation processes; (4) it catalyses anaerobic (azo) dye reduction and supports biofilm growth in microbial dye removal. This paper reviews the role of AC in dye decolourisation, evaluates the feasibility of each AC-amended decolourisation technique and discusses perspectives on future research. (C) 2012 Elsevier Ltd. All rights reserved.
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