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Decolourisation of Reactive Orange 16 by activated carbon and copper oxide catalysts supported on activated carbon


Citation

Abdullah, Abdul Halim and Wong, Wan Yuan and Yaziz, Mohammad Ismail (2010) Decolourisation of Reactive Orange 16 by activated carbon and copper oxide catalysts supported on activated carbon. Journal of Physical Science, 21 (2). pp. 29-40. ISSN 1675-3402; ESSN: 2180-4230

Abstract

Decolourisation of Reactive Orange 16 (RO16) dye by HNO3-modified activated carbons (ACs) and a copper oxide catalyst supported by modified AC (Cu-Ac) were investigated. The percentage of colour removal for AC modified with 12 M HNO3 acid (19%) was found to be lower than that of AC modified using 4 M and 8 M HNO3, which are 23% and 22%, respectively. The Cu-AC, prepared by impregnating the 4 M HNO3-modified AC with copper nitrate solution for a 5 wt% of Cu followed by calcination at 500°C in an N2 atmosphere, shows the highest percentage of removal (63%) compared to the modified and the heat-treated modified AC. Decolourisation of RO16 by the Cu catalyst increases in the presence of H2O2 and UV-light. The decolourisation efficiency of the catalyst under four different conditions was observed to have the following order: Cu-AC/H2O2/UV > Cu-AC/H2O2 > Cu-ACN/UV ≈ Cu-AC.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Publisher: Penerbit Universiti Sains Malaysia
Keywords: Modified activated carbon; Copper catalyst; Decolorization; Reactive Orange 16
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 18 Jun 2015 01:24
Last Modified: 29 Nov 2016 05:01
URI: http://psasir.upm.edu.my/id/eprint/13875
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