Cobalt exchanged zeolites for heterogeneous catalytic oxidation of phenol in the presence of peroxymonosulphate

Shukla, Pradeep, Wang, Shaobin, Singh, Kailash, Ang, H. M. and Tadé, Moses O. (2010) Cobalt exchanged zeolites for heterogeneous catalytic oxidation of phenol in the presence of peroxymonosulphate. Applied Catalysis B: Environmental, 99 1-2: 163-169. doi:10.1016/j.apcatb.2010.06.013


Author Shukla, Pradeep
Wang, Shaobin
Singh, Kailash
Ang, H. M.
Tadé, Moses O.
Title Cobalt exchanged zeolites for heterogeneous catalytic oxidation of phenol in the presence of peroxymonosulphate
Journal name Applied Catalysis B: Environmental   Check publisher's open access policy
ISSN 0926-3373
1873-3883
Publication date 2010-08-31
Sub-type Article (original research)
DOI 10.1016/j.apcatb.2010.06.013
Open Access Status Not yet assessed
Volume 99
Issue 1-2
Start page 163
End page 169
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Formatted abstract
Several cobalt ion-exchanged zeolite catalysts based on ZSM-5, zeolite-A, and zeolite-X were prepared and tested for heterogeneous oxidation of phenol in the presence of various oxidants such as H2O2, persulphate, and peroxymonosulphate. It is found that Co-ZSM-5 is highly effective in heterogeneous activation of peroxymonosulphate to produce sulphate radicals but exhibits low activity for the activation of H2O2 and persulphate for organic oxidation in water. Co-zeolite-A and Co-zeolite-X show much faster reaction rate in homogeneous activation of peroxymonosulphate due to decomposition of the catalysts and leaching of Co ions into aqueous solution. Co-ZSM-5 also presents stable performance in heterogeneous activation of peroxymonosulphate for phenol degradation. The phenol degradation depends on catalyst loading, phenol concentration, oxidant concentration and temperature. Kinetic studies indicate that phenol degradation follows zero-order kinetics with an activated energy of 69.7 kJ/mol.
Keyword Advanced oxidation
Wastewater treatment
Phenol
Co catalyst
Sulphate radical
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
 
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Created: Sat, 16 Aug 2014, 01:41:02 EST by Vicki Thompson on behalf of School of Chemical Engineering