Oxidation of nitrobenzene by ozone in the presence of faujasite zeolite in a continuous flow gas-liquid-solid reactor

Reungoat, J., Pic, J. S., Manero, M. H. and Debellefontaine, H. (2010) Oxidation of nitrobenzene by ozone in the presence of faujasite zeolite in a continuous flow gas-liquid-solid reactor. Water Science and Technology, 62 5: 1076-1083. doi:10.2166/wst.2010.355


Author Reungoat, J.
Pic, J. S.
Manero, M. H.
Debellefontaine, H.
Title Oxidation of nitrobenzene by ozone in the presence of faujasite zeolite in a continuous flow gas-liquid-solid reactor
Journal name Water Science and Technology   Check publisher's open access policy
ISSN 0273-1223
1996-9732
Publication date 2010
Sub-type Article (original research)
DOI 10.2166/wst.2010.355
Volume 62
Issue 5
Start page 1076
End page 1083
Total pages 8
Place of publication London
Publisher IWA Publishing/Portland Press
Collection year 2011
Language eng
Abstract This work investigates the oxidation of nitrobenzene (NB) by ozone in the presence of faujasite zeolite. Experiments were carried out in a gas-liquid-solid reactor were ozone transfer and NB oxidation took place at the same time. Three configurations of the reactor were compared: empty, filled with inert glass beads and filled with faujasite pellets. First, ozone transfer coefficient (kLa) and decomposition rate constant (kC) were determined for each configuration. In presence of solid, kLa was 2.0 to 2.6 times higher and kC was 5.0 to 6.4 times higher compared to the empty reactor. Then, the various configurations were evaluated in terms of NB removal and chemical oxygen demand (COD) decrease. The faujasite reactor showed higher removal of NB and decrease of COD compared to other configurations under the same conditions suggesting that the faujasite increases the oxidation rate of NB. Oxidation of NB in presence of faujasite also proved to be limited by the transfer of ozone from the gas to the liquid phase. © IWA Publishing 2010.
Keyword Adsorption
Decomposition
Ozonation
Transfer
Wastewater
Zeolite
High-silica Zeolites
Mass-transfer Parameters
Organic pollutants
Water
Decomposition
Adsorption
Regeneration
Ozonation
Phase
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
Advanced Water Management Centre Publications
 
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Created: Sun, 10 Oct 2010, 00:00:05 EST