Nano-Catalytic Ozonation of 4-Nitrochlorobenzene in Aqueous Solutions

In this paper, efficiency of nano-ZnO particles on catalytic ozonation of 4-nitrochlorobenzene (4NCB) using semi-batch reactor has been studied at various pHs. During the catalytic ozonation, TOC and concentration of nitrate ions was monitored. Results indicate that degradation of 4NCB was improved...

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Main Authors: S. M. Tabatabaei, A. Mehrizad, P. Gharbani
Format: Article
Language:English
Published: Hindawi Limited 2012-01-01
Series:E-Journal of Chemistry
Online Access:http://dx.doi.org/10.1155/2012/696418
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spelling doaj-2c666481a95d463b86edc109756140532020-11-24T22:41:53ZengHindawi LimitedE-Journal of Chemistry0973-49452090-98102012-01-01941968197510.1155/2012/696418Nano-Catalytic Ozonation of 4-Nitrochlorobenzene in Aqueous SolutionsS. M. Tabatabaei0A. Mehrizad1P. Gharbani2Department of Chemistry, Ahar Branch, Islamic Azad University, Ahar, IranDepartment of Chemistry, Science and Research Branch, Islamic Azad University, Tabriz, IranDepartment of Chemistry, Ahar Branch, Islamic Azad University, Ahar, IranIn this paper, efficiency of nano-ZnO particles on catalytic ozonation of 4-nitrochlorobenzene (4NCB) using semi-batch reactor has been studied at various pHs. During the catalytic ozonation, TOC and concentration of nitrate ions was monitored. Results indicate that degradation of 4NCB was improved by combination of nano-ZnO with ozone. The effect of ZnO particle size and pH are also examined. According to the results, concentration of 4NCB decreased with increasing of particle size from nanosized to microsized and pH from 3.0 to 9.0. Based on the results, it suggests radical hydroxyl does not affect on the degradation of 4NCB in catalytic ozonation, but the surface of catalyst plays main role. Kinetic studies showed degradation of 4NCB followed pseudo-first-order kinetic and maximum degradation rate was observed at pH=3.http://dx.doi.org/10.1155/2012/696418
collection DOAJ
language English
format Article
sources DOAJ
author S. M. Tabatabaei
A. Mehrizad
P. Gharbani
spellingShingle S. M. Tabatabaei
A. Mehrizad
P. Gharbani
Nano-Catalytic Ozonation of 4-Nitrochlorobenzene in Aqueous Solutions
E-Journal of Chemistry
author_facet S. M. Tabatabaei
A. Mehrizad
P. Gharbani
author_sort S. M. Tabatabaei
title Nano-Catalytic Ozonation of 4-Nitrochlorobenzene in Aqueous Solutions
title_short Nano-Catalytic Ozonation of 4-Nitrochlorobenzene in Aqueous Solutions
title_full Nano-Catalytic Ozonation of 4-Nitrochlorobenzene in Aqueous Solutions
title_fullStr Nano-Catalytic Ozonation of 4-Nitrochlorobenzene in Aqueous Solutions
title_full_unstemmed Nano-Catalytic Ozonation of 4-Nitrochlorobenzene in Aqueous Solutions
title_sort nano-catalytic ozonation of 4-nitrochlorobenzene in aqueous solutions
publisher Hindawi Limited
series E-Journal of Chemistry
issn 0973-4945
2090-9810
publishDate 2012-01-01
description In this paper, efficiency of nano-ZnO particles on catalytic ozonation of 4-nitrochlorobenzene (4NCB) using semi-batch reactor has been studied at various pHs. During the catalytic ozonation, TOC and concentration of nitrate ions was monitored. Results indicate that degradation of 4NCB was improved by combination of nano-ZnO with ozone. The effect of ZnO particle size and pH are also examined. According to the results, concentration of 4NCB decreased with increasing of particle size from nanosized to microsized and pH from 3.0 to 9.0. Based on the results, it suggests radical hydroxyl does not affect on the degradation of 4NCB in catalytic ozonation, but the surface of catalyst plays main role. Kinetic studies showed degradation of 4NCB followed pseudo-first-order kinetic and maximum degradation rate was observed at pH=3.
url http://dx.doi.org/10.1155/2012/696418
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AT amehrizad nanocatalyticozonationof4nitrochlorobenzeneinaqueoussolutions
AT pgharbani nanocatalyticozonationof4nitrochlorobenzeneinaqueoussolutions
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