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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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 |
work_keys_str_mv |
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