Treatment of Pesticides in Wastewater by Heterogeneous and Homogeneous Photocatalysis
The effect of different heterogeneous and homogeneous photocatalytic systems on the oxidative degradation of mepiquat chloride in aqueous solutions was investigated. In the case of heterogeneous reactions, the influence of five factors was studied: the type of catalyst, photocatalyst concentration,...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2012/194823 |
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| _version_ | 1832564233288548352 |
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| author | Catalina Daniela Stan Igor Cretescu Cristina Pastravanu Ioannis Poulios Maria Drăgan |
| author_facet | Catalina Daniela Stan Igor Cretescu Cristina Pastravanu Ioannis Poulios Maria Drăgan |
| author_sort | Catalina Daniela Stan |
| collection | DOAJ |
| description | The effect of different heterogeneous and homogeneous photocatalytic systems on the oxidative degradation of mepiquat chloride in aqueous solutions was investigated. In the case of heterogeneous reactions, the influence of five factors was studied: the type of catalyst, photocatalyst concentration, pH, pesticide concentration, and the presence of H2O2 and/or Fe3+. For homogeneous catalysis, other factors were studied: the oxidising agent and the light source. Nearly complete degradation of mepiquat chloride was obtained after about 180 minutes in the presence of an acid medium (pH3) using a UV-A lamp and TiO2P-25 catalyst (0.5 g/L), for an initial pesticide concentration of 10 ppm. Degradation rates corresponding to homogeneous photocatalysis were lower compared to those corresponding to the use of TiO2 as the photocatalyst. |
| format | Article |
| id | doaj-art-f7ba8e6376e44822b3cd9a86ce3293d7 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-f7ba8e6376e44822b3cd9a86ce3293d72025-02-03T01:11:30ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/194823194823Treatment of Pesticides in Wastewater by Heterogeneous and Homogeneous PhotocatalysisCatalina Daniela Stan0Igor Cretescu1Cristina Pastravanu2Ioannis Poulios3Maria Drăgan4Department of Drug Industry and Pharmaceutical Biotechnology, Grigore T. Popa University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iasi, RomaniaDepartment of Environmental Engineering and Management, Faculty of Chemical Engineering and Environmental Protection, Gheorghe Asachi Technical University of Iasi, 73 Professor D. Mangeron Street, 700050 Iasi, RomaniaDepartment of Materials Chemistry, “Al. I. Cuza” University of Iasi, 11 Carol I Boulvard, 700506 Iasi, RomaniaDepartment of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceDepartment of Drug Industry and Pharmaceutical Biotechnology, Grigore T. Popa University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iasi, RomaniaThe effect of different heterogeneous and homogeneous photocatalytic systems on the oxidative degradation of mepiquat chloride in aqueous solutions was investigated. In the case of heterogeneous reactions, the influence of five factors was studied: the type of catalyst, photocatalyst concentration, pH, pesticide concentration, and the presence of H2O2 and/or Fe3+. For homogeneous catalysis, other factors were studied: the oxidising agent and the light source. Nearly complete degradation of mepiquat chloride was obtained after about 180 minutes in the presence of an acid medium (pH3) using a UV-A lamp and TiO2P-25 catalyst (0.5 g/L), for an initial pesticide concentration of 10 ppm. Degradation rates corresponding to homogeneous photocatalysis were lower compared to those corresponding to the use of TiO2 as the photocatalyst.http://dx.doi.org/10.1155/2012/194823 |
| spellingShingle | Catalina Daniela Stan Igor Cretescu Cristina Pastravanu Ioannis Poulios Maria Drăgan Treatment of Pesticides in Wastewater by Heterogeneous and Homogeneous Photocatalysis International Journal of Photoenergy |
| title | Treatment of Pesticides in Wastewater by Heterogeneous and Homogeneous Photocatalysis |
| title_full | Treatment of Pesticides in Wastewater by Heterogeneous and Homogeneous Photocatalysis |
| title_fullStr | Treatment of Pesticides in Wastewater by Heterogeneous and Homogeneous Photocatalysis |
| title_full_unstemmed | Treatment of Pesticides in Wastewater by Heterogeneous and Homogeneous Photocatalysis |
| title_short | Treatment of Pesticides in Wastewater by Heterogeneous and Homogeneous Photocatalysis |
| title_sort | treatment of pesticides in wastewater by heterogeneous and homogeneous photocatalysis |
| url | http://dx.doi.org/10.1155/2012/194823 |
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