Solar Photocatalytic Degradation of Bisphenol A on Immobilized ZnO or TiO2
The removal of bisphenol A (BPA) under simulated solar irradiation and in the presence of either TiO2 or ZnO catalysts immobilized onto glass plates was investigated. The effect of various operating conditions on degradation was assessed including the amount of the immobilized catalyst (36.1–150.7 m...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2013/570587 |
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| author | Andreas Zacharakis Efthalia Chatzisymeon Vassilios Binas Zacharias Frontistis Danae Venieri Dionissios Mantzavinos |
| author_facet | Andreas Zacharakis Efthalia Chatzisymeon Vassilios Binas Zacharias Frontistis Danae Venieri Dionissios Mantzavinos |
| author_sort | Andreas Zacharakis |
| collection | DOAJ |
| description | The removal of bisphenol A (BPA) under simulated solar irradiation and in the presence of either TiO2 or ZnO catalysts immobilized onto glass plates was investigated. The effect of various operating conditions on degradation was assessed including the amount of the immobilized catalyst (36.1–150.7 mg/cm2 for TiO2 and 0.5–6.8 mg/cm2 for ZnO), initial BPA concentration (50–200 μg/L), treatment time (up to 90 min), water matrix (wastewater, drinking water, and pure water), the addition of H2O2 (25–100 mg/L), and the presence of other endocrine disruptors in the reaction mixture. Specifically, it was observed that increasing the amount of immobilized catalyst increases BPA conversion and so does the addition of H2O2 up to 100 mg/L. Moreover, BPA degradation follows first-order reaction kinetics indicating that the final removal is not practically affected by the initial BPA concentration. Degradation in wastewater is slower than that in pure water up to five times, implying the scavenging behavior of effluent’s constituents against hydroxyl radicals. Finally, the presence of other endocrine disruptors, such as 17α-ethynylestradiol, spiked in the reaction mixture at low concentrations usually found in environmental samples (i.e., 100 μg/L), neither affects BPA degradation nor alters its kinetics to a considerable extent. |
| format | Article |
| id | doaj-art-8a8c77e9e6154c5a94e9fe48cb8c28b0 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-8a8c77e9e6154c5a94e9fe48cb8c28b02025-02-03T01:23:17ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2013-01-01201310.1155/2013/570587570587Solar Photocatalytic Degradation of Bisphenol A on Immobilized ZnO or TiO2Andreas Zacharakis0Efthalia Chatzisymeon1Vassilios Binas2Zacharias Frontistis3Danae Venieri4Dionissios Mantzavinos5Department of Environmental Engineering, Technical University of Crete, Polytechneioupolis, 73100 Chania, GreeceDepartment of Environmental Engineering, Technical University of Crete, Polytechneioupolis, 73100 Chania, GreeceInstitute of Electronic Structure and Laser (IESL), FORTH, P.O. Box 1527, Vassilika Vouton, 71110 Heraklion, GreeceDepartment of Environmental Engineering, Technical University of Crete, Polytechneioupolis, 73100 Chania, GreeceDepartment of Environmental Engineering, Technical University of Crete, Polytechneioupolis, 73100 Chania, GreeceDepartment of Environmental Engineering, Technical University of Crete, Polytechneioupolis, 73100 Chania, GreeceThe removal of bisphenol A (BPA) under simulated solar irradiation and in the presence of either TiO2 or ZnO catalysts immobilized onto glass plates was investigated. The effect of various operating conditions on degradation was assessed including the amount of the immobilized catalyst (36.1–150.7 mg/cm2 for TiO2 and 0.5–6.8 mg/cm2 for ZnO), initial BPA concentration (50–200 μg/L), treatment time (up to 90 min), water matrix (wastewater, drinking water, and pure water), the addition of H2O2 (25–100 mg/L), and the presence of other endocrine disruptors in the reaction mixture. Specifically, it was observed that increasing the amount of immobilized catalyst increases BPA conversion and so does the addition of H2O2 up to 100 mg/L. Moreover, BPA degradation follows first-order reaction kinetics indicating that the final removal is not practically affected by the initial BPA concentration. Degradation in wastewater is slower than that in pure water up to five times, implying the scavenging behavior of effluent’s constituents against hydroxyl radicals. Finally, the presence of other endocrine disruptors, such as 17α-ethynylestradiol, spiked in the reaction mixture at low concentrations usually found in environmental samples (i.e., 100 μg/L), neither affects BPA degradation nor alters its kinetics to a considerable extent.http://dx.doi.org/10.1155/2013/570587 |
| spellingShingle | Andreas Zacharakis Efthalia Chatzisymeon Vassilios Binas Zacharias Frontistis Danae Venieri Dionissios Mantzavinos Solar Photocatalytic Degradation of Bisphenol A on Immobilized ZnO or TiO2 International Journal of Photoenergy |
| title | Solar Photocatalytic Degradation of Bisphenol A on Immobilized ZnO or TiO2 |
| title_full | Solar Photocatalytic Degradation of Bisphenol A on Immobilized ZnO or TiO2 |
| title_fullStr | Solar Photocatalytic Degradation of Bisphenol A on Immobilized ZnO or TiO2 |
| title_full_unstemmed | Solar Photocatalytic Degradation of Bisphenol A on Immobilized ZnO or TiO2 |
| title_short | Solar Photocatalytic Degradation of Bisphenol A on Immobilized ZnO or TiO2 |
| title_sort | solar photocatalytic degradation of bisphenol a on immobilized zno or tio2 |
| url | http://dx.doi.org/10.1155/2013/570587 |
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