URI | http://purl.tuc.gr/dl/dias/0298DFFF-93FF-4C4C-AE01-733A916F84D5 | - |
Αναγνωριστικό | http://www.sciencedirect.com/science/article/pii/S0920586112007791 | - |
Αναγνωριστικό | https://doi.org/10.1016/j.cattod.2012.11.004 | - |
Γλώσσα | en | - |
Μέγεθος | 8 pages | en |
Τίτλος | Solar photocatalytic decomposition of estrogens over immobilized zinc oxide | en |
Δημιουργός | Koutantou Virginia | en |
Δημιουργός | Κουταντου Βιργινια | el |
Δημιουργός | Kostadima Maria-Alexandra | en |
Δημιουργός | Κωσταδημα Μαρια-Αλεξανδρα | el |
Δημιουργός | Chatzisymeon Efthalia | en |
Δημιουργός | Χατζησυμεων Ευθαλια | el |
Δημιουργός | Frontistis, Zacharias | en |
Δημιουργός | Binas Vassilios | en |
Δημιουργός | Venieri Danai | en |
Δημιουργός | Βενιερη Δαναη | el |
Δημιουργός | Mantzavinos Dionysis | en |
Δημιουργός | Μαντζαβινος Διονυσης | el |
Εκδότης | Elsevier | en |
Περίληψη | The photocatalytic degradation of synthetic estrogen 17α-ethynylestradiol (EE2) in environmental samples was investigated. Zinc oxide immobilized onto a glass substrate was prepared and used as the photocatalyst, while radiation was provided by a solar simulator. EE2 in the range 50–200 μg/L was treated in various matrices, i.e. ultrapure water, wastewater and drinking water, and treatment efficiency was assessed as a function of photon flux, ZnO loading and addition of hydrogen peroxide. Degradation follows apparent first-order kinetics and increases with increasing photon flux (4.93·10−7–5.8·10−7 einstein/(L s)) and H2O2 concentration (up to 100 mg/L), while ZnO loading (1.2–16.3 mg) has a marginal effect. Reaction in ultrapure water is twice as fast as in wastewater (e.g. the respective apparent rate constants are 17.3·10−3 and 9.4·10−3 min−1 at maximum photon flux and 3.7 mg ZnO) due to the competition for oxidants between EE2 and the wastewater components (organic matter and ions). The catalyst retained most of its activity upon repeated use (i.e. 21 consecutive runs of 31.5 h duration) although it was partially dissolved in the liquid phase; leached zinc can trigger homogeneous reactions, thus contributing to the overall photocatalytic degradation. | en |
Τύπος | Peer-Reviewed Journal Publication | en |
Τύπος | Δημοσίευση σε Περιοδικό με Κριτές | el |
Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
Ημερομηνία | 2015-11-14 | - |
Ημερομηνία Δημοσίευσης | 2013 | - |
Θεματική Κατηγορία | EDCs | en |
Θεματική Κατηγορία | Kinetics | en |
Θεματική Κατηγορία | Reuse | en |
Θεματική Κατηγορία | Stability | en |
Θεματική Κατηγορία | Water matrix | en |
Θεματική Κατηγορία | Zinc | en |
Βιβλιογραφική Αναφορά | V. Koutantou, M. Kostadima, E. Chatzisymeon, Z. Frontistis, V. Binas, D. Venieri and D. Mantzavinos, "Solar photocatalytic decomposition of estrogens over immobilized zinc oxide", Catal. Today, vol. 209, pp. 66-73, Jun. 2013. doi:10.1016/j.cattod.2012.11.004 | en |