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Title: Fast and complete removal of the 5-fluorouracil drug from water by electro-Fenton oxidation
Author: Ganzenko, Oleksandra
Oturan, Nihal
Sirés Sadornil, Ignacio
Huguenot, David
Hullebusch, Eric D. van
Esposito, Giovanni
Oturan, Mehmet A.
Keywords: Medicaments antineoplàstics
Contaminació de l'aigua
Antineoplastic agents
Water pollution
Issue Date: Mar-2018
Publisher: Springer Verlag
Abstract: Cytostatic drugs are a troublesome class of emerging pollutants in water owing to their potential effects on DNA. Here we studied the removal of 5-fluorouracil from water using the electro-Fenton process. Galvanostatic electrolyses were performed with an undivided laboratory-scale cell equipped with a boron-doped diamond anode and a carbon felt cathode. Results show that the fastest degradation and almost complete mineralization was obtained at a Fe2+ catalyst concentration of 0.2 mM. The absolute rate constant for oxidation of 5-fluorouracil by hydroxyl radicals was 1.52 × 109 M−1 s−1. Oxalic and acetic acids were initially formed as main short-chain aliphatic by-products, then were completely degraded. After 6 h the final solution mainly contained inorganic ions (NH4 +, NO3 − and F−) and less than 10% of residual organic carbon. Hence, electro-Fenton constitutes an interesting alternative to degrade biorefractory drugs.
Note: Versió postprint del document publicat a:
It is part of: Environmental Chemistry Letters, 2018, vol. 16, num. 1, p. 281-286
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ISSN: 1610-3653
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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