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|Title:||Fast and complete removal of the 5-fluorouracil drug from water by electro-Fenton oxidation|
Sirés Sadornil, Ignacio
Hullebusch, Eric D. van
Oturan, Mehmet A.
Contaminació de l'aigua
|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: https://doi.org/10.1007/s10311-017-0659-6|
|It is part of:||Environmental Chemistry Letters, 2018, vol. 16, num. 1, p. 281-286|
|Appears in Collections:||Articles publicats en revistes (Ciència dels Materials i Química Física)|
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