Diclofenac removal from water with ozone and activated carbon

Journal of Hazardous Materials
Fernando J BeltránAna Oropesa

Abstract

Diclofenac (DCF) has been treated in water with ozone in the presence of various activated carbons. Activated carbon-free ozonation or single ozonation leads to a complete degradation of DCF in less than 15 min while in the presence of activated carbons higher degradation rates of TOC and DCF are noticeably achieved. Among the activated carbons used, P110 Hydraffin was found the most suitable for the catalytic ozonation of DCF. The influence of pH was also investigated. In the case of the single ozonation the increasing pH slightly increases the TOC removal rate. This effect, however, was not so clear in the presence of activated carbons where the influence of the adsorption process must be considered. Ecotoxicity experiments were performed, pointing out that single ozonation reduces the toxicity of the contaminated water but catalytic ozonation improved those results. As far as kinetics is concerned, DCF is removed with ozone in a fast kinetic regime and activated carbon merely acts as a simple adsorbent. However, for TOC removal the ozonation kinetic regime becomes slow. In the absence of the adsorbent, the apparent rate constant of the mineralization process was determined at different pH values. On the other hand, determina...Continue Reading

References

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Citations

Sep 13, 2013·Chemosphere·José Rivera-UtrillaRaúl Ocampo-Pérez
May 28, 2011·Journal of Hazardous Materials·Yan WangFang Liu
Aug 24, 2016·Journal of Environmental Management·Jianlong Wang, Shizong Wang
Oct 23, 2016·Environment International·Linson LonappanRao Y Surampalli
Nov 1, 2016·Environmental Science and Pollution Research International·Ana Lourdes OropesaFernando Beltrán
Mar 16, 2017·The Science of the Total Environment·Oscar RozasHéctor D Mansilla
May 26, 2017·Environmental Technology·Daniela S GomesRui C Martins
Jun 23, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·N PaxéusHaitham El-Taliawy
Feb 14, 2019·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Jose A Lara-RamosFiderman Machuca-Martínez
Dec 18, 2019·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Mladenka NovakovicIvana Mihajlovic
Nov 5, 2017·Environmental Science and Pollution Research International·Ana Lourdes OropesaPatrícia Palma
May 7, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Manuel A FigueredoFernando J Beltran
May 28, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Daniela GomesLícinio M Gando-Ferreira
Jan 14, 2021·Environmental Science and Pollution Research International·Jose Antonio Lara-RamosFiderman Machuca-Martínez
Jan 12, 2021·Applied Catalysis. B, Environmental·Abdulaziz Al-AnaziDionysios D Dionysiou

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