期刊
CHEMICAL ENGINEERING JOURNAL
卷 385, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2019.123922
关键词
Photocatalytic ozonation; Graphene Oxide-Titania catalysts; Oxalic acid; Water remediation; Kinetics
资金
- Spanish Ministry of Economy and Competitiveness [CTQ2015/64944-R]
- European Funds for Regional Development [CTQ2015/64944-R]
In this work, three catalysts constituted by graphene oxide on titania prepared from different methods for their use in photocatalytic ozonation (PhOz) have been compared through their properties determined from well known characterization techniques (SBET, XRD, Raman, TEM, UVVisDRS, XPS, etc) and efficiency to remove oxalic acid as model end product of ozone processes. Comparison has also been made for transfer ozone demand and R-CT and R-HO(,O3) parameters. By considering the reacting system as one irreversible gas-liquid-solid catalytic reaction, a kinetic study has been developed and activation energies of these reactions calculated for two out of three catalysts. Finally, kinetic modelling was also proposed and solved to calculate TOC and ozone concentrations in the gas leaving the reactor and dissolved in water for the three PhOz processes.
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