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Ingeniería y competitividad
versão impressa ISSN 0123-3033
Resumo
OCHOA-GUTIERREZ, Karen S. e MUESES, Miguel Angel. Experimental and mathematical evaluation of molecular adsorption models for organic pollutants on TiO2-P25 particles. Ing. compet. [online]. 2014, vol.16, n.2, pp.309-320. ISSN 0123-3033.
In this work we evaluated conventional models based on adsorption isotherms of L2 type for organic compounds: DCA, phenol and 4-chlorophenol over TiO2-P25 particles to different operational conditions. The models studied were Langmuir-Hinshelwood, Redlich-Petersen and Toth because these models can be applied as possible equations to improve the description of the reaction rate mechanism based on hydroxyl radical attack, and the degradation using heterogeneous photocatalysis. Finally the models were compared with experimental data for determination of the more appropriate isotherm. L-H model was the more appropriate and the results were high effective in the prediction of experimental data
Palavras-chave : TiO2-P25 photocatalyst; Organic compounds: DCA 4-Chlorophenol and Phenol; L2 isotherm.