Optimization of pH and TiO2 levels on the mercury removal in a photocatalytic recirculation system with UV-Lamp irradiation
Abstract
Progressive degradation of water resources, generated by humanactivities such as mining and agriculture, represents one of the mainenvironmental issues that humanity faces. The goal of this study wasto evaluate the efficiency of the heterogeneous photocatalysis process,TiO2-catalyzed under artificial UV irradiation, in the mercury removalfrom mining effluents. To optimize photocatalytic process conditions,the response surface methodology was used, effects of pH and TiO2concentration over mercury removal efficiency were evaluated. Themodel found and expressed through a second-order equation explainsin a 77,87% variability of results. The prediction of the model showed amaximum removal efficiency of 98,53% obtained for a pH of 6,98 anda concentration of TiO2 of 0,51 g/L. Langmuir-Hinshelwood pseudosecond order kinetic model was achieved under the optimal conditions.Published
2017-07-26
How to Cite
[1]
J. J. Pinedo Hernández, S. M. Marrugo Madrid, G. H. Enamorado Montes, I. D. Urango Cárdenas, and J. L. Marrugo Negrete, “Optimization of pH and TiO2 levels on the mercury removal in a photocatalytic recirculation system with UV-Lamp irradiation”, Ing. y Des., vol. 35, no. 2, pp. 305–319, Jul. 2017.
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