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 human
activities such as mining and agriculture, represents one of the main
environmental issues that humanity faces. The goal of this study was
to evaluate the efficiency of the heterogeneous photocatalysis process,
TiO2-catalyzed under artificial UV irradiation, in the mercury removal
from mining effluents. To optimize photocatalytic process conditions,
the response surface methodology was used, effects of pH and TiO2
concentration over mercury removal efficiency were evaluated. The
model found and expressed through a second-order equation explains
in a 77,87% variability of results. The prediction of the model showed a
maximum removal efficiency of 98,53% obtained for a pH of 6,98 and
a concentration of TiO2 of 0,51 g/L. Langmuir-Hinshelwood pseudo
second order kinetic model was achieved under the optimal conditions.
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Published
2017-07-26
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Articles
How to Cite
[1]
“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, Accessed: Oct. 22, 2026. Available: https://rcientificas.uninorte.edu.co/ingenieria/article/view/8422




