Photocatalytic treatment based on Ti[O.sub.2] for a coal mining drainage/Tratamiento fotocatalitico basado en Ti[O.sub.2] para un drenaje de mineria de carbon

The aim of the present work was to evaluate the effectiveness of a heterogeneous photocatalyst based on Ti[O.sub.2] in the treatment of coal mining drainage which contains a variety of heavy metals and high concentration sulfates and sulfides. The photocatalytic behavior of the commercial reference...

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Published inRevista Facultad de Ingeniería no. 107; p. 88
Main Authors Murcia-Mesa, Julie Joseane, Patino-Castillo, Ceidy Geraldine, Rojas-Sarmiento, Hugo Alfonso, Navio-Santos, Antonio, Hidalgo-Lopez, Maria del Carmen, Angel-Botero, Alberto
Format Journal Article
LanguageSpanish
Published Universidad de Antioquia, Facultad de Ingenieria 01.04.2023
Subjects
Analysis
Coal industry
Diffraction
Heavy metals
Mineral industry
Mining industry
Spectrum analysis
Sulfates
Sulfides
X-rays
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Summary:The aim of the present work was to evaluate the effectiveness of a heterogeneous photocatalyst based on Ti[O.sub.2] in the treatment of coal mining drainage which contains a variety of heavy metals and high concentration sulfates and sulfides. The photocatalytic behavior of the commercial reference Sigma Aldrich and the different materials synthesized using the Sol-gel methodology with surface modifications using sulfation and fluorination processes were analyzed. To find a possible correlation between the physicochemical properties of photocatalysts and their behavior, a characterization was carried out using X-Ray Diffraction (XRD), X-Ray Fluorescence spectrometry (XRF), Fourier transform infrared spectroscopy (FT-IR), UV-Vis diffuse reflectance Spectra (UV-Vis DRS), [N.sub.2] physisorption, X-ray photoelectron spectroscopy (XPS), and particle size analysis. Results indicated that the modification of the Ti[O.sub.2] prepared in the laboratory using sulfation and fluorination allowed the successful control of the physicochemical properties of this oxide. However, commercial Ti[O.sub.2] showed the greatest effectiveness in removing metals such as: Fe, Cu, Cr, and As after a photocatalytic reaction for a maximum of 1 hour under continuous nitrogen flow and a light intensity of 120 W/[m.sup.2].
ISSN:0120-6230
2422-2844
DOI:10.17533/udea.redin.20211063