Título
Data for the synthesis, characterization, and use of xerogels as adsorbents for the removal of fluoride and bromide in aqueous phase
Autor
NAHUM ANDRES MEDELLIN CASTILLO
ELIZABETH DIANE ISAACS PAEZ
Liliana Giraldo Gutiérrez
JUAN CARLOS MORENO-PIRAJAN
ITZIA RODRIGUEZ MENDEZ
SIMON YOBANNY REYES LOPEZ
JAIME REYES HERNANDEZ
SONIA JUDITH SEGOVIA SANDOVAL
Nivel de Acceso
Acceso Abierto
Identificador alterno
doi: https://doi.org/10.1016/j.dib.2022.108138
Materias
Resumen o descripción
"Groundwater with high fluoride concentrations has been recognized as one of the serious concerns worldwide. Besides, the fluoride released into the groundwater by slow dissolution of fluoride-containing rocks, various industries also contribute to fluoride pollution [1]. Excess intake of fluoride leads to various health problems such as dental and skeletal fluorosis, cancer, infertility, brain damage, thyroid diseases, etc. [2]. On the other hand, bromide is naturally present in surface and groundwater sources. However, during the chlorination process, bromide can be oxidized to HOBr, which can react with natural organic matter in water to form brominated organic disinfection byproducts, which are very harmful to human health [3]. Among various methods for water treatment, the adsorption process has been widely used and seems to be an efficient and attractive method for the removal of many contaminants in water, such as anions, in terms of cost, simplicity of design, and operation [4,5]. In the past years, xerogels and carbon xerogels, a new type of adsorbents, which are synthesized by the sol-gel polycondensation of resorcinol and formaldehyde, have gained attention due to their moldable texture and chemical properties [6]. Moreover, melamine addition in resorcinol and formaldehyde xerogels adds basic groups on its surface, favouring Lewis acid-base interactions between xerogels and other components by adsorption [7]. In this data article, the synthesis of three resorcinolformaldehyde (R/F) xerogels with an increasing amount of melamine (M) was carried out by colloidal polymerization (molar ratios of M/R = 0.5, M/R = 1.0, and M/R = 2.0). Additionally, samples of M/R = 0.5 xerogel were carbonized at 400, 450, and 550 degrees C under an inert atmosphere to increase their specific area. Organic and carbon xerogels obtained were characterized by FTIR, TGA, SEM, Physisorption of N 2, and the pH at the point of zero charge (pH PZC). All organic xerogels were also tested as adsorbents on the removal of fluoride and bromide ions from aqueous phase. The Freundlich, Langmuir, and Radke-Prausnitz isotherm models were applied to interpret the experimental data from adsorption equilibrium. Additionally, the data of the mass of the xerogel needed to remove fluoride and bromide from groundwater and fulfill the maximum concentration levels are also included."
Fecha de publicación
2022
Tipo de publicación
Artículo
Versión de la publicación
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application/pdf
Sugerencia de citación
Nahum Andres Medellin-Castillo, Elizabeth Diane Isaacs-Páez, Liliana Giraldo-Gutierrez, Juan Carlos Moreno-Piraján, Itzia Rodríguez-Méndez, Simón Yobanny Reyes-López, Jaime Reyes-Hernández, Sonia Judith Segovia-Sandoval, Data for the synthesis, characterization, and use of xerogels as adsorbents for the removal of fluoride and bromide in aqueous phase, Data in Brief, Volume 42, https://doi.org/10.1016/j.dib.2022.108138.
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