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E. Salinas
Área Académica de Ciencias de la Tierra y Materiales, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca—Tulancingo km. 4.5, C.P. 42184, Mineral de la Reforma, Hidalgo C.P. 42184, México

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Correction
Published: 19 August 2021 in Metals
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The authors wish to make the following corrections to this paper

ACS Style

David Torres; Luís Ayala; Ricardo I. Jeldres; Eduardo Cerecedo-Sáenz; Eleazar Salinas-Rodríguez; Pedro Robles; Norman Toro. Correction: Torres et al. Leaching Chalcopyrite with High MnO2 and Chloride Concentrations. Metals 2020, 10, 107. Metals 2021, 11, 1312 .

AMA Style

David Torres, Luís Ayala, Ricardo I. Jeldres, Eduardo Cerecedo-Sáenz, Eleazar Salinas-Rodríguez, Pedro Robles, Norman Toro. Correction: Torres et al. Leaching Chalcopyrite with High MnO2 and Chloride Concentrations. Metals 2020, 10, 107. Metals. 2021; 11 (8):1312.

Chicago/Turabian Style

David Torres; Luís Ayala; Ricardo I. Jeldres; Eduardo Cerecedo-Sáenz; Eleazar Salinas-Rodríguez; Pedro Robles; Norman Toro. 2021. "Correction: Torres et al. Leaching Chalcopyrite with High MnO2 and Chloride Concentrations. Metals 2020, 10, 107." Metals 11, no. 8: 1312.

Journal article
Published: 07 August 2021 in Minerals
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In this work, scanning electron microscopy (SEM), X-ray diffraction (XRD), and infrared spectroscopy (FTIR) techniques were used to study blue, red, and ochre pigments from wall paintings of the 16th century colonial convent of San Nicolás de Tolentino in Actopan, Hidalgo, Mexico. In the blue pigments, nanometric fibers with a chemical composition of mostly O, Si, Al, and Mg were identified. XRD and FTIR analysis indicated the presence of palygorskite clay, which suggests that these analyzed blue pigments are similar to Mayan blue. In the red pigment, structures with different morphologies (spines and flake shapes, for instance), with a composition of C, O, Al, Si, S, Ca, Na, Mg, and K and a higher concentration of Fe and Pb, were observed. Complementary analysis showed that the red color originates from hematite and lead. Finally, the ochre pigment showed a significant presence of O and Fe, which was associated with the goethite mineral, while calcite was a crystalline phase identified in all analyzed pigments; these show that these pigments are characteristic of the known Mexican Colonial color palette.

ACS Style

Jesús Benjamín Ortega-Lazcano; Demetrio Mendoza-Anaya; Eleazar Salinas-Rodríguez; Juan Hernández-Ávila; Otilio Arturo Acevedo-Sandoval; Ventura Rodríguez-Lugo. Study of Pigments from the Colonial Convent of Actopan, Hidalgo, Mexico. Minerals 2021, 11, 852 .

AMA Style

Jesús Benjamín Ortega-Lazcano, Demetrio Mendoza-Anaya, Eleazar Salinas-Rodríguez, Juan Hernández-Ávila, Otilio Arturo Acevedo-Sandoval, Ventura Rodríguez-Lugo. Study of Pigments from the Colonial Convent of Actopan, Hidalgo, Mexico. Minerals. 2021; 11 (8):852.

Chicago/Turabian Style

Jesús Benjamín Ortega-Lazcano; Demetrio Mendoza-Anaya; Eleazar Salinas-Rodríguez; Juan Hernández-Ávila; Otilio Arturo Acevedo-Sandoval; Ventura Rodríguez-Lugo. 2021. "Study of Pigments from the Colonial Convent of Actopan, Hidalgo, Mexico." Minerals 11, no. 8: 852.

Journal article
Published: 21 June 2021 in Metals
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Lithium has become an element of great relevance in recent times, because among its various applications is the manufacture of batteries, and it is a vital part of the growing development of new products such as electric vehicles. On the other hand, the geographical distribution of lithium reserves is very heterogeneous. Of the existing minerals, only some of them are important sources of exploitation, such as the salt in South America, while in other countries mineral deposits such as spodumene stand out. The process for obtaining lithium from spodumene consists of concentrating up to 3% lithium by flotation. Because other minerals associated with this mineral are mainly silicates (feldspar, clays, quartz and micas), great problems are generated in the thickening stage. This article seeks to study the effect of the addition of flocculants and KCl on the sedimentation rate, in addition to studying its effects on the turbidity of the supernatant in different types of water. This is done by Batch sedimentation tests with tailings pulps, to later characterize both the pulp and the supernatant by means of the turbidity of the clarified water. Magnafloc-338 flocculant is the most convenient to use with industrial water, since it reaches a high sedimentation rate of 34.2, 37.44, and 45.36 m/h, with doses of 5, 10, and 15 g/t respectively, and a low turbidity rate (31 Formazin Nephelometric Units (FNU)) at low flocculant dosages.

ACS Style

Kevin Pérez; Carlos Moraga; Nelson Herrera; Eleazar Salinas-Rodríguez; Edelmira Gálvez. Effect of the Addition of Flocculants and KCl on Sedimentation Rate of Spodumene Tailings. Metals 2021, 11, 986 .

AMA Style

Kevin Pérez, Carlos Moraga, Nelson Herrera, Eleazar Salinas-Rodríguez, Edelmira Gálvez. Effect of the Addition of Flocculants and KCl on Sedimentation Rate of Spodumene Tailings. Metals. 2021; 11 (6):986.

Chicago/Turabian Style

Kevin Pérez; Carlos Moraga; Nelson Herrera; Eleazar Salinas-Rodríguez; Edelmira Gálvez. 2021. "Effect of the Addition of Flocculants and KCl on Sedimentation Rate of Spodumene Tailings." Metals 11, no. 6: 986.

Journal article
Published: 17 March 2021 in Minerals
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Hydroxyapatite (HAp) is a natural hard tissue constituent widely used for bone and tooth replacement engineering. In the present work, synthetic HAp was obtained from calcium nitrate tetrahydrate (Ca(NO3)2·4H2O) and ammonium phosphate dibasic (NH4)2HPO4 following an optimized microwave assisted hydrothermal method. The effect of pH was evaluated by the addition of ammonium hydroxide (NH4OH). Hence, different characterization techniques were used to determine its influence on the resulted HAp powders’ size, shape, and crystallinity. By Transmission Electron Microscopy (TEM), it was observed that the reaction pH environment modifies the morphology of HAp, and a shape evolution, from sub-hedral particles at pH = 7 to rod-like nanosized HAp at pH = 10, was confirmed. Using the X-ray Diffraction (XRD) technique, the characteristic diffraction peaks of the monoclinic phase were identified. Even if the performed Rietveld analysis indicated the presence of both phases (hexagonal and monoclinic), monoclinic HAp prevails in 95% with an average crystallite size of about 23 nm. The infrared spectra (FTIR) showed absorption bands at 3468 cm−1 and 630 cm−1 associated with OH− of hydroxyapatite, and bands at 584 cm−1, 960 cm−1, and 1090 cm−1 that correspond to the PO4 3− and CO3 2− characteristic groups. In summary, this work contributes to obtaining nanosized rod-like monoclinic HAp by a simple and soft method that has not been previously reported.

ACS Style

Daniel Sánchez-Campos; Maria Reyes Valderrama; Susana López-Ortíz; Daniela Salado-Leza; María Fernández-García; Demetrio Mendoza-Anaya; Eleazar Salinas-Rodríguez; Ventura Rodríguez-Lugo. Modulated Monoclinic Hydroxyapatite: The Effect of pH in the Microwave Assisted Method. Minerals 2021, 11, 314 .

AMA Style

Daniel Sánchez-Campos, Maria Reyes Valderrama, Susana López-Ortíz, Daniela Salado-Leza, María Fernández-García, Demetrio Mendoza-Anaya, Eleazar Salinas-Rodríguez, Ventura Rodríguez-Lugo. Modulated Monoclinic Hydroxyapatite: The Effect of pH in the Microwave Assisted Method. Minerals. 2021; 11 (3):314.

Chicago/Turabian Style

Daniel Sánchez-Campos; Maria Reyes Valderrama; Susana López-Ortíz; Daniela Salado-Leza; María Fernández-García; Demetrio Mendoza-Anaya; Eleazar Salinas-Rodríguez; Ventura Rodríguez-Lugo. 2021. "Modulated Monoclinic Hydroxyapatite: The Effect of pH in the Microwave Assisted Method." Minerals 11, no. 3: 314.

Preprint
Published: 11 March 2021
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Usually in the manufacture of beer by fermentation of barley, in both industrialized and developing countries significant amounts of organic solid waste are produced from barley straw. These possibly have an impact on the carbon footprint with an effect on global warming. According to this, it is important to reduce environmental impact of these solid residues, and an adequate way is the recycling using them as raw material for the elaboration of handmade paper. Therefore, it is required to manage this type of waste by analyzing the environmental impact, and thus be able to identify sustainable practices for the treatment of this food waste, evaluating its life cycle, which is a useful methodology to estimate said environmental impacts. It is because of this work shows the main results obtained using the life cycle analysis (LCA) methodology, to evaluate the possible environmental impacts during the waste treatment of a brewery located in the state of Hidalgo, Mexico. The residues evaluated were barley straw, malt residues and spent grain, and at the end, barley straw was selected to determine in detail its environmental impact and its reuse, the sheets analyzed presented a grammage that varies from 66 g/m2 and 143 g/m2, resistance to burst was 117 to 145 kpa, with a crystallinity of 34.4% to 37.1%.

ACS Style

Alma Delia Delia Román Gutiérrez; Juan Hernandez Avila; Antonia Karina Vargas M.; Eduardo Cerecedo Saenz; Eleazar Salinas-Rodríguez. Reuse of Barley Straw for Handmade Paper Production. 2021, 1 .

AMA Style

Alma Delia Delia Román Gutiérrez, Juan Hernandez Avila, Antonia Karina Vargas M., Eduardo Cerecedo Saenz, Eleazar Salinas-Rodríguez. Reuse of Barley Straw for Handmade Paper Production. . 2021; ():1.

Chicago/Turabian Style

Alma Delia Delia Román Gutiérrez; Juan Hernandez Avila; Antonia Karina Vargas M.; Eduardo Cerecedo Saenz; Eleazar Salinas-Rodríguez. 2021. "Reuse of Barley Straw for Handmade Paper Production." , no. : 1.

Journal article
Published: 15 January 2021 in Minerals
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Structural and morphological properties of hydronium-potassium jarosite microstructures were investigated in this work, and their electrical properties were evaluated. All the microstructures were synthesized at a very low temperature of 70 °C with a reduced reaction time of 3 h. An increase in the pH from 0.8 to 2.1 decreased the particle sizes from 3 µm to 200 nm and an increase in the aging time from zero, three, and seven days resulted in semispherical, spherical, and euhedral jarosite structures, respectively. The Rietveld analysis also confirmed that the amount of hydronium substitution by potassium in the cationic site increased with an increase in pH. The percentages of hydronium jarosite (JH)/potassium jarosite (JK) for pH values of 0.8, 1.1, and 2.1 were 77.72/22.29%, 82.44/17.56%, and 89.98/10.02%, respectively. Microstructures obtained in this work were tested as alternative anode materials and the voltage measured using these electrodes made with hydronium-potassium jarosite microstructures and graphite ranged from 0.89 to 1.36 V. The results obtained in this work show that with reduced particle size and euhedral morphology obtained, modified jarosite microstructures can be used as anode materials for improving the lifetime of lithium-ion batteries.

ACS Style

Elías Hernández-Lazcano; E. Cerecedo-Sáenz; J. Hernández-Ávila; Norman Toro; T. V. K. Karthik; D. Mendoza-Anaya; M. E. Fernández-García; V. Rodríguez-Lugo; E. Salinas-Rodríguez. Synthesis of Hydronium-Potassium Jarosites: The Effect of pH and Aging Time on Their Structural, Morphological, and Electrical Properties. Minerals 2021, 11, 80 .

AMA Style

Elías Hernández-Lazcano, E. Cerecedo-Sáenz, J. Hernández-Ávila, Norman Toro, T. V. K. Karthik, D. Mendoza-Anaya, M. E. Fernández-García, V. Rodríguez-Lugo, E. Salinas-Rodríguez. Synthesis of Hydronium-Potassium Jarosites: The Effect of pH and Aging Time on Their Structural, Morphological, and Electrical Properties. Minerals. 2021; 11 (1):80.

Chicago/Turabian Style

Elías Hernández-Lazcano; E. Cerecedo-Sáenz; J. Hernández-Ávila; Norman Toro; T. V. K. Karthik; D. Mendoza-Anaya; M. E. Fernández-García; V. Rodríguez-Lugo; E. Salinas-Rodríguez. 2021. "Synthesis of Hydronium-Potassium Jarosites: The Effect of pH and Aging Time on Their Structural, Morphological, and Electrical Properties." Minerals 11, no. 1: 80.

Book chapter
Published: 07 January 2021 in Trace Metals in the Environment - New Approaches and Recent Advances
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This chapter is related with the preliminary study of some non-metallic minerals to evaluate their cationic exchange capacity, to remove heavy and precious metals, as well as rare earths elements. The minerals and materials used to execute the ion metals removal were bentonite, phosphorite, and diatomite. The chapter shows the physicochemical behavior of all these minerals, which were used to remove the mentioned elements from solutions coming from ore leaching. It was found that in all cases, the removal of heavy and precious metals, as well as rare earths elements reached over 90%. Although, there were minimal differences in efficiency for all minerals used (bentonite, phosphorite, and diatomite), it could be pointed that the phosphorite has the best results going from 99.43% of removal of Gd, to 99.95–100% for the case of Ce, Nd, La, Yb, Eu, Er, Sm, Tb, Ge, Pd, Pt, and Au.

ACS Style

Juan Hernandez-Avila; Edgar Omar Serrano-Mejía; Eleazar Salinas-Rodríguez; Eduardo Cerecedo-Sáenz; María Isabel Reyes-Valderrama; María Del Pilar Gutiérrez-Amador; Ventura Rodriguez Lugo. Use of Porous no Metallic Minerals to Remove Heavy Metals, Precious Metals and Rare Earths, by Cationic Exchange. Trace Metals in the Environment - New Approaches and Recent Advances 2021, 1 .

AMA Style

Juan Hernandez-Avila, Edgar Omar Serrano-Mejía, Eleazar Salinas-Rodríguez, Eduardo Cerecedo-Sáenz, María Isabel Reyes-Valderrama, María Del Pilar Gutiérrez-Amador, Ventura Rodriguez Lugo. Use of Porous no Metallic Minerals to Remove Heavy Metals, Precious Metals and Rare Earths, by Cationic Exchange. Trace Metals in the Environment - New Approaches and Recent Advances. 2021; ():1.

Chicago/Turabian Style

Juan Hernandez-Avila; Edgar Omar Serrano-Mejía; Eleazar Salinas-Rodríguez; Eduardo Cerecedo-Sáenz; María Isabel Reyes-Valderrama; María Del Pilar Gutiérrez-Amador; Ventura Rodriguez Lugo. 2021. "Use of Porous no Metallic Minerals to Remove Heavy Metals, Precious Metals and Rare Earths, by Cationic Exchange." Trace Metals in the Environment - New Approaches and Recent Advances , no. : 1.

Preprint
Published: 16 December 2020
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Structural and morphological properties of the hydronium-potassium jarosite microstructures were investigated in this work, and their electrical properties were evaluated. All microstructures were synthesized at a reasonable temperature of 343 K with a reduced reaction time of 3 hours. Increase in the pH from 0.8 to 2.1 decreased the particle sized from 3 µm to 200 nm and increasing the aging time from 0, 3 to 7 days resulted in semispherical, spherical and euhedreal jarosite structures, respectively. A Rietveld analysis also was done, finding that increasing pH, the amount of hydronium substitution by potassium in the cationic site also increases, having a 77.72 % of hydronium jarosite (JH) plus 22.29 % potassium jarosite (JK) at pH 0.8; 82.44 % (JH) and 17.56 % (JK) at pH 1.1, and 89.98 % (JH) plus 10.02 % (JK) at pH 2.1. The results obtained in this work show that the obtained hydronium potassium jarosite microstructures with reduced particle size and euhedreal morphology can be used as anode materials for improving the life time of lithium ion batteries, due that during the analysis of the voltage obtained using electrodes made with this particles and graphite, this ranged from 0.89 to 1.36 V.

ACS Style

Elías Hernández-Lazcano; E. Cerecedo-Sáenz; J. Hernández-Ávila; Norman Toro; T.V.K. Karthik; D. Mendoza-Anaya; M. E. Fernández-García; V. Rodríguez-Lugo; E. Salinas-Rodríguez. Synthesis of Hydronium-Potassium Jarosite; Effect of pH and Aging Time on their Structural, Morphological and Electrical Properties. 2020, 1 .

AMA Style

Elías Hernández-Lazcano, E. Cerecedo-Sáenz, J. Hernández-Ávila, Norman Toro, T.V.K. Karthik, D. Mendoza-Anaya, M. E. Fernández-García, V. Rodríguez-Lugo, E. Salinas-Rodríguez. Synthesis of Hydronium-Potassium Jarosite; Effect of pH and Aging Time on their Structural, Morphological and Electrical Properties. . 2020; ():1.

Chicago/Turabian Style

Elías Hernández-Lazcano; E. Cerecedo-Sáenz; J. Hernández-Ávila; Norman Toro; T.V.K. Karthik; D. Mendoza-Anaya; M. E. Fernández-García; V. Rodríguez-Lugo; E. Salinas-Rodríguez. 2020. "Synthesis of Hydronium-Potassium Jarosite; Effect of pH and Aging Time on their Structural, Morphological and Electrical Properties." , no. : 1.

Journal article
Published: 12 December 2020 in Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI
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Se realizó un estudio teórico relativo dos perovskita de tipo ABO3, Titanato de Bario (BaTiO3) y Zirconato de Bario (BaZrO3), optimizando los parámetros para un pseudopotencial Perdew-Burke-Erszerhof (PBE) de tipo ultrasuave, mediante el uso del código SIESTA el cual está sustentado en la Teoría del Funcional de la Densidad (DFT). Así mismo se optimizaron las estructuras, alterando el parámetro de red de ambas perovskitas permitiendo determinar la más estable. Para las estructuras de mínima energía del BaTiO3 y BaZrO3 se obtuvieron parámetros de red correspondientes a 4.104 Å y 4.276 Å respectivamente, que difieren en poca cantidad a los reportados experimentalmente cuyos valores son de 4.004 Å y 4.256 Å mostrando que SIESTA permite obtener aproximaciones superiores al 97%, asimismo la estructura de bandas mostro el comportamiento indirecto en la transición de la banda de valencia a la de conducción para ambos materiales con características de semiconductores al poseer valores de 1.64 y 2.77 eV respectivamente.

ACS Style

Leonardo López-Ortega; Brayann Aldair Gutiérrez-García; Miguel Arteaga-Varela; Alejandro De Jesús Herrera-Carbajal; Eleazar Salinas-Rodríguez; Ventura Rodríguez-Lugo. Estudio teórico de las propiedades estructurales y electrónicas en sistemas BaTiO3 y BaZrO3. Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 2020, 8, 54 -59.

AMA Style

Leonardo López-Ortega, Brayann Aldair Gutiérrez-García, Miguel Arteaga-Varela, Alejandro De Jesús Herrera-Carbajal, Eleazar Salinas-Rodríguez, Ventura Rodríguez-Lugo. Estudio teórico de las propiedades estructurales y electrónicas en sistemas BaTiO3 y BaZrO3. Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI. 2020; 8 (Especial):54-59.

Chicago/Turabian Style

Leonardo López-Ortega; Brayann Aldair Gutiérrez-García; Miguel Arteaga-Varela; Alejandro De Jesús Herrera-Carbajal; Eleazar Salinas-Rodríguez; Ventura Rodríguez-Lugo. 2020. "Estudio teórico de las propiedades estructurales y electrónicas en sistemas BaTiO3 y BaZrO3." Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 8, no. Especial: 54-59.

Journal article
Published: 12 December 2020 in Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI
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En el presente estudio se llevo a cabo la cinética de molienda tamaño por tamaño y especie por especie de las escombreras de Dos Carlos de la ciudad de Pachuca, Hidalgo, México; presentando una composición química promedio en % de 70.43 de SiO2, 7.032 de Al2O3, 2.69 de Fe2O3, 0.70 de Mn, 3.98 de K2O, 3.34 de CaO, 2.50 de Na2O, 1.01 de MgO, 0.26 de TiO2, 0.04 de Zn, 0.026 de Pb, 56 g/ton de Ag y 0.6 g/ton de Au; apreciándose como fases mineralógicas mayoritarias: cuarzo, albita, argentita, berlinita, ortoclasa, jarosita de potasio argentífera, jarosita de sodio argentífera, feldespato, Anortoclasa, Calcita. Los resultados experimentales muestran que a medida que el tiempo de molienda se incrementa hasta valores comprendidos entre 32 y 46 minutos, la distribución de los contenidos metálicos es muy similar y se encuentran dados por el rango de 200 a 400 mallas, la máxima velocidad especifica de molienda global (tamaño por tamaño) y por especie correspondiente a la malla 200, para tamaños menores a la malla 200 se genera una disminución en la velocidad especifica por especie (plata), determinandose que el tiempo óptimo de molienda encontrado bajo estas condiciones estudiadas fue de 8 minutos.

ACS Style

Juan Hernández-Ávila; Eduardo Cerecedo-Saenz; Norman Toro; Alberto Arenas-Flores; Ventura Rodríguez-Lugo; Eleazar Salinas-Rodríguez. Cinética de Molienda de las Escombreras del Distrito Pachuca-Real del Monte, Estado de Hidalgo, México. Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 2020, 8, 74 -79.

AMA Style

Juan Hernández-Ávila, Eduardo Cerecedo-Saenz, Norman Toro, Alberto Arenas-Flores, Ventura Rodríguez-Lugo, Eleazar Salinas-Rodríguez. Cinética de Molienda de las Escombreras del Distrito Pachuca-Real del Monte, Estado de Hidalgo, México. Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI. 2020; 8 (Especial):74-79.

Chicago/Turabian Style

Juan Hernández-Ávila; Eduardo Cerecedo-Saenz; Norman Toro; Alberto Arenas-Flores; Ventura Rodríguez-Lugo; Eleazar Salinas-Rodríguez. 2020. "Cinética de Molienda de las Escombreras del Distrito Pachuca-Real del Monte, Estado de Hidalgo, México." Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 8, no. Especial: 74-79.

Research article
Published: 08 December 2020 in Journal of Nanomaterials
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Summary. In the present work, a study of H+ effects on the microstructure and morphology of hydroxyapatite synthesized by the hydrothermal method is reported. The synthesis was realized with pH values of 10, 9.6, 9, 8, and 7. To know the particle size distribution, growth habit, chemical composition, and crystalline phases present, SEM-EDS, XRD, AFM, and FTIR spectroscopy techniques were used and completed with Rietveld analysis. The obtained results showed an important effect of H+ on the morphological and crystallographic characteristics of the hydroxyapatite, demonstrating that the shape and nanoparticle size, as well as the number of crystalline phases, can change depending on the pH during the synthesis. It was observed that there is an increase in the formation of the monoclinic phase and a decrease of the hexagonal phase when the pH value diminishes from 9.6 to 7. The crystallite size also decreases from 46.69 to 19.56 nm. An explanation of the role of pH on the final characteristics of the hydroxyapatite was related to the amount of H+ and OH- ions, and it was included in this work.

ACS Style

S. López-Ortiz; D. Mendoza-Anaya; D. Sánchez-Campos; M. E. Fernandez-García; E. Salinas-Rodríguez; M. I. Reyes-Valderrama; V. Rodríguez-Lugo. The pH Effect on the Growth of Hexagonal and Monoclinic Hydroxyapatite Synthesized by the Hydrothermal Method. Journal of Nanomaterials 2020, 2020, 1 -10.

AMA Style

S. López-Ortiz, D. Mendoza-Anaya, D. Sánchez-Campos, M. E. Fernandez-García, E. Salinas-Rodríguez, M. I. Reyes-Valderrama, V. Rodríguez-Lugo. The pH Effect on the Growth of Hexagonal and Monoclinic Hydroxyapatite Synthesized by the Hydrothermal Method. Journal of Nanomaterials. 2020; 2020 ():1-10.

Chicago/Turabian Style

S. López-Ortiz; D. Mendoza-Anaya; D. Sánchez-Campos; M. E. Fernandez-García; E. Salinas-Rodríguez; M. I. Reyes-Valderrama; V. Rodríguez-Lugo. 2020. "The pH Effect on the Growth of Hexagonal and Monoclinic Hydroxyapatite Synthesized by the Hydrothermal Method." Journal of Nanomaterials 2020, no. : 1-10.

Journal article
Published: 19 November 2020 in Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI
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En el presente trabajo se llevó a cabo la caracterización microestructural de mármol procedente de una cantera localizada en el Municipio de Tepexi Rodriguez en el Estado de Puebla. Los resultados por difracción de rayos X y por espectroscopia en el infrarrojo (FTIR), permitieron confirmar la presencia mayoritaria de la fase calcita, sin embargo, por la presencia de elementos químico minoritarios como Si, Al y Mg, detectados por espectroscopia de dispersión de rayos X, es posible asegurar la presencia de otras fases cristalinas en concentraciones inferiores al 1 %, que no fueron detectadas a consecuencia de límite de detección de los equipos utilizados. Por Microscopia electrónica de barrido, fue posible observar cambios significativos en el tamaño de partícula en cada una de las muestras obtenidas de cada estrato estudiado, lo que permite predecir cambios en la resistencia a los esfuerzos mecánicos.

ACS Style

Efrain Rubio-Rosas; Lesly Sabina Villaseñor-Cerón; Eleazar Salinas-Rodríguez; Juan Hernández-Ávila; Otilio Arturo Acevedo-Sandoval; Ventura Rodríguez-Lugo. Caracterización microestructural de mármol de una cantera localizada en el Municipio de Tepexi de Rodríguez, Estado de Puebla. Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 2020, 8, 68 -73.

AMA Style

Efrain Rubio-Rosas, Lesly Sabina Villaseñor-Cerón, Eleazar Salinas-Rodríguez, Juan Hernández-Ávila, Otilio Arturo Acevedo-Sandoval, Ventura Rodríguez-Lugo. Caracterización microestructural de mármol de una cantera localizada en el Municipio de Tepexi de Rodríguez, Estado de Puebla. Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI. 2020; 8 (Especial):68-73.

Chicago/Turabian Style

Efrain Rubio-Rosas; Lesly Sabina Villaseñor-Cerón; Eleazar Salinas-Rodríguez; Juan Hernández-Ávila; Otilio Arturo Acevedo-Sandoval; Ventura Rodríguez-Lugo. 2020. "Caracterización microestructural de mármol de una cantera localizada en el Municipio de Tepexi de Rodríguez, Estado de Puebla." Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 8, no. Especial: 68-73.

Journal article
Published: 04 April 2020 in Metals
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Covellite is a secondary copper sulfide, and it is not abundant. There are few investigations on this mineral in spite of it being formed during the leaching of chalcocite or digenite; the other investigations on covellite are with the use of mineraloids, copper concentrates, and synthetic covellite. The present investigation applied the surface optimization methodology using a central composite face design to evaluate the effect of leaching time, chloride concentration, and sulfuric acid concentration on the level of copper extraction from covellite (84.3% of purity). Copper is dissolved from a sample of pure covellite without the application of temperature or pressure; the importance of its purity is that the behavior of the parameters is analyzed, isolating the impurities that affect leaching. The chloride came from NaCl, and it was effectuated in a size range from –150 to +106 μm. An ANOVA indicated that the leaching time and chloride concentration have the most significant influence, while the copper extraction was independent of sulfuric acid concentration. The experimental data were described by a highly representative quadratic model obtained by linear regression (R2 = 0.99).

ACS Style

Kevin Pérez; Norman Toro; Manuel Saldaña; Eleazar Salinas-Rodríguez; Pedro Robles; David Torres; Ricardo I. Jeldres. Statistical Study for Leaching of Covellite in a Chloride Media. Metals 2020, 10, 477 .

AMA Style

Kevin Pérez, Norman Toro, Manuel Saldaña, Eleazar Salinas-Rodríguez, Pedro Robles, David Torres, Ricardo I. Jeldres. Statistical Study for Leaching of Covellite in a Chloride Media. Metals. 2020; 10 (4):477.

Chicago/Turabian Style

Kevin Pérez; Norman Toro; Manuel Saldaña; Eleazar Salinas-Rodríguez; Pedro Robles; David Torres; Ricardo I. Jeldres. 2020. "Statistical Study for Leaching of Covellite in a Chloride Media." Metals 10, no. 4: 477.

Journal article
Published: 17 March 2020 in Metals
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Studying the dissolution of chalcocite allows to understand the behavior of the most abundant secondary sulfide ore in copper deposits, while digenite (Cu1.8S) and other intermediate sulfides (Cu2−xS) are often associated with chalcocite. The most common mechanism of dissolution is by two stages, and chloride ions benefit the kinetics of dissolution. In this study, a pure chalcocite mineral (99.9% according to XRD (X-Ray Diffraction) analysis) is leached in chloride media using NaCl and wastewater as the sources of chloride. Magnetic leaching tests are performed at 65, 75, and 95 °C, using a particle size between −150 and + 106 μm. Chloride concentration and leaching time are the main variables. A substantial dissolution of chalcocite was obtained with 0.5 M H2SO4, 100 g/L of chloride and a leaching time of 3 h. The apparent activation energy (Ea) derived from the slopes of the Arrhenius plots was 36 kJ/mol. The XRD analysis proves the presence of elemental sulfur (S0) as the main component in the leaching residue. No significant differences in copper extraction were detected when using 100 g/L of chloride ion or wastewater (39 g/L).

ACS Style

Kevin Pérez; Ricardo I. Jeldres; Steven Nieto; Eleazar Salinas-Rodríguez; Pedro Robles; Víctor Quezada; Juan Hernández Avila; Norman Toro. Leaching of Pure Chalcocite in a Chloride Media Using Waste Water at High Temperature. Metals 2020, 10, 384 .

AMA Style

Kevin Pérez, Ricardo I. Jeldres, Steven Nieto, Eleazar Salinas-Rodríguez, Pedro Robles, Víctor Quezada, Juan Hernández Avila, Norman Toro. Leaching of Pure Chalcocite in a Chloride Media Using Waste Water at High Temperature. Metals. 2020; 10 (3):384.

Chicago/Turabian Style

Kevin Pérez; Ricardo I. Jeldres; Steven Nieto; Eleazar Salinas-Rodríguez; Pedro Robles; Víctor Quezada; Juan Hernández Avila; Norman Toro. 2020. "Leaching of Pure Chalcocite in a Chloride Media Using Waste Water at High Temperature." Metals 10, no. 3: 384.

Journal article
Published: 21 January 2020 in Metals
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Some sedimentary minerals have attractive contents of gold and silver, like a sedimentary exhalative ore available in the eastern of Hidalgo in Mexico. The gold and silver contained represent an interesting opportunity for processing by non-toxic and aggressive leaching reagents like thiosulfate. The preliminary kinetic study indicated that the leaching process was poorly affected by temperature and thiosulfate concentration. The reaction order was −0.61 for Ag, considering a thiosulfate concentration between 200–500 mol·m−3, while, for Au, it was −0.09 for a concentration range between 32–320 mol·m–3. By varying the pH 7–10, it was found that the reaction order was n = 5.03 for Ag, while, for Au, the value was n = 0.94, considering pH 9.5–11. The activation energy obtained during the silver leaching process was 3.15 kJ·mol−1 (298–328 K), which was indicative of a diffusive control of the process. On the other hand, during gold leaching, the activation energy obtained was of 36.44 kJ·mol−1, which was indicative that this process was mixed controlled process, first at low temperatures by diffusive control (298–313 K) and then by chemical control (318–323 K).

ACS Style

Edmundo Roldán-Contreras; Eleazar Salinas-Rodríguez; Juan Hernández-Ávila; Eduardo Cerecedo-Sáenz; Ventura Rodríguez-Lugo; Ricardo I. Jeldres; Norman Toro; Salinas- Rodríguez. Leaching of Silver and Gold Contained in a Sedimentary Ore, Using Sodium Thiosulfate; A Preliminary Kinetic Study. Metals 2020, 10, 159 .

AMA Style

Edmundo Roldán-Contreras, Eleazar Salinas-Rodríguez, Juan Hernández-Ávila, Eduardo Cerecedo-Sáenz, Ventura Rodríguez-Lugo, Ricardo I. Jeldres, Norman Toro, Salinas- Rodríguez. Leaching of Silver and Gold Contained in a Sedimentary Ore, Using Sodium Thiosulfate; A Preliminary Kinetic Study. Metals. 2020; 10 (2):159.

Chicago/Turabian Style

Edmundo Roldán-Contreras; Eleazar Salinas-Rodríguez; Juan Hernández-Ávila; Eduardo Cerecedo-Sáenz; Ventura Rodríguez-Lugo; Ricardo I. Jeldres; Norman Toro; Salinas- Rodríguez. 2020. "Leaching of Silver and Gold Contained in a Sedimentary Ore, Using Sodium Thiosulfate; A Preliminary Kinetic Study." Metals 10, no. 2: 159.

Journal article
Published: 15 January 2020 in Metals
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Oxidized black copper ores are known for their difficulty in dissolving their components of interest through conventional methods. This is due to its non-crystalline and amorphous structure. Among these minerals, copper pitch and copper wad are of great interest because of their considerable concentrations of copper and manganese. Currently, these minerals are not incorporated into the extraction circuits or left untreated, whether in stock, leach pads, or waste. For the recovery of its main elements of interest (Cu and Mn), it is necessary to use reducing agents that dissolve the present MnO2, while allowing the recovery of Cu. In this research, the results for the dissolution of Mn and Cu from a black copper mineral are exposed, evaluating the reducing effect of NaCl for MnO2 through pre-treatment of agglomerate and curing, and subsequently leaching in standard condition with the use of a reducing agent (Fe2+). High concentrations of chloride in the agglomerate process and prolonged curing times would favor the reduction of MnO2, increasing the dissolution of Mn, while the addition of NaCl did not benefit Cu extractions. Under standard conditions, low Mn extractions were obtained, while in an acid-reducing medium, a significant dissolution of MnO2 was achieved, which supports the removal of Cu.

ACS Style

David Torres; Kevin Pérez; Emilio Trigueros; Ricardo I. Jeldres; Eleazar Salinas-Rodríguez; Pedro Robles; Norman Toro. Reducing-Effect of Chloride for the Dissolution of Black Copper. Metals 2020, 10, 123 .

AMA Style

David Torres, Kevin Pérez, Emilio Trigueros, Ricardo I. Jeldres, Eleazar Salinas-Rodríguez, Pedro Robles, Norman Toro. Reducing-Effect of Chloride for the Dissolution of Black Copper. Metals. 2020; 10 (1):123.

Chicago/Turabian Style

David Torres; Kevin Pérez; Emilio Trigueros; Ricardo I. Jeldres; Eleazar Salinas-Rodríguez; Pedro Robles; Norman Toro. 2020. "Reducing-Effect of Chloride for the Dissolution of Black Copper." Metals 10, no. 1: 123.

Journal article
Published: 09 January 2020 in Metals
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Most copper minerals are found as sulfides, with chalcopyrite being the most abundant. However; this ore is refractory to conventional hydrometallurgical methods, so it has been historically exploited through froth flotation, followed by smelting operations. This implies that the processing involves polluting activities, either by the formation of tailings dams and the emission of large amounts of SO2 into the atmosphere. Given the increasing environmental restrictions, it is necessary to consider new processing strategies, which are compatible with the environment, and, if feasible, combine the reuse of industrial waste. In the present research, the dissolution of pure chalcopyrite was studied considering the use of MnO2 and wastewater with a high chloride content. Fine particles (−20 µm) generated an increase in extraction of copper from the mineral. Besides, it was discovered that working at high temperatures (80 °C); the large concentrations of MnO2 become irrelevant. The biggest copper extractions of this work (71%) were achieved when operating at 80 °C; particle size of −47 + 38 µm, MnO2/CuFeS2 ratio of 5/1, and 1 mol/L of H2SO4.

ACS Style

David Torres; Luís Ayala; Ricardo I. Jeldres; Eduardo Cerecedo-Sáenz; Eleazar Salinas-Rodríguez; Pedro Robles; Norman Toro. Leaching Chalcopyrite with High MnO2 and Chloride Concentrations. Metals 2020, 10, 107 .

AMA Style

David Torres, Luís Ayala, Ricardo I. Jeldres, Eduardo Cerecedo-Sáenz, Eleazar Salinas-Rodríguez, Pedro Robles, Norman Toro. Leaching Chalcopyrite with High MnO2 and Chloride Concentrations. Metals. 2020; 10 (1):107.

Chicago/Turabian Style

David Torres; Luís Ayala; Ricardo I. Jeldres; Eduardo Cerecedo-Sáenz; Eleazar Salinas-Rodríguez; Pedro Robles; Norman Toro. 2020. "Leaching Chalcopyrite with High MnO2 and Chloride Concentrations." Metals 10, no. 1: 107.

Journal article
Published: 02 January 2020 in Metals
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The generation of mining waste commonly led to the use of spaces for its disposal. Challenges like mitigating the damage to surrounding communities have promoted the need to reuse, recycle and/or reduce their generation. Besides, these residues may become a source of materials, which are capable of being recovered and reused in several industries, minimizing the environmental impact. In the mining region of Pachuca, Mexico, waste from the mining industry have been generated for more than 100 years, which have a high SiO2 content that can be recovered for various industrial applications. This work aims to recover silica from a material of the Dos Carlos dam. A columnar system composed of two-stage of cleaning was used, considering a JLT (surface liquid rate) value of 0.45 and 0.68 cm/s, respectively; while the Jg (surface gas rate) value was 0.30 cm/s for both stages. Similar bubble sizes in the range of Jg 0.10 to 0.30 cm/s, with values between 0.14 and 0.16 cm in the first stage, and 0.05 to 0.06 cm in the second one. This provided a recovery of 75.10% for all the allotropic phases of silica (quartz, trydimite, and cristobalite) leaving a concentration of 24.90% of a feldspathic phase (orthoclase), as flotation tails.

ACS Style

Eleazar Salinas-Rodriguez; Javier Flores-Badillo; Juan Hernandez-Avila; Eduardo Cerecedo-Saenz; Ma. Del Pilar Gutierrez-Amador; Ricardo I. Jeldres; Normam Toro. Assessment of Silica Recovery from Metallurgical Mining Waste, by Means of Column Flotation. Metals 2020, 10, 72 .

AMA Style

Eleazar Salinas-Rodriguez, Javier Flores-Badillo, Juan Hernandez-Avila, Eduardo Cerecedo-Saenz, Ma. Del Pilar Gutierrez-Amador, Ricardo I. Jeldres, Normam Toro. Assessment of Silica Recovery from Metallurgical Mining Waste, by Means of Column Flotation. Metals. 2020; 10 (1):72.

Chicago/Turabian Style

Eleazar Salinas-Rodriguez; Javier Flores-Badillo; Juan Hernandez-Avila; Eduardo Cerecedo-Saenz; Ma. Del Pilar Gutierrez-Amador; Ricardo I. Jeldres; Normam Toro. 2020. "Assessment of Silica Recovery from Metallurgical Mining Waste, by Means of Column Flotation." Metals 10, no. 1: 72.

Journal article
Published: 13 December 2019 in Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI
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En el presente trabajo se realizó la síntesis de puntos cuánticos a partir de Trigo (Triticum) por el método hidrotermal, optimizando las condiciones de síntesis para el control de la emisión y composición de la superficie para su potencial aplicación como biomarcador. Los puntos cuánticos de carbono obtenidos, fueron caracterizados mediante las técnicas de espectroscopia de luminiscencia, obteniendo una excitación máxima a los 371 nm y una emisión máxima en los 442 nm emitiendo un color azul-cian dentro del rango visible que fue comprobado por el sistema de coordenadas cromáticas, por espectroscopia UV-Vis se presentan transiciones electrónicas π-π* y n-π*, así como el cálculo de Egap con valores de 1.61 y 2.13 eV. Finalmente, la espectroscopia FT-IR, nos muestra grupos funcionales como OH-, C-H, C-N, C=C, C-O, C-OH, C-O-C, COOH, C=C, lo que permite la formación de puntos cuánticos funcionalizados para la fabricación de biomarcadores.

ACS Style

Carlos Alfredo Zamora Valencia; María Isabel Reyes Valderrama; Alejandro De Jesús Herrera Carbajal; Eleazar Salinas Rodríguez; Ventura Rodriguez Lugo. Evaluación de la lumiscencia de puntos cuánticos de carbono sintetizados mediante el método hidrotermal a partir de triticum. Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 2019, 7, 19 -22.

AMA Style

Carlos Alfredo Zamora Valencia, María Isabel Reyes Valderrama, Alejandro De Jesús Herrera Carbajal, Eleazar Salinas Rodríguez, Ventura Rodriguez Lugo. Evaluación de la lumiscencia de puntos cuánticos de carbono sintetizados mediante el método hidrotermal a partir de triticum. Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI. 2019; 7 (Especial-2):19-22.

Chicago/Turabian Style

Carlos Alfredo Zamora Valencia; María Isabel Reyes Valderrama; Alejandro De Jesús Herrera Carbajal; Eleazar Salinas Rodríguez; Ventura Rodriguez Lugo. 2019. "Evaluación de la lumiscencia de puntos cuánticos de carbono sintetizados mediante el método hidrotermal a partir de triticum." Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 7, no. Especial-2: 19-22.

Journal article
Published: 13 December 2019 in Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI
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En este trabajo se presenta el diagnóstico de protección catódica en un cruce aéreo que se encuentra en contacto eléctrico con un derecho de vía de 5 ductos, el cual mantiene una trayectoria perpendicular al derecho de vía. El desarrollo de este trabajo se considera un análisis del nivel de corrosión en el ducto principal, el cual se encuentra soportado sobre mochetas y travesaños, durante la inspección de protección catódica, se monitoreo el potencial eléctrico a lo largo del cruce aéreo y en puntos estratégicos de los ductos cruzados, con el fin de identificar los sitios donde se encuentra el vínculo eléctrico. Por otra parte, se midió el potencial ON en los postes, que se localizan en el punto más cercano al derecho de vía; las mediciones de potencial muestran que los ductos del DDV, se mantienen por arriba de los -850 milivoltios pertenecientes a los ductos B-1, B-2, B-3, B4 y B5. Sin embargo, en las mochetas de los puntos P10, P-7 y P-1, se refleja un ciclo de corte ON-OFF proveniente de los sistemas de protección catódica cercanos. Por otra parte el monitoreo catódico en el ducto A y ducto B, permiten identificar que en los puntos P-6 y P-10 los potenciales del ducto A y los ductos B-2, B-3 respectivamente, los cuales presentan potenciales equiparables con un ciclo ON- OFF, lo cual indica un contacto eléctrico y con protección catódica que cumple el criterio de los -0.85 volts de la NRF-047-PEMEX-2007, así mismo las mochetas en los puntos P-1, P-2 y P-3 se mantienen contacto eléctrico con el ducto A, ocasionado por el deterioro del neopreno, ocasionando una falta de aislamiento

ACS Style

Miguel Lobato Castañeda; Daniel Sánchez Campos; C Ramos Lopez; Eleazar Salinas Rodríguez; María Isabel Reyes Valderrama; Ventura Rodriguez Lugo. Estudio de la Protección Catódica en un Cruce Aéreo. Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 2019, 7, 26 -29.

AMA Style

Miguel Lobato Castañeda, Daniel Sánchez Campos, C Ramos Lopez, Eleazar Salinas Rodríguez, María Isabel Reyes Valderrama, Ventura Rodriguez Lugo. Estudio de la Protección Catódica en un Cruce Aéreo. Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI. 2019; 7 (Especial-2):26-29.

Chicago/Turabian Style

Miguel Lobato Castañeda; Daniel Sánchez Campos; C Ramos Lopez; Eleazar Salinas Rodríguez; María Isabel Reyes Valderrama; Ventura Rodriguez Lugo. 2019. "Estudio de la Protección Catódica en un Cruce Aéreo." Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 7, no. Especial-2: 26-29.