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Dr. Raul Carrillo-Pedroza
Facultad de Metalurgia Universidad Autonoma de Coahuila

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0 Extractive Metallurgy
0 Hydrometallurgy
0 Mineral Processing
0 Water & Wastewater Design
0 Waste reuse

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Journal article
Published: 18 May 2021 in Metals
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The low grade of copper deposits and the use of the froth flotation process have caused excessive tailing production. In recent years, experts have looked for new alternative methods to improve this situation. Black copper minerals are abundant resources not exploited by large-scale copper mining and possess high Mn concentrations. On the other hand, manganese nodules are submarine resources and show high concentrations of Cu, Ni, Fe, and, mainly, Mn. However, both mineral resources are refractory to conventional leaching processes, and so a reducing agent is necessary for their treatment. We studied the use of tailings obtained from the flotation of foundry slags with a high content of Fe3O4 as reducing agents at different MnO2/tailings ratios and H2SO4 concentrations. Mn dissolution was compared in marine nodule and black copper minerals samples. It was found that higher Mn dissolutions are obtained from marine nodules, likely due to the acid consumption created by Cu dissolution from black copper minerals. The remnant elements in manganese nodules were leached under an oxidant condition.

ACS Style

Carlos Moraga; Eduardo Cerecedo-Saenz; Javier González; Pedro Robles; Francisco Carrillo-Pedroza; Norman Toro. Comparative Study of MnO2 Dissolution from Black Copper Minerals and Manganese Nodules in an Acid Medium. Metals 2021, 11, 817 .

AMA Style

Carlos Moraga, Eduardo Cerecedo-Saenz, Javier González, Pedro Robles, Francisco Carrillo-Pedroza, Norman Toro. Comparative Study of MnO2 Dissolution from Black Copper Minerals and Manganese Nodules in an Acid Medium. Metals. 2021; 11 (5):817.

Chicago/Turabian Style

Carlos Moraga; Eduardo Cerecedo-Saenz; Javier González; Pedro Robles; Francisco Carrillo-Pedroza; Norman Toro. 2021. "Comparative Study of MnO2 Dissolution from Black Copper Minerals and Manganese Nodules in an Acid Medium." Metals 11, no. 5: 817.

Journal article
Published: 17 February 2021 in Arabian Journal of Chemistry
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Slags, sludges, and dust from steelmaking industries have been probed as adsorbents for Pb(II) removal from synthetic water solutions, and these residues have showed good potential in the treatment of industrial effluents contaminated with this heavy metal. Adsorption and precipitation of Pb(II) have been postulated as the main mechanisms to remove Pb(II) from aqueous solutions by using steelmaking residues. The significant effect of pH on Pb(II) removal has been well studied but few studies explicitly address the effect of chemical and mineralogical composition of steelmaking residues and a better understanding of this key parameter is still needed for full elucidation and optimization of the Pb(II) removal process. In this study, samples obtained from different sections of a dust collector system (BFD) in a steelmaking factory, were used to evaluate the effect of BFD sample’s chemical composition on the removal of Pb(II) from synthetic aqueous solution. BFD samples were characterized to determine their chemical composition, particle size distribution and isoionic point. Equilibrium and transient experiments of Pb(II) removal from aqueous solutions were conducted a 25 °C and initial pH = 5.0. Results showed that CaO and MgO, as well as metallic Fe and FeO had a positive linear effect BDF samples Pb(II) adsorption capacity. Pb(II) removal process may take place by ion exchange with CaO and MgO, and by precipitation on the surface of metallic Fe and FeO. MgO and FeO promoted the Pb(II) removal in lesser extend that CaO and metallic Fe, respectively, because the surface ion exchange with MgO and FeO are less thermodynamic favourable and their lower composition in the sample. Bimolecular ion exchange process between Pb(II) ions and Ca and Fe species was supported by results from equilibrium and transient adsorption studies. Results of this work clearly showed that removal of Pb(II) from aqueous solutions is a strong function of the chemical composition of BFD samples and it provided further insight to promote the valorisation and optimization of steelmaking residues as heavy-metal adsorbents.

ACS Style

Ma. De Jesús Soria-Aguilar; Antonia Martínez-Luévanos; Marco Antonio Sánchez-Castillo; Francisco Raul Carrillo-Pedroza; Norman Toro; Victor Manuel Narváez-García. Removal of Pb(II) from aqueous solutions by using steelmaking industry wastes: Effect of blast furnace dust’s chemical composition. Arabian Journal of Chemistry 2021, 14, 103061 .

AMA Style

Ma. De Jesús Soria-Aguilar, Antonia Martínez-Luévanos, Marco Antonio Sánchez-Castillo, Francisco Raul Carrillo-Pedroza, Norman Toro, Victor Manuel Narváez-García. Removal of Pb(II) from aqueous solutions by using steelmaking industry wastes: Effect of blast furnace dust’s chemical composition. Arabian Journal of Chemistry. 2021; 14 (4):103061.

Chicago/Turabian Style

Ma. De Jesús Soria-Aguilar; Antonia Martínez-Luévanos; Marco Antonio Sánchez-Castillo; Francisco Raul Carrillo-Pedroza; Norman Toro; Victor Manuel Narváez-García. 2021. "Removal of Pb(II) from aqueous solutions by using steelmaking industry wastes: Effect of blast furnace dust’s chemical composition." Arabian Journal of Chemistry 14, no. 4: 103061.

Journal article
Published: 17 April 2020 in Minerals
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The present work reports the direct leaching of zinc from a sphalerite concentrate in acid media. Lab-scale and pilot-scale experiments were conducted in atmospheric-pressure and low-pressure reactors, respectively. Leaching of zinc and precipitation of iron was achieved in the same stage using different reagents like Fe3+, O2, O3, and Fe2+ (which is continuously oxidized in the leaching solution by H2O2 and O2). The highest percentage of zinc extraction (96%) was obtained in pilot-scale experiments using H2SO4, Fe2+, and O2. Experimental results were compared with those of other researchers to provide a better understanding of the factors influencing the dissolution of zinc. In the first instance, it was determined from analysis of variance that leaching time and the use of an oxidant agent (O2 or O3) were the most influential factors during the direct leaching of zinc from the sphalerite concentrate. Kinetic models were also evaluated to determine the rate-limiting step of the sphalerite leaching; it was concluded that the type of the sulfur layer formed in the residue (porous or non-porous) depends on the type of the oxidant used in the leaching media, which determines the dissolution kinetics of zinc.

ACS Style

Nallely G. Picazo-Rodríguez; Ma. De Jesus Soria-Aguilar; Antonia Martínez-Luévanos; Isaias Almaguer-Guzmán; Josue Chaidez-Félix; Francisco Raul Carrillo-Pedroza. Direct Acid Leaching of Sphalerite: An Approach Comparative and Kinetics Analysis. Minerals 2020, 10, 359 .

AMA Style

Nallely G. Picazo-Rodríguez, Ma. De Jesus Soria-Aguilar, Antonia Martínez-Luévanos, Isaias Almaguer-Guzmán, Josue Chaidez-Félix, Francisco Raul Carrillo-Pedroza. Direct Acid Leaching of Sphalerite: An Approach Comparative and Kinetics Analysis. Minerals. 2020; 10 (4):359.

Chicago/Turabian Style

Nallely G. Picazo-Rodríguez; Ma. De Jesus Soria-Aguilar; Antonia Martínez-Luévanos; Isaias Almaguer-Guzmán; Josue Chaidez-Félix; Francisco Raul Carrillo-Pedroza. 2020. "Direct Acid Leaching of Sphalerite: An Approach Comparative and Kinetics Analysis." Minerals 10, no. 4: 359.

Journal article
Published: 27 January 2020 in Metals
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The unique properties of ionic liquids (ILs) drive the growing number of novel applications in different industries. The main features of ILs are high thermal stability, recyclability, low flash point, and low vapor pressure. This study investigated pure chalcopyrite dissolution in the presence of the ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate, [BMIm]HSO4, and a bromide-like complexing agent. The proposed system was compared with acid leaching in sulfate media with the addition of chloride and bromide ions. The results demonstrated that the use of ionic liquid and bromide ions improved the chalcopyrite leaching performance. The best operational conditions were at a temperature of 90 °C, with an ionic liquid concentration of 20% and 100 g/L of bromide.

ACS Style

Marcelo Rodríguez; Luís Ayala; Pedro Robles; Rossana Sepúlveda; David Torres; Francisco Raul Carrillo-Pedroza; Ricardo I. Jeldres; Norman Toro. Leaching Chalcopyrite with an Imidazolium-Based Ionic Liquid and Bromide. Metals 2020, 10, 183 .

AMA Style

Marcelo Rodríguez, Luís Ayala, Pedro Robles, Rossana Sepúlveda, David Torres, Francisco Raul Carrillo-Pedroza, Ricardo I. Jeldres, Norman Toro. Leaching Chalcopyrite with an Imidazolium-Based Ionic Liquid and Bromide. Metals. 2020; 10 (2):183.

Chicago/Turabian Style

Marcelo Rodríguez; Luís Ayala; Pedro Robles; Rossana Sepúlveda; David Torres; Francisco Raul Carrillo-Pedroza; Ricardo I. Jeldres; Norman Toro. 2020. "Leaching Chalcopyrite with an Imidazolium-Based Ionic Liquid and Bromide." Metals 10, no. 2: 183.

Journal article
Published: 18 September 2019 in Metals
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The sludge from a wet-off gas cleaning system of the iron blast furnace (BF) contains significant amounts of iron; however, they cannot be recycled due to their high content of zinc and alkalis. These compounds are detrimental to the optimal performance of iron and steelmaking furnaces. In this work, a comparative laboratory study to reduce zinc and alkali contained in the blast furnace sludge (BFS) is presented. The effect of leaching parameters such as oxidant (i.e., ferric ion, oxygen or ozone), aqueous solution media (i.e., 0.2 M NH4Cl, 0.2 M HCl and 0.1 M H2SO4) and temperature (i.e., 27 and 80 °C) on Zn and alkalis (Na2O and K2O) removal were studied by applying an experimental design. The results obtained show that Zn and K2O removal of 85% and 75% were achieved under the following conditions: Ozone as an oxidant agent and 0.1 M H2SO4 as an aqueous medium, temperature had no significant effect. The results are supported by thermodynamic diagrams and the possible chemical reactions are mentioned. Although the results also indicate that leaching under the above conditions dissolves up to 9% of iron, this loss is much less than leaching without the oxidizing conditions generated by the ozone. The BFS obtained from this treatment could be recirculated to the iron or steelmaking processes to recover iron values.

ACS Style

Ma. De Jesus Soria-Aguilar; Gloria Ivone Davila-Pulido; Francisco Raul Carrillo-Pedroza; Adrian Amilcare Gonzalez-Ibarra; Nallely Picazo-Rodriguez; Felipe López; Juan Ramos-Cano. Oxidative Leaching of Zinc and Alkalis from Iron Blast Furnace Sludge. Metals 2019, 9, 1015 .

AMA Style

Ma. De Jesus Soria-Aguilar, Gloria Ivone Davila-Pulido, Francisco Raul Carrillo-Pedroza, Adrian Amilcare Gonzalez-Ibarra, Nallely Picazo-Rodriguez, Felipe López, Juan Ramos-Cano. Oxidative Leaching of Zinc and Alkalis from Iron Blast Furnace Sludge. Metals. 2019; 9 (9):1015.

Chicago/Turabian Style

Ma. De Jesus Soria-Aguilar; Gloria Ivone Davila-Pulido; Francisco Raul Carrillo-Pedroza; Adrian Amilcare Gonzalez-Ibarra; Nallely Picazo-Rodriguez; Felipe López; Juan Ramos-Cano. 2019. "Oxidative Leaching of Zinc and Alkalis from Iron Blast Furnace Sludge." Metals 9, no. 9: 1015.

Journal article
Published: 01 January 2018 in Carbon
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ACS Style

Octavio González-Cordero; Luis E. Cruz-Barba; Sergio Gómez-Torres; Francisco R. Carrillo-Pedroza; Claudia Del R. Arellano Del Rio; Marco A. Sánchez-Castillo. Catalytic performance of oxygenated acid sites on activated carbon generated by non-isothermal plasma. Carbon 2018, 126, 552 -565.

AMA Style

Octavio González-Cordero, Luis E. Cruz-Barba, Sergio Gómez-Torres, Francisco R. Carrillo-Pedroza, Claudia Del R. Arellano Del Rio, Marco A. Sánchez-Castillo. Catalytic performance of oxygenated acid sites on activated carbon generated by non-isothermal plasma. Carbon. 2018; 126 ():552-565.

Chicago/Turabian Style

Octavio González-Cordero; Luis E. Cruz-Barba; Sergio Gómez-Torres; Francisco R. Carrillo-Pedroza; Claudia Del R. Arellano Del Rio; Marco A. Sánchez-Castillo. 2018. "Catalytic performance of oxygenated acid sites on activated carbon generated by non-isothermal plasma." Carbon 126, no. : 552-565.

Journal article
Published: 01 November 2017 in Revista Internacional de Contaminación Ambiental
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In this work, blast furnace dust (BFD) obtained from a steel dust collector is used as low-cost adsorbent material for chromium removal from steel industrial plating wastewater. This study shows that BFD present physical and chemical characteristics, such as chemical composition, magnetic properties and particle size, suitable for application in adsorption of ions such as chromium. Different kinetics approaches and isotherms models were evaluated to describe the adsorption process. According to results, chromium adsorption follows intra-particle diffusion with adsorption in active sites. Freundlich and Dubinin-Radushkevich isotherms parameter and low free energy obtained from isotherms studies indicate that chromium adsorption occurs by of a cooperative physical adsorption process, due to the electrostatic attraction between protonated FeOH+ and HCrO4–. Although the results indicate that BFD adsorb partially the chromium, it could represent an attractive low-cost absorbent option as complementary method for removal of chromium in the steel plating wastewater treatment.

ACS Style

Francisco Raul Carrillo-Pedroza; Universidad Autónoma De Coahuila Facultad De Metalurgia; Ma. De Jesús Soria Aguilar; Marco Sánchez-Castillo; Antonia Martínez Luévanos; Nallely Guadalupe Picazo Rodríguez; Universidad Autónoma De San Luis Potosí Facultad De Ciencias Químicas. ADSORPTION OF CHROMIUM FROM STEEL PLATING WASTEWATER USING BLAST FURNACE DUST. Revista Internacional de Contaminación Ambiental 2017, 33, 591 -603.

AMA Style

Francisco Raul Carrillo-Pedroza, Universidad Autónoma De Coahuila Facultad De Metalurgia, Ma. De Jesús Soria Aguilar, Marco Sánchez-Castillo, Antonia Martínez Luévanos, Nallely Guadalupe Picazo Rodríguez, Universidad Autónoma De San Luis Potosí Facultad De Ciencias Químicas. ADSORPTION OF CHROMIUM FROM STEEL PLATING WASTEWATER USING BLAST FURNACE DUST. Revista Internacional de Contaminación Ambiental. 2017; 33 (4):591-603.

Chicago/Turabian Style

Francisco Raul Carrillo-Pedroza; Universidad Autónoma De Coahuila Facultad De Metalurgia; Ma. De Jesús Soria Aguilar; Marco Sánchez-Castillo; Antonia Martínez Luévanos; Nallely Guadalupe Picazo Rodríguez; Universidad Autónoma De San Luis Potosí Facultad De Ciencias Químicas. 2017. "ADSORPTION OF CHROMIUM FROM STEEL PLATING WASTEWATER USING BLAST FURNACE DUST." Revista Internacional de Contaminación Ambiental 33, no. 4: 591-603.

Journal article
Published: 21 June 2017 in Metals
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During electrical steel processing, there are usually small variations in both chemical composition and thickness in the hot-rolled material that may lead to different magnetic properties for the same steel grade. Therefore, it is of great importance to know the effects of such variations on the final microstructure and magnetic properties of these steels. In the present investigation, samples of a specific grade of a commercial hot-rolled grain non-oriented (GNO) electrical steel were taken from different steel batches to investigate the effects of thickness and chemical composition (C, Sn, Mn and Ti) in the hot-rolled material on the final microstructure and magnetic properties (core losses and magnetic permeability) resulting from two different decarburizing annealing cycles. Hot-rolled samples were processed by cold rolling, intermediate annealing, temper-rolling and final decarburization annealing using the same processing parameters. The experimental results show that the minimum core losses and maximum magnetic permeability are obtained with the thinnest steel thickness and the largest grain size. Increasing Sb and Mn contents, and reducing the C and Ti concentrations also improve the magnetic behavior of these steels. It was also found the effect of grain size on the magnetic behavior is more significant than the one of crystallographic texture.

ACS Style

Nephtali Calvillo; Ma. De Jesús Soria; Armando Salinas; Emmanuel J. Gutiérrez; Iván A. Reyes; Francisco R. Carrillo. Influence of Thickness and Chemical Composition of Hot-Rolled Bands on the Final Microstructure and Magnetic Properties of Non-Oriented Electrical Steel Sheets Subjected to Two Different Decarburizing Atmospheres. Metals 2017, 7, 229 .

AMA Style

Nephtali Calvillo, Ma. De Jesús Soria, Armando Salinas, Emmanuel J. Gutiérrez, Iván A. Reyes, Francisco R. Carrillo. Influence of Thickness and Chemical Composition of Hot-Rolled Bands on the Final Microstructure and Magnetic Properties of Non-Oriented Electrical Steel Sheets Subjected to Two Different Decarburizing Atmospheres. Metals. 2017; 7 (6):229.

Chicago/Turabian Style

Nephtali Calvillo; Ma. De Jesús Soria; Armando Salinas; Emmanuel J. Gutiérrez; Iván A. Reyes; Francisco R. Carrillo. 2017. "Influence of Thickness and Chemical Composition of Hot-Rolled Bands on the Final Microstructure and Magnetic Properties of Non-Oriented Electrical Steel Sheets Subjected to Two Different Decarburizing Atmospheres." Metals 7, no. 6: 229.

Journal article
Published: 01 March 2016 in International Journal of Mineral Processing
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In this study, the kinetics of nitric acid leaching of a spent NiO–Al2O3 catalyst was investigated. The effect of leaching parameters such as reaction time (30–120 min), temperature (25–65 °C), stirring speed (500–1300 min− 1) and average particle size (63–300 μm) on Ni extraction were determined by statistical analysis. The results obtained show that extraction of about 85% was achieved under the following conditions: average particle size 75 μm, temperature 65 °C, reaction time 120 min, stirring speed 600 min− 1, nitric acid concentration 50% and solid/liquid ratio 1:3. The kinetics study indicates that diffusion through the product layer is the rate-controlling process during the reaction. The activation energy for the different particle size using a stochastic model was determined. Activation energy values from 13.07–25 kJ/mol are consistent with that reported for mixed or intermediate-controlled processes. The linear relationship observed between the activation energy Ea and the inverse of the initial particle diameter suggest that the dissolution rate controlling step may shift from product layer diffusion to intermediate-controlled process by decreasing particle size.

ACS Style

Juan Ramos-Cano; Gregorio González-Zamarripa; Fco. Raúl Carrillo-Pedroza; Ma. De Jesús Soria Aguilar; Abel Hurtado-Macias; Alejandro Cano-Vielma. Kinetics and statistical analysis of nickel leaching from spent catalyst in nitric acid solution. International Journal of Mineral Processing 2016, 148, 41 -47.

AMA Style

Juan Ramos-Cano, Gregorio González-Zamarripa, Fco. Raúl Carrillo-Pedroza, Ma. De Jesús Soria Aguilar, Abel Hurtado-Macias, Alejandro Cano-Vielma. Kinetics and statistical analysis of nickel leaching from spent catalyst in nitric acid solution. International Journal of Mineral Processing. 2016; 148 ():41-47.

Chicago/Turabian Style

Juan Ramos-Cano; Gregorio González-Zamarripa; Fco. Raúl Carrillo-Pedroza; Ma. De Jesús Soria Aguilar; Abel Hurtado-Macias; Alejandro Cano-Vielma. 2016. "Kinetics and statistical analysis of nickel leaching from spent catalyst in nitric acid solution." International Journal of Mineral Processing 148, no. : 41-47.

Original articles
Published: 25 September 2014 in Ozone: Science & Engineering
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In this work, the removal of cyanide from aqueous solutions was accomplished by using the synergetic effect of activated carbon and an oxidizing agent. A basic-character coconut shell activated carbon (CAC) was used; experiments were conducted in a semi-batch reactor, at 25 °C, initial pH of 11.5, and using cyanide solutions with initial concentration up to 1200 mg/mL. In particular, the beneficial effect of an oxidizing agent such as air, oxygen or ozone on the removal of cyanide by CAC was evaluated. At the optimum operating conditions found in this study, 1200 mg/mL of cyanide were totally decomposed in about 3 h, by using 1 g of CAC and about 2 mgO3/min. The experimental results were rationalized based on different mechanisms reported in the literature. The findings provide the basis to optimize the removal of cyanide from aqueous solutions in mining or metallurgical effluents by using the synergetic effect of CAC and ozone.

ACS Style

Marco Sánchez-Castillo; Francisco R. Carrillo-Pedroza; Flor Fraga-Tovar; Ma. De Jesús Soria Aguilar. Ozonation of Cyanide Catalyzed by Activated Carbon. Ozone: Science & Engineering 2014, 37, 240 -251.

AMA Style

Marco Sánchez-Castillo, Francisco R. Carrillo-Pedroza, Flor Fraga-Tovar, Ma. De Jesús Soria Aguilar. Ozonation of Cyanide Catalyzed by Activated Carbon. Ozone: Science & Engineering. 2014; 37 (3):240-251.

Chicago/Turabian Style

Marco Sánchez-Castillo; Francisco R. Carrillo-Pedroza; Flor Fraga-Tovar; Ma. De Jesús Soria Aguilar. 2014. "Ozonation of Cyanide Catalyzed by Activated Carbon." Ozone: Science & Engineering 37, no. 3: 240-251.

Journal article
Published: 17 June 2014 in Environmental Technology
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In this work, blast furnace (BF) residues were well characterized and then evaluated as an adsorbent material for arsenic removal from a mining-contaminated groundwater. The adsorption process was analysed using the theories of Freundlich and Langmuir. BF residues were found to be an effective sorbent for As (V) ions. The modelling of adsorption isotherms by empirical models shows that arsenate adsorption is fitted by the Langmuir model, suggesting a monolayer adsorption of arsenic onto adsorbents. Arsenate adsorption onto BF residue is explained by the charge density surface affinity and by the formation of Fe (II) and Fe (III) corrosion products onto BF residue particles. The results indicate that BF residues represent an attractive low-cost absorbent option for the removal of arsenic in wastewater treatment.

ACS Style

Fco. Raúl. Carrillo-Pedroza; Ma. De Jesús Soria-Aguilar; Antonia. Martínez-Luevanos; Víctor Narvaez-García. Blast furnace residues for arsenic removal from mining-contaminated groundwater. Environmental Technology 2014, 35, 2895 -2902.

AMA Style

Fco. Raúl. Carrillo-Pedroza, Ma. De Jesús Soria-Aguilar, Antonia. Martínez-Luevanos, Víctor Narvaez-García. Blast furnace residues for arsenic removal from mining-contaminated groundwater. Environmental Technology. 2014; 35 (23):2895-2902.

Chicago/Turabian Style

Fco. Raúl. Carrillo-Pedroza; Ma. De Jesús Soria-Aguilar; Antonia. Martínez-Luevanos; Víctor Narvaez-García. 2014. "Blast furnace residues for arsenic removal from mining-contaminated groundwater." Environmental Technology 35, no. 23: 2895-2902.

Original articles
Published: 04 March 2014 in International Journal of Coal Preparation and Utilization
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Experimentation was conducted for evaluating the conditions for the elimination of pyrite from a Mexican bituminous coal in an oxidizing aqueous medium of sulfuric acid and hydrogen peroxide in combination with complexing agents, specifically quercetin, oxalic, and phosphoric and citric acids. The results of the study revealed that the addition of quercetin (pentahydroxyflavone) at 25°C and oxalic and citric acid at 50°C enhances the removal of pyritic sulfur. The resulting improvement of the aqueous oxidizing process brings a new chemical aspect to consider when an oxidative dissolution process of a refractory mineral (e.g., pyrite) is considered.

ACS Style

E. T. Pecina; N. Rendón; A. Dávalos; F. R. Carrillo; D. Martínez. Evaluation of Process Parameters of Coal Desulfurization in Presence of H2O2and Complexing Agents. International Journal of Coal Preparation and Utilization 2014, 34, 85 -97.

AMA Style

E. T. Pecina, N. Rendón, A. Dávalos, F. R. Carrillo, D. Martínez. Evaluation of Process Parameters of Coal Desulfurization in Presence of H2O2and Complexing Agents. International Journal of Coal Preparation and Utilization. 2014; 34 (2):85-97.

Chicago/Turabian Style

E. T. Pecina; N. Rendón; A. Dávalos; F. R. Carrillo; D. Martínez. 2014. "Evaluation of Process Parameters of Coal Desulfurization in Presence of H2O2and Complexing Agents." International Journal of Coal Preparation and Utilization 34, no. 2: 85-97.

Original articles
Published: 01 July 2012 in Mineral Processing and Extractive Metallurgy Review
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Sulfide minerals are one of the most important sources of metal values. On the other hand, some sulfides such as pyrite are considered as one of the major impurities in solid fossil fuels such as coal. Oxidation of these sulfides has been one route to obtain base metals and to remove sulfur by leaching. This work summarizes the results obtained regarding the use of ozone in the oxidation of sulfide ores containing gold, silver, and copper. Results show that the extraction of gold and silver is increased by at least 15%, with lower cyanide consumption; the extraction of copper increased by 16% and in less time; and in the case of coal, sulfur is removed above 70%. These results indicate that oxidation treatment with ozone could be a promising clean technology to optimize ore processing, which is difficult to treat by current industrial methods.

ACS Style

Francisco Raúl Carrillo Pedroza; María De Jesús Soria Aguilar; Teresa Pecina Treviño; Antonia Martínez Luévanos; Marco Sánchez Castillo. Treatment of Sulfide Minerals by Oxidative Leaching with Ozone. Mineral Processing and Extractive Metallurgy Review 2012, 33, 269 -279.

AMA Style

Francisco Raúl Carrillo Pedroza, María De Jesús Soria Aguilar, Teresa Pecina Treviño, Antonia Martínez Luévanos, Marco Sánchez Castillo. Treatment of Sulfide Minerals by Oxidative Leaching with Ozone. Mineral Processing and Extractive Metallurgy Review. 2012; 33 (4):269-279.

Chicago/Turabian Style

Francisco Raúl Carrillo Pedroza; María De Jesús Soria Aguilar; Teresa Pecina Treviño; Antonia Martínez Luévanos; Marco Sánchez Castillo. 2012. "Treatment of Sulfide Minerals by Oxidative Leaching with Ozone." Mineral Processing and Extractive Metallurgy Review 33, no. 4: 269-279.

Conference paper
Published: 01 March 2012 in MRS Proceedings
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Dust originated from the iron and steelmaking containing undesirable compounds are not completely recycled because affects the process efficiency. These types of dust represents an economical lost as a consequence of values contents. However, dust have been characterized physically and chemically in order to study their potential environmental applications, as the removal of arsenic in wastewater. The results shows that dust have a superficial specific area between 16 and 20 m2/g, values considered high, typical of a material with adsorbent properties. Representative results of different tests adsorption of arsenic in the material described indicate that it is possible to reduce the arsenic levels in up to 95% from an initial concentration of 1 mg/L of total arsenic. The results indicate that the iron and steelmaking wet dust may represent a new option as material for the removal of heavy metals in water treatment.

ACS Style

V. Narvaez-García; A. Martínez-Luevanos; Francisco Raul Carrillo-Pedroza; Ma. De Jesús Soria Aguilar; M. Guajardo-Castillo; M. Chirino; E. Castro. Characterization of iron and steelmaking wet dust for arsenic remove in wastewaters. MRS Proceedings 2012, 1380, 1 .

AMA Style

V. Narvaez-García, A. Martínez-Luevanos, Francisco Raul Carrillo-Pedroza, Ma. De Jesús Soria Aguilar, M. Guajardo-Castillo, M. Chirino, E. Castro. Characterization of iron and steelmaking wet dust for arsenic remove in wastewaters. MRS Proceedings. 2012; 1380 ():1.

Chicago/Turabian Style

V. Narvaez-García; A. Martínez-Luevanos; Francisco Raul Carrillo-Pedroza; Ma. De Jesús Soria Aguilar; M. Guajardo-Castillo; M. Chirino; E. Castro. 2012. "Characterization of iron and steelmaking wet dust for arsenic remove in wastewaters." MRS Proceedings 1380, no. : 1.

Conference paper
Published: 24 February 2012 in MRS Proceedings
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The cyanide is the main process for the extraction of gold from its ores. This process produces rich cyanide solutions containing gold and silver, and waste cyanide solutions with different metal compounds such as copper, zinc and iron. These elements or compounds can be extracted in the form of high-value compounds as nanoparticles. This work presents some result of the remove and recovery of metallic values from waste cyanide solutions to obtain novel metallic nanoparticles. These materials were obtaining by modified sol-gel method from an industrial cyanide waste solution previously treated by advanced oxidation. This work reports the characterization from the nanoparticles by DRX and SEM-EDX. The results indicate that multimetallic nanoparticles can be obtained from cyanidation effluents.

ACS Style

Ma. De Jesús Soria Aguilar; Francisco Raul Carrillo-Pedroza; Luis Alfonso Garcia-Cerda; M. Sanchez-Castillo; A. Dávalos-Sánchez; D. Puente-Siller. Characterization of multimetallic nanomaterial obtained from cyanidation solutions. MRS Proceedings 2012, 1380, 1 .

AMA Style

Ma. De Jesús Soria Aguilar, Francisco Raul Carrillo-Pedroza, Luis Alfonso Garcia-Cerda, M. Sanchez-Castillo, A. Dávalos-Sánchez, D. Puente-Siller. Characterization of multimetallic nanomaterial obtained from cyanidation solutions. MRS Proceedings. 2012; 1380 ():1.

Chicago/Turabian Style

Ma. De Jesús Soria Aguilar; Francisco Raul Carrillo-Pedroza; Luis Alfonso Garcia-Cerda; M. Sanchez-Castillo; A. Dávalos-Sánchez; D. Puente-Siller. 2012. "Characterization of multimetallic nanomaterial obtained from cyanidation solutions." MRS Proceedings 1380, no. : 1.

Conference paper
Published: 24 February 2012 in MRS Proceedings
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Kaolin is an important material that is used in industrial applications, including ceramics, paper, paints, fiberglass, inks, pharmaceuticals, and cement. The presence of impurities, particularly iron and titanium bearing materials, imparts color to kaolin. During weathering or hydrothermal alteration, significant levels of iron oxides can be deposited that leave a concentrated kaolinitic clay unusable for industrial application. Therefore, several chemical methods have been applied to kaolin beneficiation in order to reduce these contaminants. Ferric oxide dissolution is of particular interest for producers of industrial minerals such as kaolin. The objective of this work was to examine the kinetics of iron dissolution form low grade kaolin using oxalic acid solutions. The effects of acid concentration and reaction temperature were studied. It was determined that the iron dissolution rate increases with oxalic acid concentration, temperature. Leaching data showed that iron dissolution from low grade kaolin is due to diffusion through the product layer. The activation energy of the process was 46.32 kJ/mol.

ACS Style

A. Martínez-Luévanos; L. E. Serrato-Villegas; M. G. Rodríguez-Delgado; Francisco Raul Carrillo-Pedroza. Kinetic Study of Iron Dissolution from Low Grade Kaolin Using Oxalic Acid Solutions. MRS Proceedings 2012, 1380, 1 .

AMA Style

A. Martínez-Luévanos, L. E. Serrato-Villegas, M. G. Rodríguez-Delgado, Francisco Raul Carrillo-Pedroza. Kinetic Study of Iron Dissolution from Low Grade Kaolin Using Oxalic Acid Solutions. MRS Proceedings. 2012; 1380 ():1.

Chicago/Turabian Style

A. Martínez-Luévanos; L. E. Serrato-Villegas; M. G. Rodríguez-Delgado; Francisco Raul Carrillo-Pedroza. 2012. "Kinetic Study of Iron Dissolution from Low Grade Kaolin Using Oxalic Acid Solutions." MRS Proceedings 1380, no. : 1.

Conference paper
Published: 25 April 2011 in Supplemental Proceedings
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This chapter contains sections titled: Introduction Experimental Procedure Results and Discussion Conclusions

ACS Style

Cerecedo S. Eduardo; Eleazar Salinas-Rodríguez; C. Luís; G. Longoria; R. Francisco; P. Carrillo; Hernández A. Juan. Kinetics Study of Alkaline Decomposition of Rubidium Jarosite in Ca(OH) 2 Media. Supplemental Proceedings 2011, 291 -298.

AMA Style

Cerecedo S. Eduardo, Eleazar Salinas-Rodríguez, C. Luís, G. Longoria, R. Francisco, P. Carrillo, Hernández A. Juan. Kinetics Study of Alkaline Decomposition of Rubidium Jarosite in Ca(OH) 2 Media. Supplemental Proceedings. 2011; ():291-298.

Chicago/Turabian Style

Cerecedo S. Eduardo; Eleazar Salinas-Rodríguez; C. Luís; G. Longoria; R. Francisco; P. Carrillo; Hernández A. Juan. 2011. "Kinetics Study of Alkaline Decomposition of Rubidium Jarosite in Ca(OH) 2 Media." Supplemental Proceedings , no. : 291-298.

Journal article
Published: 31 March 2011 in Applied Clay Science
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Kaolin is a clay with important industrial applications. Unfortunately, with iron oxides depositing on mineral particles during kaolin formation, much of this clay has become unusable for industrial applications. Two of the most important factors that affect the value of this raw material are its iron concentration and brightness. The goal of this work was to examine the leaching kinetics of iron from low grade kaolin using oxalic acid solutions. The effects of particle size, acid concentration, and reaction temperature were studied. It was determined that the iron dissolution rate increases with oxalic acid concentration, temperature, and decreased particle size. Leaching data showed that iron dissolution from low grade kaolin is due to diffusion through the product layer. The activation energy of the process was 46.32 kJ/mol.

ACS Style

A. Martínez-Luévanos; M.G. Rodríguez-Delgado; A. Uribe-Salas; Francisco Raul Carrillo-Pedroza; J.G. Osuna-Alarcón. Leaching kinetics of iron from low grade kaolin by oxalic acid solutions. Applied Clay Science 2011, 51, 473 -477.

AMA Style

A. Martínez-Luévanos, M.G. Rodríguez-Delgado, A. Uribe-Salas, Francisco Raul Carrillo-Pedroza, J.G. Osuna-Alarcón. Leaching kinetics of iron from low grade kaolin by oxalic acid solutions. Applied Clay Science. 2011; 51 (4):473-477.

Chicago/Turabian Style

A. Martínez-Luévanos; M.G. Rodríguez-Delgado; A. Uribe-Salas; Francisco Raul Carrillo-Pedroza; J.G. Osuna-Alarcón. 2011. "Leaching kinetics of iron from low grade kaolin by oxalic acid solutions." Applied Clay Science 51, no. 4: 473-477.

Journal article
Published: 01 January 2010 in International Journal of Oil, Gas and Coal Technology
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The removal of pyritic sulphur from a Mexican sub-bituminous coal in different solutions was investigated. The effects of type and concentration of reagents used and the presence of ozone as oxidant, in a room temperature, were studied. The relevant factors in pyrite dissolution were determined by means of the statistical analysis of variance and optimised by the response surface method. Kinetic models were also compared, showing that the dissolution of pyritic sulphur follows the kinetic model of the shrinking core model, with diffusion through the solid product of the reaction as controlling stage. The results of statistical analysis indicate that the use of ozone as oxidant improve the pyrite dissolution. [Received: December 20, 2009; Accepted: February 10, 2010]

ACS Style

Francisco Raul Carrillo-Pedroza; Ma. De Jesús Soria Aguilar; O. Villasana Martinez; E.T. Pecina Trevino; A. Davalos Sanchez. The removal of pyritic sulphur from a coal by ozone. International Journal of Oil, Gas and Coal Technology 2010, 3, 269 .

AMA Style

Francisco Raul Carrillo-Pedroza, Ma. De Jesús Soria Aguilar, O. Villasana Martinez, E.T. Pecina Trevino, A. Davalos Sanchez. The removal of pyritic sulphur from a coal by ozone. International Journal of Oil, Gas and Coal Technology. 2010; 3 (3):269.

Chicago/Turabian Style

Francisco Raul Carrillo-Pedroza; Ma. De Jesús Soria Aguilar; O. Villasana Martinez; E.T. Pecina Trevino; A. Davalos Sanchez. 2010. "The removal of pyritic sulphur from a coal by ozone." International Journal of Oil, Gas and Coal Technology 3, no. 3: 269.

Journal article
Published: 16 July 2009 in Energy & Fuels
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ACS Style

F. R. Carrillo-Pedroza; A. Dávalos Sánchez; M. Soria-Aguilar; E. T. Pecina Treviño. Coal Desulfurization in Oxidative Acid Media Using Hydrogen Peroxide and Ozone: A Kinetic and Statistical Approach. Energy & Fuels 2009, 23, 3703 -3710.

AMA Style

F. R. Carrillo-Pedroza, A. Dávalos Sánchez, M. Soria-Aguilar, E. T. Pecina Treviño. Coal Desulfurization in Oxidative Acid Media Using Hydrogen Peroxide and Ozone: A Kinetic and Statistical Approach. Energy & Fuels. 2009; 23 (7):3703-3710.

Chicago/Turabian Style

F. R. Carrillo-Pedroza; A. Dávalos Sánchez; M. Soria-Aguilar; E. T. Pecina Treviño. 2009. "Coal Desulfurization in Oxidative Acid Media Using Hydrogen Peroxide and Ozone: A Kinetic and Statistical Approach." Energy & Fuels 23, no. 7: 3703-3710.