A5043109381- Metal Extraction and Bioleaching
- Water Quality Monitoring and Analysis
- Chemical and Environmental Engineering Research
- Mineral Processing and Grinding
- Water Resource Management and Quality
- Advanced oxidation water treatment
- Minerals Flotation and Separation Techniques
- Environmental and Ecological Studies
- Ionic liquids properties and applications
- Electrodeposition and Electroless Coatings
- Material Properties and Applications
- Public Policy and Governance
- Science, Technology, and Education in Latin America
- Layered Double Hydroxides Synthesis and Applications
- Cyclone Separators and Fluid Dynamics
- Engineering and Information Technology
- Soil Science and Environmental Management
- Iron and Steelmaking Processes
- Industrial Gas Emission Control
- Granular flow and fluidized beds
- Enterprise Management and Information Systems
- Food Drying and Modeling
- Social Sciences and Policies
- Membrane-based Ion Separation Techniques
- Natural Products and Biological Research
Politecnica Salesiana University
2024
University of Holguín
2013-2023
Rafael Advanced Defense Systems (Israel)
2019
Centro de Investigación de la Caña de Azúcar de Colombia
2008-2012
CIUDAD
2008-2010
In the nickel and cobalt production plant located in Punta-Gorda Cuba, an effluent liquor is obtained with several pollutants species of Ni(II)–NH3–CO2–SO2–H2O system. previous studies performance electrocoagulation (EC) for removal from this was demonstrated on a lab-scale bench-scale. research, geometric, electrical equilibrium parameters used as criteria scaling-up EC process were evaluated through hydrodynamic, kinetic operating cost analysis. For purpose, four semi-continuous...
The nickel removing by electrocoagulation of Ni(II)-NH3-CO2-SO2-H2O system was studied in a batch reactor 50 L useful volume, with stirring, and two pairs aluminum electrodes. operating parameters were concentration between 255 342 mg L-1, current density 11.0 16.6 mA cm-2, pH 8.34±0.06, mean temperature 58.4±3.9 oC retention time min. maximum removal 99.7 % at specific energy consumption 16.86 kWh kg-1 Al3+, 2.438 Ni the adsorption capacity 5819 g-1 Al3+. precipitate contained 37.2 true...
Se identificaron los factores que inciden en el incremento de la concentración del níquel disuelto suspensión carbonato básico níquel, tecnología lixiviación amoniacal. propuso un modelo estadístico para determinar función factores: amoníaco, dióxido carbono y azufre solución alimenta a las columnas destilación, pH suspensión. El se validó con antecedentes experimentales una serie ecuaciones equilibrio termodinámico sistema Ni (II)-NH3-CO32--S2O32--SO42--H2O. obtuvo mayor relación Ni/S...
The distillation process in the Ammoniacal Carbonate Leaching technology was studied at bench-scale and on industrial scale. dissolved sulfur effect Product-liquor that feeds to columns, Basic Nickel (BNC) properties operation expenses determined. When increasing liquor, we augment selectivity towards sulfate formation BNC molecule; therefore energy consumption thermal decomposition calcination increases. Also, nickel columns effluent increases due complex reaction with [SO42–] [S2O32–]...
This study reports nickel removing by electrocoagulation of Ni(II)-NH3-CO2-SO2-H2O system at laboratory scale. Experiments were done using Al/Al pair electrodes initial concentration between 293 and 1356 mg L–1 under operation parameters pH 8.6, current density 9.8 mA cm–2, electrolysis time 30 min, temperature 60 °C. The obtained results show removal efficiencies 97.7 99.7%. Kinetics modeling suggested combined effects external diffusion nucleation, as controlling step the chemical reaction...
This paper addresses the application of a heat conduction equation in one-dimensional bar context materials engineering.The considers temperature distribution along as function various parameters, including material density, specific heat, diffusivity and thermal conductivity, which can be constant or dependent on temperature.In addition, internal external sources are taken into account, well transfer surface bar.The problem solving this is closely related to understanding how transferred...
The lateritic ore drying in the Cuban nickel producing industry is realized within flighted rotary dryers. In this investigation, performance indicators regards to transfer of momentum, heat and mass were evaluated. dryers operate a concurrent configuration with combustion gas, at productivity between 40 t h−1 50 h−1. distribution function residence time (RTD) was best fitted model multi-branch tanks-in-series system, theoretical 51 ± 2 min experimental mean 61 min, rate 45 hydraulic...
This work presents the results obtained in carrying out mass and energy balances calcining kiln of company commander Ernesto Che Guevara, for determining consumption index petroleum used obtaining nickel oxide through thermal decomposition basic carbonate. It was shown that a production carbonate 12 t / h with 69% moisture, it is necessary to feed about 1100 kg fuel, an 91.67 fuel per ton load.