Apolinar Picado, Joaquín Martínez
The drying of solids in a continuously worked vibrated fluidised bed dryer is studied by simulations. A model considering the drying of a thin layer of particles wetted with a multicomponent mixture...
Martha Benavente, Anna Sjörén, Joaquín Martínez
Mining and small-scale gold extraction operations have contaminated the water resources in certain regions of Nicaragua for decades. In this study, a biosorption process for a cost-effective removal...
Cinética de secado de la levadura cervecera (Saccharomyces cerevisiae) (2006)
Apolinar Picado, Rolando Mendieta, Joaquín Martínez
In this work, the drying kinetics of the brewer yeast was studied taking into account the shrinkage effect. The experimental data were obtained using three different temperatures. The volumetric and...
Especiación acuosa de cianuro y componentes derivados en lavados de colas de minerales de oro (2006)
Martha Benavente, Joaquín Martínez
In this work, the speciation of cyanide and related components in washing solutions for golden ore tailings from Limon Mine was simulated using the geochemical PHREEQC program. An ionic speciation...
Rodolfo Espinosa, Joaquín Martínez
Equilibrium diagrams for the extraction of oil from ground neem seed kernels (GNSK) with hexane and for the subsequent extraction of an insecticide mixture from deoiled GNSK with ethanol have been...
Determinación de los coeficientes de difusión multicomponente en capilares no saturados (2006)
Rafael Gamero, Joaquín Martínez
A study of simultaneous heat and mass transfer in partially saturated capillaries has been performed in order to determine the matrix of multicomponent diffusion coefficients in liquid phase. The...
Javier Ramírez, Joaquín Martínez
Transport parameters of gold ore tailings and other physical properties such as intrinsic permeability, particle size distribution, porosity and density were determined experimentally. Infiltration...
Influencia de un sólido sobre el secado de mezclas líquidas parcialmente miscibles (2006)
Marcia Vargas, Joaquín Martínez
Un estudio experimental del secado convectivo de un sólido humedecido con una mezcla líquida que exhibe separación de fases durante el proceso de evaporación ha sido efectuado. Los experimentos...
Retención de aroma durante el secado de extracto de café en un sistema cerrado (2006)
José F. Vílchez, Joaquín Martínez
Durante el secado de alimentos líquidos, componentes volátiles presentes en baja concentración que contribuyen al aroma y sabor del producto final son removidos junto con el agua. En consecuencia...