lt has been studied the influence of the concentration and the pH of solution of sodium alginate in the kinetic of coagulation of colloidal system of Fe(OH)3 with positive colloidal particles. From the experimental date we deduce that coagulation is better for 0.1% of concentration and pH=4.

lt has been studied the influence of the concentration and the pH of solution of sodium alginate in the kinetic of coagulation of colloidal system of Fe(OH)3 with positive colloidal particles. From the experimental date we deduce that coagulation is better for 0.1% of concentration and pH=4.

It has been studied the influence of the concentration and the pH of solution of tara gum in the coagulation of colloidal system of Fe(OH)3 with positive colloidal particles. The experimental data show that the coagulation is better for 0,1 g/75 ml solution of tara gum and the optimum pH is 5. The kinetic of coagulation was fast and finished after 5 minute.

It has been studied the influence of the concentration and the pH of solution of tara gum in the coagulation of colloidal system of Fe(OH)3 with positive colloidal particles. The experimental data show that the coagulation is better for 0,1 g/75 ml solution of tara gum and the optimum pH is 5. The kinetic of coagulation was fast and finished after 5 minute.

In the present work has been encapsulated the fungus Polyporussp powder (250mμ) with calcium alginate in the form of spherical pearls. We have studied the adsorption of the ions of Cu(II) by the fungus powder and by the pearls obtained from the fungus powder with calcium alginate in batch and in an ion exchange column.The optimal pH for the adsorption of the ions of Cu(II) is in the range of 4,5 to 5. The experimental data of the adsorption of Cu(II) are often described by the Langmuir model, it has achieved the following results: a) for the fungus powder the maximum adsorption capacity is qmax =23,15 mg/g , the constant of Langmuir is b=0,0663 , b) for the pearls of alginate with the fungus powder theqmax =5,385 mg/g and b=0,0089. The study of the adsorption of the pearls with the fungus powder in a packed column of ion exchange show that these pearls have a good capacity for the remov...

En el presente trabajo se ha encapsulado el hongo Polyporussp en polvo (250 mμ) con alginato de calcio en forma de perlas esféricas. Se ha estudiado la adsorción de los iones de Cu(II) por el hongo en polvo y por las perlas obtenidas en batch y en una columna de intercambio iónico. El pH óptimo para la adsorción de los iones de Cu(II) se encuentraen el intervalo de 4,5 a 5. Los datos experimentales de la adsorción del Cu(II) se describen por el modelo de Langmuir, se han obtenido los siguientes resultados: a) para el hongo en polvo la máxima capacidad de adsorción es qmax =23,15 mg/g , la constante de Lagmuir b=0,0663, b) para las perlas de alginato con el hongo encapsulado se tiene qmax =5,385 mg/g y b=0,0089. El estudio de la adsorción de las perlas con el hongo empaquetadas en una columna de intercambio iónico demuestran que estas perlas tienen una buena capacidad para la r...

The objective of this work is to prepare chitosan beads with magnetic properties for use in the adsorption of Cu (II). Through a process reported in the literature have been obtained with micro chitosan beads magnetite particles of2,5 mm diameter in the wet state and diameter of 0,8 mm when dry. Subsequently chitosan beads adsorption used for Cu (II), in a batch system, determining which optimum pH is in the range of 4.7 to 5.2. The study of the kinetics of the adsorption process showed that thermodynamic equilibrium is attained 250 min before starting the process. The experimental data described adsorption by the Langmuir model and found that the maximum adsorption capacity is qmax = 235,84 mg/g constant value Langmuir, b = 0,00442

El objetivo del trabajo es preparar perlas de quitosano con propiedades magnéticas para utilizarlas en la adsorción de Cu(II). Mediante un proceso reportado en la literatura se han obtenido perlas de quitosano con micro partículas de magnetita de 2,5 mm de diámetro en estado húmedo, y de 0,8 mm de diámetro en estado seco. Posteriormente las perlas de quitosano se emplean para la adosrción de Cu(II), en un sistema batch, determinándose que pH óptimo se encuentra en el intervalo de 4,7 a 5,2. El estudio de la cinéticadel proceso de adsorción demostró que el equilibrio termodinámico se alcanza antes de 250 min deiniciado el proceso. Los datos experimentales de la adsorción se describen por el modelo de Langmuir yse ha determinado que la máxima capacidad de adsorción es qmax=235,84 mg/g y valor de la constantede Langmuir, b=0,00442.