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 obtained bead of calcium alginate wit micro-particles of magnetite. The optimum pH for adsorption of Cu (II) lie between 4,5 and 5. From the study of the kinetic of adsorption was determined that the thermodynamic equilibrium was reached after 200 min. The adsorption data fitted well with the Langmuir model and showed the maximum adsorption capacity q(max)= 57,47 mg/g and b = 0,0784.

It has been obtained bead of calcium alginate wit micro-particles of magnetite. The optimum pH for adsorption of Cu (II) lie between 4,5 and 5. From the study of the kinetic of adsorption was determined that the thermodynamic equilibrium was reached after 200 min. The adsorption data fitted well with the Langmuir model and showed the maximum adsorption capacity q(max)= 57,47 mg/g and b = 0,0784.