SÍNTESIS DE HIDROGELES DE N-[3-(DIMETILAMINO) PROPIL] METACRILAMIDA PARA LA RETENCIÓN DE METALES

M. FLORENCIA GARCÍA MANZANO Y CECILIA I. ALVAREZ I..

Revista Iberoamericana de Polímeros

Editorial de la Universidad del País Vasco

Año: 2010 vol. 11 p. 228 - 241

1988-4206

Crosslinked polymer material containing functional groups (carboxylic acids, amines, hydroxyl and sulfonic acids) can be used as complexing agents for removing metal ions from aqueous solutions, sometimes selectively and with the possibility of their recovery, presenting advantages over other techniques for their removal. The removal of metals is a possible solution to the problem of pollution affecting water quality. Based on this important application, the preparation of new hydrogels of N-[3-(dimethylamine) propyl] methacrylamide with different concentrations of crosslinking agent to be used in the removal of Cu2+ and Pb2+ from aqueous solutions, is presented. The retention was effective and the values of retention, resulted high, especially when solutions of low initial concentrations were used. The results indicated also that the experimental data fit the Langmuir model, which postulates that the surface of the adsorbent has a fixed number of identical and defined active sites, the adsorption is of monolayer type, even on a homogeneous surface without lateral interaction between molecules of the adsorbent in which all active centers have the same enthalpy of adsorption