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In this study, the removal of lead using cassava peal modified with citric acid as adsorbent was studied. The biomass was characterized before and after the chemical modification and the kinetics of the adsorption process was evaluated. The experimental factor studied in the removal process of lead were time and temperature of reaction of cassava peel and citric acid; time of drying after reaction and biomass: acid ratio. Results show a successful sterification of biomass, yielding removals of lead up to 95 % with equilibrium times between 20 and 25 minutes. Adsorption kinetics was adjusted to a pseudo-second order model.

Remoción de plomo de soluciones acuosas usando cáscara de yuca modificada con ácido cítrico