Removal of lead (II)‎ from aqueous solution using chitosan impregnated granular activated carbon

Abstract EN

The use of biopolymer material Chitosan impregnated granular activated carbon CHGAC as adsorbent in the removal of lead ions pb2+ from aqueous solution was studied using batch adsorption mode.

The prepared CHGAC was characterized by Scanning Electronic Microscopy (SEM) and atomic-absorption spectrophotometer.

The adsorption of lead ions onto Chitosanimpregnated granular activated carbon was examined as a function of adsorbent weight, pH and contact time in Batch system.

Langmuir and Freundlich models were employed to analyze the resulting experimental data demonstrated that better fitted by Langmuir isotherm model than Freundlich model, with good correlation coefficient.

The maximum adsorption capacity calculated from the pseudo second order model in conformity to the experimental values.

This means that the adsorption performance of lead ions onto CHGAC follows a pseudo second order model, which illustrates that the adsorption of Pb2+ onto CHGAC was controlled by chemisorption.

The granular activated carbon GAC impregnated by Chitosan was effectively applied as adsorbent for the elimination of lead ions from aqueous solution.