2.3 Adsorption of Pb+2
The adsorption of the Pb+2 from the aqueous solution was carried out via a batch technique
and at a fixed solution pH (5.5). At the first place, the adsorption isotherm had based on
studying the change of the Pb+2 concentrations against the operational time at constant
temperature of 25 ºC. Time intervals; particularly 10-120 min were applied at this stage. from Merck/ Germany.