Fig. 6From: Modification of pomegranate waste with iron ions a green composite for removal of Pb from aqueous solution: equilibrium, thermodynamic and kinetic studiesDiffusion kinetic models for Pb2+adsorption. The Morris Weber model kinetic were don’t in various times. This model for Fe2+-PPC is depicted in blue. The Morris Weber model in the range of 0–30 min for Fe3+-PPC is depicted in red and in the range of 30–60 min is depicted in greenBack to article page