Recently, numerous approaches have been studied for the development of cheaper and more effective flocculants containing natural polymers. Among these natural flocculants, polysaccharides deserve particular attention. These materials offer a better flocculant alternative because of their particular structure, physico-chemical characteristics, chemical stability, high reactivity and excellent selectivity towards aromatic compounds and metals, resulting from the presence of chemical reactive groups (hydroxyl, acetamido or amino functions) in polymer chains. [2]