In recent years, chemical modification of natural macromolecules, especially polysaccharides, has received considerable interest in an effort to improve their properties. For example, the biodegradability of natural polysaccharides reduces their shelf life and needs to be suitably controlled. The improvement in the properties of natural and synthetic polymers can be performed by graft copolymerization [21]. In graft copolymerization, natural polysaccharides are chemically modified by inclusion of synthetic, non-biodegradable monomers onto their backbone; the host polymer gains some of the desired properties of the guest monomers used for grafting ending up with novel polymer and properties. Therefore, it has been possible to develop efficient, shear stable, and less biodegradable flocculants by grafting synthetic polymers onto the backbone of natural ones [21]. Various methods for graft copolymerization such as radiation induced, chemical initiation etc., are reported in the literature [22]. Grafted polysaccharides also exhibit improved properties with respect to wastewater treatment