Wastewater treatment by radiation grafted lignocellulosic materials

Radiation induced graft copolymerization of acrylamide/acrylic acid (AAm/AAc) binary monomers system onto pulped bagasse and rice straw has been performed. The surface and structure morphology of the pulped bagasse and rice straw were investigated by scanning electron microscopy (SEM) and infrared spectroscopy (FTIR). the factors affecting the abilities of the prepared materials for removing heavy metal ions and dyes from aqueous solution were studied. It was found that the maximum metal uptake is ordered in the sequence of Pb2+> Cu2+>Ni2+. Also the adsorption was found to be increased with the Ph of the feeding solution. The possibility of the removal of four dyes: acid blue 7 (xylene blue), wegocet yellow 4 Gl (direct yellow 44), congo red (direct red 28) and romacryl blue 3 G (blue 3) were investigated. The adsorption capacity of such investigated dyes was found to be remarkably affected by Ph of the feed solution