Synthesis of some radiation grafted membrane for the removal of arsenic and some heavy metals from contaminated water

Abstract

In this project radiation grart copolymerization of ,tyrcne/malcie anhydl'ide (Sty/MAn) and methyl methacrylate! maleic anhydride (MM/\/MAn) binary monomer system onto low density polyethylene (LDPE), low density polypropylene (LOPP), polyethylene pellet (PEP), polypropylene pellet (PI'P), and heat pres~d polyethylene (llPI'E) membranes were investigated (Scheme I) .. The synthesiled gralled products "el'e tr~ated with different ammonia derivatives. ]n this context numerou~ ehelating functionaliz.ed radiation-graned polymeric material~ were synthesized such as polyethylene grafted polYlner of styrene/maleic anhydl'ide (PE_g_P(Sty/MAn)) with hydrazine, ph~nylhydrazine, hydroxylamine, hydroxylamine hydl'Oehloride, semicarbazide, thio,emicarhazide. thio~emicarbazide hydl'Oehloride and S_Benzyl_thiouronillm chloride (Scheme 2). ChdatiW' functionalization behavior of mdiation.grait~d polymeric material~ of synthe~i~ed polyethylene graited polymer or PE-g-l'(MMA/MAn) was also investigated. Anion exehUllgeable good quality polyvinyl alcohol (PV/\) hydrogel was syntilesi,ed through radiation technique. The synthesized grafted and chelating functionalized produ~ts.werc characterized by the gravimetric m~thod and infrared spectroscopic technique. The affinity of the treated grallcd film.,>and the hydrogel to recover arsenic and some heavy metals. such as fe(lIl), Cl'(III), Cu(II), Ni(ll), Mn(II), Pb(lI) W<ISinvestigated at room tcmp~rature, 11 was found that the ~ynthesized hydrogel remove 34.54% ar~enic and 59.03% fe(lIl) and the treated grafted membrall~s can remove 21.36% of Cu(lI) with varying amount 01. other metals..................................................................................................................