Synthesis of novel sugar based xanthates for the removal of copper and nickel harmful heavy metals from water

Abstract

Sugar based xanthates viz D-sorbitol xanthate and D-mannitol xanthate (DSX1, DSX2, DMX1 and DMX2) have been synthesized by the reaction of D-sorbitol (DS)/ D-mannitol (DM) with carbon disulfide (CS2) in basic medium at room temperature by varying carbon disulphide and base ratio with respect to sugars. The synthesized xanthates were extracted with ether, and dried in air. The xanthates were characterized by micro analytical data, Elemental analysis (C, H, O, S), Fourier transform infrared (FTIR) spectroscopy, and 1H nuclear magnetic resonance (1HNMR) spectroscopy. The synthesized xanthates were used for the removal of Cu2+and Ni2+ form aqueous solutions. The metal complexes formed during the process of removal of metal ions were confirmed with FTIR spectroscopy. The removal of copper and nickel metal from water was quantitatively determined by UV-visible absorption spectroscopy.