Removal of copper ions from aqueous solutions using polypyrrole and its nanocomposites

In this article, preparation of polypyrrole and its nanocomposites as adsorbents were discussed and the capability of separation of copper ions from aqueous solution were studied. polypyrrole was prepared by chemical oxidative polymerization method of pyrrole using fecl3 as an oxidant. the removal of cu (ii) was investigated using ppy, ppy/tio2 and ppy/tio2/dhsna nanocomposites. the products were investigated in terms of morphology and chemical structure with scanning electron microscopy (sem) and fourier-transform infrared spectroscopy (ftir). batch studies were performed to evaluate the influence of various experimental parameters such as ph, ion dosage and contact time. optimum conditions for copper ions removal were found to be ph 3, ion dosage of 50 mg l-1 and the equilibrium time equals to 30 minutes. it was also found that the equilibrium adsorption isotherm was better described by freundlich adsorption isotherm model.