Efficiency evaluating of modified fullerene nanofiltration on removal of heavy metals from aqueous media

The aim of this study has investigated the removal and reduction of heavy metals such as nickel and cadmium by filtration of modified Nano-fullerene (C60) with tetrahydrofuran. The optimum conditions have been evaluated for the removal of heavy metal ions by nano-adsorbents, which are pH, adsorbent concentration, adsorbent amount, time and temperature. The results show optimum conditions for both ions are almost the same amount. The adsorption of both ions was investigated with the two-oxidation number by adsorption isotherm models. The results show that the best absorption isotherm for Cd2+ is Dobbin-Raduskvich isotherm and for Ni2+ is Freundlich isotherm. The absorption process for both ions is physical, monolayers and exothermic. The data show that the modified nanofullerene has a high thermal and mechanical resistance and is completely stable, which can be used for more than 20 times with high efficiency of %91 without losing its activity.