adsorption of co(ii) ions from aqueous solutions using nife2o4 nanoparticles

In this study, nife2o4 nanoparticles (nife2o4 nps) were prepared through co-precipitation method and subsequently used for the removal of co(ii) ions from aqueous solutions. the nife2o4 nps were characterized by transmission electron microscopy (tem), x-ray diffraction spectrometry (xrd), and brunauer-emmett-teller (bet) surface area analysis. in batch tests, the effects of variables such as ph (2-10), adsorbent dose (0.006-0.08 g), contact time (0-90 minutes), and temperature (25-55 °c) on co(ii) ions removal were examined and optimized values were found to be 7, 0.02 g, 70 minutes, and 25 ◦c, respectively. in addition, the experimental data were fitted well to the langmuir isotherm model and the maximum adsorption capacity was found to be 322.5 mg/g. kinetic experiments were also conducted to determine the rate at which co(ii) ions are adsorbed onto the nife2o4 nps.