neda Seyedi

Due to their remarkable properties, cellulose nanomaterials are emerging materials for wastewater treatment [1]. In this study, both pristine cellulose nanomaterial and modified cellulose nanomaterial with Polyethylenimine were prepared from the wood of the Corn plant for the removal of Cd(II) ions from waste water. After charactrizing the adsorbents, The effect of initial concentration, contact times, adsorbent dose, temperature, solution pH on Cd(II) ions removal was studied. Langmuir and Freundlich adsorption isotherms [2] were certainly fixed to a maximum Cd(II) ions uptake capability (Qmax) of 88 and 170 mg g-1 by Cellulose and modified Cellulose adsorbents, respectively. The pseudo-second-order and pseudo-firstorder kinetics model was well fitted to the uptake process [3]. Results revealed that the percentage removal (%R) of Cd(II) ions was increased by the presence of nitrogen and organic matter. Due to its high efficiency, modified Cellulose was selected for the regeneration study. The regeneration study was conducted after desorption of Cd(II) ions from the adsorbent by the addition of HCl, and the regenerated sorbent was reused as an adsorbent for at least 6 successive cycles [4]. The results indicated excellent recycling capabilities, and the adsorbent was used as adsorbing material for the removal of Cd(II) ions from modified Cellulose after 6 successive cycles without significant efficient loss.