| 초록 |
The difficulty of nanocellulose processing into multidimensional materials restrict the wide and practical application of it. In this study, high performance bead type nanocellulose biosorbent was prepared using the chemically modified carboxy methylated cellulose nano-fibril (CMCNF). Thereafter, PEI was introduced to improve the Cr(VI) removal performance. CMCNF easily fabricated into bead formulation while unmodified CNF could not maintain its droplet shape. The PEI introduction was confirmed by FTIR, XPS, elemental analysis and positive surface charge conversion was elucidated through the zeta potential analysis. The PEI modification process significantly increased the Cr(VI) removal capacity of CMCNF by more than 700%, and as a result, PEI/CMCNF beads exhibited the excellent Cr(VI) adsorption capacity of 1300 mg/g. |
