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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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Batch adsorption tests were performed to evaluate the applicability of adsorption kinetic model by using hydrogel chitosan bead crosslinked with glutaraldehyde (HCB-G) for Cu(II) as cation and/or phosphate as anion. Pseudo first and second order model were applied to determine the sorption kinetic property and intraparticle and Boyd equation were used to predict the diffusion of Cu(II) and phosphate at pore and boundary-layer, respectively. According to the value of theoretical and experimental uptake of Cu(II) and phosphate, pseudo second order is more suitable. On comparison with the value of adsorption rate constant (k), phosphate kinetic was 2-4 times faster than that of Cu(II) at any experimental condition indicating the electrostatic interaction between ${NH_3}^+$ and phosphate is dominated at the presence of single component. However, when Cu(II) and phosphate simultaneously exist, the value of k for phosphate was sharply decreased and then the difference was not significant. Both diffusion models confirmed that the sorption rate was controlled by film mass transfer at the beginning time (t < 3 hr) and pore diffusion at next time section (t > 6 hr).
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참고문헌 (21)
참고문헌 신청
An, B. / 2015 / Preparation and characterization of an organic/inorganic hybrid sorbent (PLE) to enhance selectivity for As (V) / J. Hazad. Mater. 289:54~62
Boyd, G. E. / 1947 / The exchange adsorption of ions from aqueous solutions by organic zeolites. II: Kinetics / J. Am. Chem. Soc. 69:2836~2848
Clifford, D. / 1982 / Multicomponent ion-exchange calculations for selected ion separations / Ind. Eng. Chem. Fundam. 21:141~153
Garcia-Reyes, R. B. / 2010 / Adsorption kinetics of chromium(III) ions on agro-waste materials / Bioresour. Technol. 101:8099~8108
Ghodbane, L. / 2008 / Kinetic and equilibrium study for the sorption of cadmium(II) ions from aqueous phase by eucalyptus bark / J. Hazard. Mater. 152:148~158
Boyd, G. E. / 1947 / The exchange adsorption of ions from aqueous solutions by organic zeolites. II: Kinetics / J. Am. Chem. Soc. 69:2836~2848
Clifford, D. / 1982 / Multicomponent ion-exchange calculations for selected ion separations / Ind. Eng. Chem. Fundam. 21:141~153
Garcia-Reyes, R. B. / 2010 / Adsorption kinetics of chromium(III) ions on agro-waste materials / Bioresour. Technol. 101:8099~8108
Ghodbane, L. / 2008 / Kinetic and equilibrium study for the sorption of cadmium(II) ions from aqueous phase by eucalyptus bark / J. Hazard. Mater. 152:148~158
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