期刊
POLYMER BULLETIN
卷 76, 期 4, 页码 1861-1876出版社
SPRINGER
DOI: 10.1007/s00289-018-2433-8
关键词
Chitosan; Alginate; Complex; Ion imprinting; Cu(II) ion; Adsorption
资金
- Science and Technology Guiding Projects of Fujian Province [2015H0019]
- Natural Science Foundation of Fujian Province of China [2015J01197]
A novel Cu(II) ion-imprinted complex adsorbent [Cu(II)-IIP] from alginate and chitosan was prepared by a three-step process of beading-combining-crosslinking with Cu2+ as the template ion. The Cu(II)-IIP showed higher capacity and selectivity for Cu(II) than the non-imprinted polymer. The theoretical maximum adsorption capacity of Cu(II)-IIP reached 83.33mg/g, and the separation factor () for Cu(II) versus Zn(II) was 2.28. The adsorption of Cu2+ onto the Cu(II)-IIP was perfectly described by the Langmuir isotherm model. The adsorption kinetics agreed with the pseudo-first-order model in the first 8h and more fitted pseudo-second-order model after then. Weber-Morris model confirmed that the adsorption rate would be controlled dominantly by the intraparticle diffusion and the inner surface binding. Moreover, the Cu(II)-IIP complex adsorbent exhibited good regeneration, and the adsorption capacity was stable within the first three adsorption-desorption cycles without significant reduction.
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