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在以离子液体1-丁基-3-甲基咪唑氯盐([C4mim]Cl)为溶剂,制备胶原和纤维素复合凝胶珠吸附剂过程中,加入少量壳聚糖对凝胶珠进行改性。吸附实验结果显示,胶原/纤维素/壳聚糖凝胶珠(CCHB-CS,质量比2/3/1)能有效吸附水溶液中的Ni 2+,相较于胶原/纤维素凝胶珠(CCHB,质量比1/1)和壳聚糖/纤维素凝胶珠(CCSHB,质量比1/1),CCHBCS对Ni 2+离子的吸附能力有所降低;溶液pH值会影响CCHB-CS对Ni 2+的吸附,pH7.0为最佳条件;Langmuir单分子吸附模型适用于描述CCHB-CS吸附行为。
In the process of preparing the collagen and cellulose composite gel beads adsorbent using 1-butyl-3-methylimidazolium chloride ([C4mim] Cl) as an ionic liquid, a small amount of chitosan was added to modify the gel beads Sex. The results of adsorption experiments showed that collagen / cellulose / chitosan gel beads (CCHB-CS, mass ratio 2/3/1) can effectively adsorb Ni 2+ in aqueous solution compared with collagen / cellulose gel beads CCHB, mass ratio 1/1) and chitosan / cellulose gel beads (CCSHB, mass ratio 1/1), CCHBCS decreased the adsorption capacity of Ni 2+ ions. The pH value of solution affected CCHB-CS Ni 2+ adsorption, pH7.0 is the best condition; Langmuir monomolecular adsorption model is suitable for describing the adsorption behavior of CCHB-CS.