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首页> 外文期刊>Journal of Macromolecular Science. Pure and Applied Chemistry >Copper Adsorption on Chitosan-Derived Schiff Bases
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Copper Adsorption on Chitosan-Derived Schiff Bases

机译：壳聚糖衍生的席夫碱对铜的吸附

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The adsorption of Cu(II) ions onto the chitosan derived Schiff bases obtained from the condensation of chitosan with salicyaldehyde (polymer I), 2,4-dihydroxybenzaldehyde (polymer II) and with 4-(diethylamino) salicyaldehyde (polymer III) in aqueous solutions was investigated. Batch adsorption experiments were carried out as a function of contact time, pH, and polymer mass. The amount of metal-ion uptake of the polymers was determined by using atomic absorption spectrometry (AAS) and the highest Cu(II) ions uptake was achieved at pH 7.0 and by using sodium perchlorate as an ionic strength adjuster for polymers I, II, and III. The isothermal behavior and the kinetics of adsorption of Cu(II) ions on these polymers with respect to the initial mass of the polymer and temperature were also investigated; adsorption isothermal equilibrium data could be clearly explained by the Langmuir equation. The experimental data of the adsorption equilibrium from Cu(II) solution correlates well with the Langmuir isotherm equation.
机译：壳聚糖与水杨醛（聚合物I），2,4-二羟基苯甲醛（聚合物II）和4-（二乙氨基）水杨醛（聚合物III）在水溶液中缩合得到的壳聚糖衍生的席夫碱上吸附有Cu（II）离子。解决方案进行了调查。间歇吸附实验是根据接触时间，pH和聚合物质量进行的。通过使用原子吸收光谱法（AAS）确定聚合物对金属离子的吸收量，并在pH 7.0和使用高氯酸钠作为聚合物I，II的离子强度调节剂的情况下，获得最高的Cu（II）离子吸收量。和III。相对于聚合物的初始质量和温度，还研究了这些聚合物的等温行为和吸附动力学。 Langmuir方程可以清楚地解释吸附等温平衡数据。 Cu（II）溶液吸附平衡的实验数据与Langmuir等温方程密切相关。

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