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用壳聚糖对镍离子 (Ⅱ )的吸收条件进行研究 ,探索脱乙酰度、粒度大小 ,溶液的 pH值和镍离子 (Ⅱ )起始浓度等方面对壳聚糖吸附性能的影响 .结果表明 :壳聚糖对镍离子的吸附具有Langmuir吸附特征 ,其吸附最佳条件是壳聚糖脱乙酰度大于 90 % ,镍离子 (Ⅱ )溶液pH值为 7.5～8.0 .
The adsorption conditions of nickel ion (Ⅱ) were studied by chitosan, and the influence of the degree of deacetylation, particle size, pH value of the solution and the initial concentration of nickel ion (Ⅱ) on the adsorption properties of chitosan was explored. The adsorption of nickel ions by chitosan has the characteristics of Langmuir adsorption. The optimal conditions for the adsorption are chitosan deacetylation degree> 90% and nickel ion (Ⅱ) solution pH 7.5 ~ 8.0.