【摘要】 通过对壳聚糖（CS）进行磷酸化改性,文章制备了N-亚甲基磷酸壳聚糖（MPCS）吸附剂,探讨了MPCS对溶液中Cd²⁺的吸附性能和吸附机理。结果表明:MPCS的吸附性能优于CS;MPCS用量为0.15 g,温度为303 K时,吸附率达到98.46%;其吸附行为符合Langmuir吸附模型,MPCS对Cd²⁺的最大饱和吸附容量为105.26 mg/g;MPCS对镉离子的吸附机理,主要是通过氨基以及磷酸酯基对Cd²⁺进行配位作用。更多还原

【Abstract】 N-methylene phosphate chitosan（MPCS） adsorbent was prepared by phosphorylation modification of chitosan（CS）,and discussed its adsorption performance and mechanism on Cd²⁺. The results showed that MPCS has higher adsorption performance than CS.The adsorption rate of Cd²⁺ was 98.46%, when the MPCS was 0.15 g and the temperature was 303 K.The MPCS adsorption behavior fitted the Langmuir model, while its maximum adsorption capacities of Cd²⁺ was 105.26 mg/g.The adsorption mechanism of MPCS on Cd²⁺ was mainly due to the coordination on Cd²⁺ by amino and phosphate ester group.更多还原