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磁性壳聚糖对Pr(ⅲ)离子的吸附性能研究

Study on Pr3+ Ion Adsorption Capacity on Cross-linked Magnet Chitosan

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【作者】 宋立民李继平张淑娟

【Author】 SONG Li-min 1, LI Ji-ping 1, ZHANG Shu-juan 2(1. Liaoning Normal University Dalian 116029,China 2. Department of Chemistry, Fuzhou University Fuzhou 350002 ,China)

【机构】 辽宁师范大学福州大学 辽宁大连116029辽宁大连116029福建福州350002

【摘要】 用脱乙酰度为 98%的壳聚糖包埋自制的磁流体并用戊二醛交联制成磁性壳聚糖 (MCG) ,研究了MCG对Pr(ⅲ )离子的吸附性能 ;发现MCG在较低的pH值下 ,最高吸附率可达到 90 %以上 ,吸附性能受温度的影响较小 ,并具有良好的重复使用性和动力学性能 ,其吸附行为满足Langmuir等温式。

【Abstract】 Magnet chitosan (MCG) was prepared with water soluble chitosan coated on magnetite particles, which was obtained by coprecipitation of Fe 3+ and Fe 2+ in alkaline solution, and then cross-linked with glutaraldehyde. The adsorption capacity of Pr 3+ ions on the magnet chitodan was studied. The adsorption capacity of Pr 3+ ions on MCG better than on chitosan was found.The highest rate of adsorption still reached over 90% on MCG in lower pH. MCG can be reused five times,it’s adsorption capacity was still high, but greatly influenced by pH. It’s behavior was coincided with the equation of Langmuir.

【关键词】 壳聚糖磁性壳聚糖Pr(ⅲ)离子
  • 【文献出处】 辽宁化工 ,Liaoning Chemical Industry , 编辑部邮箱 ,2001年12期
  • 【分类号】O647.3
  • 【被引频次】5
  • 【下载频次】95
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