【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。更多还原

【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.更多还原