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以壳聚糖粉末为原料,采用反相悬浮交联法制备了球状壳聚糖树脂(MCR)。通过静态吸附实验,研究了pH和温度对MCR吸附NO-2的影响以及MCR对水溶液中NO-2的吸附热力学和动力学特性。结果表明,在酸性条件下,313~328K时,MCR对NO-2有较好的吸附性能。吸附过程符合Langmuir吸附等温线模型,属于单分子层吸附。吸附过程符合拟二级动力学模型,受粒子内扩散和液膜扩散联合控制。
Abstract：Microspheres chitosan resin(MCR)were prepared by reverse phase suspension cross-linking method using chitosan powder as raw material.Static sorption experiments were carried out to study the influences of pH and temperature as well as the adsorption kinetics and thermodynamics of MCR for NO-2from aqueous solution.The results showed that the adsorption followed Langmuir isotherm model and appeared to be the monomolecular type.The adsorption process of MCR for NO-2followed pseudo-second order kinetics model and it was controlled by both intraparticle diffusion and liquid membrane diffusion during the adsorption process.
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基本信息:
DOI：10.16441/j.cnki.hdxb.2014.09.007
中图分类号:O647.3;TQ324
引用信息:
[1]吕欣,刘炳杰,汪东风,等.球状壳聚糖树脂对NO_2~-吸附特性的研究[J],2014,44(09):53-57+65.DOI:10.16441/j.cnki.hdxb.2014.09.007.
基金信息:
国家自然科学基金项目(31101330);; 海洋公益性专项基金项目(201005020-6)资助