纤维素
材料科学
水溶液中的金属离子
吸附
复合材料
弗伦德利希方程
水溶液
朗缪尔吸附模型
复合数
化学工程
金属
高分子化学
有机化学
化学
工程类
冶金
作者
Hao Ge,Hailong Huang,Min Xu,Qun Chen
出处
期刊:Cellulose
[Springer Nature]
日期:2016-06-18
卷期号:23 (4): 2527-2537
被引量:74
标识
DOI:10.1007/s10570-016-0973-3
摘要
A series of Cellulose/poly-ethylene imine (PEI) composites were prepared by grafting hyperbranched PEI onto cellulose chains in alkali/urea aqueous solvent system through “one step” method. The SEM results showed that the Cellulose/PEI composite maintained porous structure. The Cellulose/PEI composites were tested as Cu(II) adsorbents through thermodynamics and kinetics study. The adsorption process followed pseudo-second-order kinetics equation. The adsorption isotherms could be described by both Langmuir and Freundlich isotherm models. The maximum adsorption amount was calculated to be 285.7 mg/g. The composites showed good stability so that they could be used in a wide range of pH and temperature. Besides, the Cu(II) loaded Cellulose/PEI composite could also be easily regenerated by dilute sulfuric acid and still keep a major adsorption capacity. Finally, the adsorption capacities of Celluloes/PEI composite towards other metal ions, such as Zn(II), Ni(II), Cr(III) and Pb(II), were also demonstrated. It will be a new high-performance and environmental friendly material for sewage disposal and metal pollution treatment with promising developmental potential.
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