化工学报2017，Vol.68Issue(3)：1253-1261,9.DOI:10.11949/j.issn.0438-1157.20161439
乙二胺丙酰化交联壳聚糖微球对甲基橙的吸附性能
Adsorption performance of ethylenediamine propionyl crosslinked chitosan microspheres to methyl orange
摘要
Abstract
By propylene acylation crosslinked chitosan microspheres (AGCS) reacting with ethylenediamine, the ethylenediaminepropionyl crosslinked chitosan microspheres (EAGCS) with an abundant of amine groups were prepared. The structure of EAGCS was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction analysis (XRD) respectively. The particle size was identified by laser particle size analyzer. The effects of the pH, temperature, concentration and EAGCS dosage of methyl orange(MO) solution on adsorption performance were also investigated systematically. The results show that the structure of EAGCS with spherical morphology consistents with expected design structure, the volume average particle size of EAGCS is 57.4μm and the particle size distribution coefficient is 1.53. It's also found that the highest adsorption capacity and highest removal rate are up to 545.40 mg·g?1 and 99.6% respectively under the optimal conditions. Furthermore, the adsorption thermodynamics studies indicate that the adsorption is a spontaneous as well as exothermic process, also the kinetic and isothermal adsorption model studies suggest that this adsorption kinetics is pseudo-second-order, which is fit to Langmuir and Freundlich isothermal adsorption model.关键词
壳聚糖/交联壳聚糖微球/制备/甲基橙/吸附/模型Key words
chitosan/crosslinked chitosan microspheres/preparation/methyl orange/adsorption/model分类
化学化工引用本文复制引用
赵世鹏,冯宗财,袁爽,宋秀美,梁楚欣,刘芳..乙二胺丙酰化交联壳聚糖微球对甲基橙的吸附性能[J].化工学报,2017,68(3):1253-1261,9.基金项目
广东省自然科学基金项目(S2011010001544) （S2011010001544）
高分子材料工程国家重点实验室开放课题基金项目( KF201208) （ KF201208）
国家星火计划项目(2012GA780015) （2012GA780015）
湛江市科技计划项目(2015A02008).supported by the Natural Science Foundation of Guangdong Province(S2011010001544), the Open Foundation of State Key Laboratory of Polymer Materials Engineering(KF201208), the National Spark Program Project (2012GA780015) and the Science and Technology Plan Projects of Zhanjiang City(2015A02008). （2015A02008）
