摘要
研究了对二氧化硅加入壳聚糖(CS)、硅烷,进行改性、冷冻干燥制备气凝胶复合吸附剂,探索对Fe2+的吸附特性。吸附等温线符合Langmiur吸附模型,其最大吸附量333.3 mg/g,吸附常数0.75 L/mg。吸附动力学符合二级动力学方程,吸附速率常数1.05610 g/(mg·min),吸附容量125 mg/g。交联剂和冷冻干燥处理,提高了SiO2/CS吸附剂的吸附性能。
The aerogel composite adsorbent was prepared by adding silica and chitosan to silane and modified by Fe2+.The adsorption isotherm is in accordance with Langmuir adsorption model,with the maximum adsorption capacity of 333.3 mg/g and the adsorption constant of 0.75 L/mg.The adsorption kinetics was in accordance with the second-order kinetic equation.The adsorption rate was 1.05610 g/(mg·min),and the adsorption capacity was 125 mg/g.The adsorption properties of SiO2/chitosan adsorbent were improved by crosslinking agent and freeze-drying.
作者
张洪利
郝致尧
安浩浩
李吉辉
李月蓉
安杨翔
黄玲
ZHANG Hong-li;HAO Zhi-yao;AN Hao-hao;LI Ji-hui;LI Yue-rong;AN Yang-xiang;HUANG Ling(College of Chemistry and Materials,Weinan Normal University,Weinan 714000,China;Shenhua Yulin Energy Chemical Co.,Ltd.,Yulin 719302,China)
出处
《应用化工》
CAS
CSCD
北大核心
2020年第5期1212-1214,共3页
Applied Chemical Industry
基金
陕西省教育厅专项科研计划项目(16JK1271)
2018年陕西省大学生创新创业训练项目(201829023)
渭南师范学院大学生创新训练项目(18XK067)。
