摘要
以木薯淀粉为原料,通过交联改性制备木薯淀粉气凝胶,考察交联改性对木薯淀粉气凝胶吸附性能的影响.结果表明,改性前后的木薯淀粉气凝胶对亚甲基蓝的吸附均更符合准二级动力学模型;在等温吸附过程中,改性前后的木薯淀粉气凝胶对亚甲基蓝的吸附均较符合Langmuir模型,对亚甲基蓝的最大吸附量分别为103.01,166.92 mg/g.交联改性能增加木薯淀粉气凝胶对亚甲基蓝的吸附量,其主要原因是交联改性改变了木薯淀粉气凝胶的表面和内部结构.
Taking cassava starch as material,the article is to examine the effect of cross-linking modification on the adsorption properties of cassava starch aerogels through preparation of cassava starch aerogels by cross-linking modification.The results show that the adsorption of methylene blue by cassava starch aerogels before and after modification were more consistent with the quasi-secondary kinetic model;The adsorption of methylene blue on cassava starch aerogels before and after modification during isothermal adsorption was more in line with Langmuir’s model.The maximum adsorption capacity for methylene blue was 103.01 mg/g and 166.92 mg/g,respectively.Cross-linking modification can increase the adsorption of methylene blue on cassava starch aerogels,which is mainly due to the cross-linking modification of the surface and internal structure of the gel.
作者
黄婷
符珍
林莹
Huang Ting;Fu Zhen;Lin Ying(College of Light Industry and Food Engineering,Guangxi University,Nanning 530004,China)
出处
《宁夏大学学报（自然科学版）》
CAS
2021年第2期167-172,共6页
Journal of Ningxia University(Natural Science Edition)
基金
广西自然科学基金资助项目(2019GXNSFAA185014)。
关键词
木薯淀粉
交联改性
气凝胶
吸附
动力学模型
cassava starch
cross-linked modification
aerogel
adsorption
kinetic model
