摘要
利用甘蔗渣提取纤维素修饰环糊精聚合物,制备了可再生纤维素/环糊精聚合物(SUG-EPI-CDP)吸附剂。采用傅利叶红外光谱仪(FT-IR)与热重分析仪(TGA)对材料进行表征,同时考察了该材料对水中亚甲基蓝(MB)吸附特性和机理的影响。结果表明:在溶液pH=7、温度为30℃条件下,SUG-EPI-CDP可在120 min内有效去除MB,去除率达80.9%。通过模型拟合发现,SUG-EPI-CDP对MB的吸附是自发且吸热的过程,符合准二阶动力学方程和Langmuir等温线模型。该吸附剂实验最大吸附量达8.1 mg/g,远高于其他废料所制备的吸附剂。结果表明:利用可再生纤维素修饰可有效提高环糊精聚合物的吸附性能,同时为甘蔗渣资源化利用提供了新途径。
Renewable cellulose/cyclodextrin polymer(SUG-EPI-CDP)adsorbent was successfully prepared by extracting cellulose from bagasse to modify cyclodextrin polymer.The material was characterized by Fourier infrared spectrometer(FT-IR)and thermogravimetric analyzer(TGA),and the adsorption characteristics and mechanism of methylene blue(MB)on water were investigated.The results showed that under pH 7 and 30℃,the removal rate of MB could reach 80.9%within 120 min by SUG-EPI-CDP.The model fitting shows that the adsorption process is spontaneous and endothermic,which is fitted well with the pseudo-second-order kinetic equation and Langmuir isotherm model.The maximum adsorption capacity of SUG-EDI-CDP is 8.1 mg/g,which is much higher than that of other adsorbents prepared from waste.The results show that the adsorption capacity of cyclodextrin polymer can be improved effectively by using renewable cellulose,and a new way is provided for bagasse resource utilization.
作者
陈雯婧
吴远悦
谢知音
于金贝
彭琦
CHEN Wenjing;WU Yuanyue;XIE Zhiyin;YU Jinbei;PENG Qi(College of Resources and Environment,Chengdu University of Information Technology,Chengdu 610225,China)
出处
《合成化学》
CAS
2023年第1期52-60,共9页
Chinese Journal of Synthetic Chemistry
基金
2021年四川省大学生创新创业训练计划项目(202110621041)
成都信息工程大学科研基金资助项目(KYTZ202117)。
关键词
可再生纤维素
环糊精聚合物
吸附
亚甲基蓝
资源化
renewable cellulose
cyclodextrin polymer
adsorption
methylene blue
recycling
