羧基化改性纤维素及其对苯丙胺的吸附性能研究  

Carboxylated Modified Cellulose and Its Adsorption Properties for Amphetamine

作　　者：张睿[1] 王璐颖 黄健[1] 林春香[1,2] ZHANG Rui;WANG Luying;HUANG jian;LIN Chunxiang(Department of Environment and Safety Engineering,Fuzhou University,Fuzhou,Fujian Province,350108;Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology,Fuzhou,Fujian Province,350108)

机构地区：[1]福州大学环境与安全工程学院,福建福州350108 [2]福建省农村废弃物绿色循环技术工程研究中心,福建福州350108

出　　处：《中国造纸学报》2025年第1期93-104,共12页Transactions of China Pulp and Paper

基　　金：国家自然科学基金(22208057);福建省自然科学基金(2020J01506)。

摘　　要：本研究以纤维素为原料,采用多元酸酐对其进行酯化改性,制备羧基化改性纤维素材料(Cell-COOH)。采用单因素实验对Cell-COOH的制备条件进行优化,对Cell-COOH的结构进行表征,并对其吸附性能及行为进行研究。结果表明,在纤维素与均苯四甲酸酐质量比1∶3、反应温度115℃、反应时间1.5 h的条件下,制备的Cell-COOH对20 mg/L苯丙胺溶液的平衡吸附量为34.59 mg/g;Cell-COOH对苯丙胺的吸附行为符合Langmuir等温吸附模型和准二级动力学模型,主要为单分子层化学吸附,吸附过程为自发的放热反应;同时,Cell-COOH经7次连续吸附-解吸循环实验后,对苯丙胺的吸附量可达到首次吸附的92.64%,具有良好的稳定性及可重复使用性能。In this study,cellulose was used as the raw material,and it was esterified by polyacidic anhydride to prepare the carboxylated mod⁃ified cellulose material(Cell-COOH).The preparation conditions of Cell-COOH were optimized through one-factor experiment,the structure of Cell-COOH was characterized,and its adsorption properties and behaviors were investigated.The results showed that the equilibrium ad⁃sorption capacity of Cell-COOH on 20 mg/L amphetamine solution was 34.59 mg/g under the conditions of cellulose to homophthalic anhy⁃dride mass ratio of 1∶3,reaction temperature of 115℃,and reaction time of 1.5 h.The adsorption behavior of Cell-COOH towards amphet⁃amine was in accordance with the Langmuir isothermal model and the pseudo-second kinetic model,which was mainly single-layer-chemisorp⁃tion,and the adsorption process was a self-motivated exothermic reaction.The adsorption capacity of Cell-COOH towards amphetamine was 92.64%of first adsorption after 7 cycles of adsorption-desorption experiments,showing a good stability and reusability.

关 键 词：纤维素 羧基化改性 苯丙胺 高效液相色谱法 

分 类 号：TS721[轻工技术与工程—制浆造纸工程] TQ352[化学工程]