羧化壳聚糖/高岭土插层复合吸附剂的制备及其对Cu^(2+)的吸附性能  

Preparation of Carboxylated Chitosan/Kaolinite Intercalated Composite Adsorbent and Its Adsorption Performance for Cu^(2+)

作　　者：唐青 龙芷晴 石嘉丽 贾淦忞 李晓悦 严子军 TANG Qing;LONG Zhiqing;SHI Jiali;JIA Ganmin;LI Xiaoyue;YAN Zijun(Faculty of Environmental and Chemical Engineering,Zhaoqing University,Zhaoqing Guangdong 526100,China;Guangdong Provincial Key Laboratory of Environmental Health and Land Resource,Zhaoqing Guangdong 526100,China)

机构地区：[1]肇庆学院环境与化学工程学院,广东肇庆526100 [2]广东省环境健康与资源利用重点实验室,广东肇庆526100

出　　处：《辽宁化工》2025年第4期575-580,共6页Liaoning Chemical Industry

基　　金：肇庆市科技创新指导类项目(项目编号:2023040304007);肇庆学院创新科研团队项目(项目编号:TD202411);肇庆学院博士启动项目(项目编号:2019ZXBS01);肇庆学院大学生创新创业训练项目(项目编号:X202410580139)。

摘　　要：以高岭土为原料制备羧化壳聚糖插层高岭土复合吸附剂,探讨复合吸附剂对Cu^(2+)的吸附作用,用于处理废水中的重金属离子Cu^(2+)。实验先确定了复合吸附剂的最佳质量比,分别讨论复合吸附剂在吸附时温度、时间、pH以及Cu^(2+)初始浓度对Cu^(2+)吸附效果的影响。结果表明:在Cu^(2+)初始浓度为80mg·L^(-1),吸附温度为60℃,吸附时间为15 min,溶液p H值为5.0的条件下,吸附剂对Cu^(2+)的去除率最佳,吸附率达到了98.06%。通过动力学和等温吸附实验结果以及材料结构分析得出,吸附过程主要为化学吸附和Langmuir单分子层吸附,羧基壳聚糖对Cu^(2+)配位螯合作用和高岭土的吸附作用协同促进。This study prepared a chitosan intercalated kaolinite composite adsorbent using kaolinite as the raw material and investigated its adsorption effect on Cu^(2+)for treating heavy metal copper in wastewater.The experiment first determined the optimal mass ratio of the composite adsorbent and then examined the effects of temperature,time,pH,and initial Cu^(2+)concentration on Cu^(2+)adsorption.The results indicated that under the conditions of initial Cu^(2+)concentration of 80 mg/L,adsorption temperature of 60℃,adsorption time of 15 minutes,and solution pH of 5,the removal rate of Cu^(2+)by the adsorbent was optimal,reaching 98.06%.Kinetic and isotherm adsorption experiments,along with material structure analysis,revealed that the adsorption process was primarily chemical adsorption and Langmuir monolayer adsorption.The synergistic effect of chitosan's chelation and kaolinite's adsorption significantly enhanced the removal of Cu^(2+).

关 键 词：羧化壳聚糖 高岭土 复合吸附剂 Cu^(2+) 

分 类 号：TQ424.29[化学工程]