尿素基纤维的制备及对水中Cu^(2+)和Cd^(2+)的吸附  

Preparation of Urea-based Fiber and Adsorption of Cu^(2+) and Cd^(2+) in Water

作　　者：刘莉[1] 朱晓帆[2] 刘家丽[2] 侯旭[2] 

机构地区：[1]四川大学建筑与环境学院,四川成都610065 [2]四川大学分析测试中心,四川成都610065

出　　处：《化工环保》2007年第2期184-187,共4页Environmental Protection of Chemical Industry

摘　　要：以棉纤维为原料,经氯化和取代反应,制得尿素基纤维并用于水中Cu2+和Cd2+的吸附,考察了各种因素对吸附效果的影响。尿素基纤维对Cu2+和Cd2+的吸附可用Langmuir等温吸附方程描述,吸附过程可看成单层吸附。较佳吸附条件:重金属离子溶液pH为5,流量为7mL/min。用过的尿素基纤维经2mol/L的盐酸洗脱再生后,对Cu2+的吸附、解吸、再吸附的性能良好,可重复使用。Using cotton fiber as raw material, urea-based fiber was prepared via chlorination and substitution and used to adsorb Cu^2＋ and Cd^2＋ in water. The factors affecting adsorption were studied. The adsorption of Cu^2＋ and Cd^2＋ on urea-based fiber can be described using Langmuir equation and regarded as monolayer adsorption. The better adsorption conditions are as follows： heavy metal ion solution pH 5 and flow rate 7 mL/min. After regenerated by elution with 2 mol/L HCl, the used ureabased fiber can be reused with a good ability of adsorption-desorption-readsorption for Cu^2＋.

关 键 词：棉纤维 尿素基纤维 铜离子 镉离子 吸附 

分 类 号：TQ314.253[化学工程—高聚物工业]