新型阴离子交换纤维对铬(Ⅵ)的静态吸附的研究  

Static Adsorption of Cr(Ⅵ) on a Novel Anion Exchange Fiber

作　　者：赵燕[1] 付丽红[1] 孙钢 

机构地区：[1]山东轻工业学院皮革化学与工程省级重点学科,山东济南250353 [2]圣马可(东莞)制革皮草有限公司,广东东莞523240

出　　处：《中国皮革》2007年第13期52-55,共4页China Leather

摘　　要：研究了自制阴离子交换纤维(3-脲基-2-羟基丙基纤维素)对铬(Ⅵ)的静态吸附性能。结果表明:此离子交换纤维对Cr(Ⅵ)的吸附曲线符合Langmuir等温方程;当Cr(Ⅵ)的原始质量浓度小于50mg/L时,吸附效果好;用不同酸调pH时,对Cr(Ⅵ)的吸附效果影响由大到小的次序为H2SO4>HNO3>HCl;先投离子交换纤维后再用HCl调pH值,比先调pH值后再投离子交换纤维效果好;pH值越低,达到最大吸附率时所需的温度越低,所能达到的最大吸附率越大;离子交换纤维的投加量越大,吸附达到饱和所需的时间越短;相同投加量条件下,时间越短,吸附率越低。Static adsorption properties of 3 - ureido - 2 - hydroxypropyl cellulose for Cr（Ⅵ） were studied. The results show that the adsorption behavior of the above anion exchange fiber for Cr（ Ⅵ ） obeys the Langmuir isotherm equation. When the initial Cr（Ⅵ） content is less than 50rag/L, the adsorption effect is good. And the influence of different acids on Cr（Ⅵ） adsorption is as follows ： H2SO4 〉 HNO3 〉 HCl. It is better that the pH value is adjusted with HCl after anion exchange fiber is mixed with Cr （Ⅵ ） solution. The lower the pH value, the lower temperature needed and the bigger adsorption rate is. The more the anion exchange fiber, the less time needed for adsorption saturation. With the same anion exchange fiber dosage, the less the time, the lower the adsorption rate.

关 键 词：阴离子交换纤维 吸附 Cr(Ⅵ) 

分 类 号：X703[环境科学与工程—环境工程]