偕胺肟纤维对还原蓝6#染料废水的吸附作用  

Study on Adsorption Properties of Amidoxime Fiber to Reduced Blue 6# Dye

作　　者：陶庭先[1] 何苏皖[1] 惠振京[1] 张勇[1] 吴琦[1] 

机构地区：[1]安徽工程科技学院生物化学工程系,安徽芜湖241000

出　　处：《精细化工》2010年第2期182-184,208,共4页Fine Chemicals

基　　金：国家自然科学基金资助项目(20771002)~~

摘　　要：以腈纶纤维(PAN)为原料,与羟胺溶液反应,将纤维侧链上的腈基转化为偕胺肟基(NH2CNOH),然后以这种功能化的腈纶纤维为基体,经配位反应将Fe3+螯合于纤维表面,形成偕胺肟合铁(Ⅲ)吸附纤维,再以其为吸附材料,吸附水溶液中的还原蓝6#染料。考察了工艺条件、吸附规律及吸附反应动力学。结果显示,最佳吸附工艺条件为:温度50℃,吸附时间60min。偕胺肟基纤维(AOCF)对还原蓝6#染料的吸附符合Freundlich等温吸附经验式和二级反应动力学特征。其速率常数k=1.32×1010e-69T08,活化能Ea=57.44kJ/mol。The amidoxime-Fe（ Ⅲ ） adsorption fiber was prepared from the acrylic fiber（PAN） reaction with the hydroxylamine solution, which makes the nitrile group in the side-chain of fiber turn to amidoxime（ NH2-C=N-OH）. The Fe^3＋ was then chelated on the fiber surface by coordination reaction to make this fiber adsorb the reduced blue 6 #. The adsorption of reduced blue 6# in the aqueous solution was investigated. The results showed that the best conditions are temperature（T） =50℃ and adsorption time （t） = 60 min. The absorption was accorded with the Freundlich isotherm and the character of the second-order reaction. The equation of reaction rate constant k=1.32×10^10e-6908/T and the activation energy Ea = 57.44 kJ/mol.

关 键 词：偕胺肟纤维 还原蓝6# 吸附 动力学 水处理技术与环境保护 

分 类 号：O647.3[理学—物理化学]