摘要
活化凹凸棒石对三种阳离子染料有良好的脱色作用并符合Ｆｒｅｕｎｄｌｉｃｈ吸附等温式；脱色率随ｐＨ增加而递增，但各染料有差别；吸附过程似可分为两个阶段并呈现一级及应动力学的特征。用它作主要组份的吸附剂对阳离子染料生产废水的处理效果良好，脱色率和ＣＯＤｃｒ去除率可分别达到８７．５％～９９．８％和４５．４％～７２．３％；再生处理简单且其效果基本不降低，为阳离子染料生产废水的综合治理提供了一种有效而廉价的新型预处理方法。
Cheap pulverized activated attapulgite can remove cationic dyestuffs in aqueous solutions effectively and the decolorization could be stated by an expression similar to Freundlich model and characterized by the first order kinetics.The pretreatment of cationic dyestuff process wastewater could be carried out satisfactorily with adsorbents based on activated attapulgite;and the good removal rates of 87.5%～99.8% and 45.4%～72.3% could be achieved for color and COD respectively.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1997年第4期373-376,共4页
China Environmental Science
基金
上海市自然科学基金
关键词
凹凸棒石
脱色
阳离子染料
废水处理
attapulgite,adsorption,decolorization,cationic dyestuff process wastewater,pretreatment.
