Adsorption studies of the removal of anions from aqueous solutions onto an adsorbent prepared from wheat straw

被引：0
|
作者：
XU Xing
机构：
来源：
Science China(Chemistry) | 2010年 / 06期
关键词：
wheat straw; anion; adsorption; maximum adsorption capacity;
D O I：
暂无
中图分类号：
X703 [废水的处理与利用];
学科分类号：
083002 ;
摘要：
Modified wheat straw (MWS) was prepared by the grafting of epichlorohydrin,triethylamine and ethylenediamine onto WS.The characteristics of MWS and its adsorption capacity for NO-3,PO34and Cr2O72were investigated.The results indicate that amine groups with positive charge have been introduced into the structure of MWS,and significantly increased its anion adsorption property.The functions of MWS dosage,the solution pH,the contact time and temperature have significant influence on the adsorption process,and the adsorption is well fitted with the Langmuir equation and pseudo second-order model.The maximum adsorption capacity of MWS for NO-3,PO34(P) and Cr2O27(Cr) is 53.5,62.4 and 386.2 mg g-1,respectively.
引用
收藏
页码：1414 / 1419
页数：6
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