Adsorption of Cr (VI) oxyanions onto modified wood pulp

被引：33
|
作者：
Abdel-Halim, ES [1 ]
Abou-Okeil, A [1 ]
Hashem, A [1 ]
机构：
[1] Natl Res Ctr, Text Res Div, Cairo, Egypt
来源：
POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING | 2006年 / 45卷 / 01期
关键词：
Cr (VI) oxyanion; wood pulp; adsorption isotherm;
D O I：
10.1080/03602550500373519
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A new adsorbent was prepared from wood pulp (WP) after reaction with epichlorohydrin and dimethylamine in the presence of pyridine and N,N-dimethylformamide (DMF). The adsorption of Cr (VI) from aqueous solutions by the so-prepared wood pulp adsorbent (WP-A) was investigated. Various factors affecting adsorption, such as pH, adsorbent concentration (1-5 g/L), agitation time (5-60 min), and Cr (VI) concentration (50-700), were taken into consideration. The adsorption of Cr (VI) onto (WP-A) was found to be pH-dependent and maximum adsorption was obtained at pH 3. The adsorption data obeyed Langmuir and Freundlich adsorption isotherms. The Langmuir adsorption capacity (Q(max)) was found to be 588.24 mg/g. Freundlich constants, K-F and n, were found to be 55.03 and 2.835, respectively.
引用
收藏
页码：71 / 76
页数：6
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