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

页码：71 / 76

页数：6

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