Adsorption of As(III) on chitosan-Fe-crosslinked complex (Ch-Fe)

被引：51
作者：
dos Santos, Helen Helena [1 ]
Demarchi, Carla Albertina [1 ]
Rodrigues, Clovis Antonio [1 ]
Greneche, Jean Marc [2 ]
Nedelko, Nataliya [3 ]
Slawska-Waniewska, Anna [3 ]
机构：
[1] Univ Vale Itajai, NIQFAR, BR-88302202 Itajai, SC, Brazil
[2] Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France
[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
来源：
CHEMOSPHERE | 2011年 / 82卷 / 02期
关键词：
Chitosan iron complex; As(III); Adsorption isotherm; Mossbauer spectroscopy; ARSENIC REMOVAL; WATER; AS(V); IRON; MICROSPHERES;
D O I：
10.1016/j.chemosphere.2010.09.033
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
It was reported the adsorption of As(III) on the surface of the chitosan-Fe-crosslinked complex. Theoretical correlation of the experimental equilibrium adsorption data for As(III)/Ch-Fe system is best explained by the non-linearized form Langmuir-Freundlich isotherm model. At optimum conditions, pH 9.0, the maximum adsorption capacity, calculated using the Langmuir-Freundlich isotherm model was 13.4 mg g(-1). The adsorption kinetics of As(III) onto Ch-Fe are described by the pseudo-first-order kinetic equation. The results of the Mossbauer spectroscopy showed that there is no redox process on the surface of the adsorbent. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：278 / 283
页数：6
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