Adsorption of Cr(VI) on crosslinked chitosan-Fe(III) complex in fixed-bed systems

被引：52

作者：

Demarchi, Carla Albertina ^{[1
]}

Debrassi, Aline ^{[1
]}

Dal Magro, Jacir ^{[2
]}

Nedelko, Natalia ^{[3
]}

Slawska-Waniewska, Anna ^{[3
]}

Dluzewski, Piotr ^{[3
]}

Greneche, Jean-Marc ^{[4
]}

Rodrigues, Clovis Antonio ^{[1
]}

机构：

[1] Univ Vale Itajai UNIVALI, Nucleo Invest Quim Farmaceut NIQFAR, BR-88302202 Itajai, SC, Brazil

[2] Univ Comunitaria Regiao Chapeco UNOCHAPECO, Area Ciencias Exatas & Ambientais, BR-89809000 Chapeco, SC, Brazil

[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[4] Univ Maine, UMR CNRS 6087, Lab Phys Etat Condense, F-72085 Le Mans, France

来源：

JOURNAL OF WATER PROCESS ENGINEERING | 2015年 / 7卷

关键词：

Chitosan-Fe complex; Hexavalent chromium; Fixed-bed column; Breakthrough curve; HEXAVALENT CHROMIUM; AQUEOUS-SOLUTION; WASTE-WATER; REMOVAL; COLUMN; IRON; BATCH; BIOSORPTION; ADSORBENT; CARBON;

D O I：

10.1016/j.jwpe.2015.05.003

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Fixed-bed column studies were conducted to evaluate the performance of crosslinked chitosan-Fe(III) complex (Ch-Fe) for the adsorption of Cr(VI) in aqueous medium under dynamic conditions. Solution pH, column bed height, inlet Cr(VI) concentration and influent flow rate were variable parameters for the present study. The results revealed that the prepared adsorbent had significant adsorption capacity (148.4 mg/g) for Cr(VI). The breakthrough data obtained for Cr(VI) was more adequately described by the Thomas and Clark models indicated that Cr(VI) adsorption mechanism by Ch-Fe was a Langmuir-type sorption and followed pseudo-second order kinetics monolayer chemical sorption. Good agreement was observed between the predicted theoretical breakthrough curves and the experimental results. The high Cr(VI) adsorption capacity and regeneration efficiency of Ch-Fe suggests its applicability in the removal of chromate ions present in industrial wastewater. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：141 / 152

页数：12

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