Co(II) removal by magnetic alginate beads containing Cyanex 272®

被引：119

作者：

Ngomsik, Audrey-Flore ^{[1
,2
,3
,4
,5
]}

Bee, Agnes ^{[1
,2
,3
]}

Siaugue, Jean-Michel ^{[1
,2
,3
]}

Talbot, Delphine ^{[1
,2
,3
]}

Cabuil, Valerie ^{[1
,2
,3
]}

Cote, Gerard ^{[4
,5
]}

机构：

[1] Univ Paris 06, UMR7612, Lab Liquides Ion & Interfaces Chargees, F-75005 Paris, France

[2] CNRS, UMR7612, Lab Liquides Ion & Interfaces Chargees, F-75005 Paris, France

[3] ESPCI, UMR7612, Lab Liquides Ion & Interfaces Chargees, F-75005 Paris, France

[4] ENSCP, UMR7575, Lab Electrochim & Chim Analyt, F-75005 Paris, France

[5] CNRS, UMR7575, Lab Electrochim & Chim Analyt, F-75005 Paris, France

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 166卷 / 2-3期

关键词：

Magnetic separation; Nanoparticles; Heavy metals; Alginate; Maghemite; Remediation; HEAVY-METALS; AQUEOUS-SOLUTION; ADSORPTION; IONS; RECOVERY; WATER; SORPTION; NICKEL; COBALT; BIOSORPTION;

D O I：

10.1016/j.jhazmat.2008.11.109

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, a series of batch experiments is conducted to investigate the ability of magnetic alginate beads containing Cyanex 272 (R) to remove Co(II) ions from aqueous solutions. Equilibrium sorption experiments show a Co(II) uptake capacity of 0.4 mmol g(-1). The data are successfully modelled with a Langmuir equation. A series of kinetics experiments is then carried out and a pseudo-second order equation is used to fit the experimental data. The effect of pH on the sorption of Co(II) ions is also investigated. Desorption experiments by elution of the loaded beads with nitric acid at pH I show that the magnetic alginate beads could be reused without significant losses of their initial properties even after 3 adsorption-desorption cycles. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1043 / 1049

页数：7

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