Biosorption of chromium by alginate extraction products from Sargassum filipendula: Investigation of adsorption mechanisms using X-ray photoelectron spectroscopy analysis

被引：70

作者：

Bertagnolli, Caroline ^{[1
,2
]}

Uhart, Arnaud ^{[3
]}

Dupin, Jean-Charles ^{[3
]}

Carlos da Silva, Meuris Gurgel ^{[1
]}

Guibal, Eric ^{[2
]}

Desbrieres, Jacques ^{[3
]}

机构：

[1] Univ Estadual Campinas, Sch Chem Engn, BR-13083970 Campinas, SP, Brazil

[2] Ecole Mines Ales, Ctr Mat Mines Ales MPA BCI C2MA, F-30319 Ales, France

[3] Univ Pau & Pays Adour, Inst Sci Analyt & Physicochim Environm & Mat IPRE, F-64053 Pau, France

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 164卷

关键词：

Biosorption; Seaweed; Alginate-extraction; Chromium; XPS; HEAVY-METAL BIOSORPTION; HEXAVALENT CHROMIUM; TRIVALENT CHROMIUM; REMEDIATION; BIOMATERIAL; ADSORBENTS; SORPTION; REMOVAL; BINDING; CR(VI);

D O I：

10.1016/j.biortech.2014.04.103

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The alginate extraction products from Brazilian brown seaweed Sargassum filipendula were studied for chromium biosorption. Batch experiments were conducted at pH 2 and 3 and 20 degrees C to determine the sorption capacity of this biosorbents for chromium (VI) and (III). The biomass was characterized before and after metal binding by X-ray photoelectron spectroscopy (XPS) in order to determine the mechanisms of chromium biosorption. The residue has a high adsorption capacity, close the value obtained with seaweed and higher than that of alginate for both Cr(III) and Cr(VI). XPS analysis of the biosorbents revealed that carboxyl, amino and sulfonate groups are responsible for the binding of the metal ions. The analysis also indicated that the Cr(VI) bound to the biomass was reduced to Cr(III). (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：264 / 269

页数：6

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