Blast furnace residues for arsenic removal from mining-contaminated groundwater

被引：8

作者：

Carrillo-Pedroza, Fco Raul. ^{[1
]}

de Jesus Soria-Aguilar, Ma. ^{[1
]}

Martinez-Luevanos, Antonia. ^{[2
]}

Narvaez-Garcia, Victor ^{[3
]}

机构：

[1] Univ Autonoma Coahuila, Fac Met, Monclova 25710, Coah, Mexico

[2] Univ Autonoma Coahuila, Fac Ciencias Quim, Saltillo 25800, Coah, Mexico

[3] Altos Hornos Mexico, SAB, Monclova 25700, Coahuila, Mexico

来源：

ENVIRONMENTAL TECHNOLOGY | 2014年 / 35卷 / 23期

关键词：

arsenic; adsorption; BF residues; groundwater; treatment; IRON; ADSORPTION; WATER; MAGNETITE; SORPTION;

D O I：

10.1080/09593330.2014.925509

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 work, blast furnace (BF) residues were well characterized and then evaluated as an adsorbent material for arsenic removal from a mining-contaminated groundwater. The adsorption process was analysed using the theories of Freundlich and Langmuir. BF residues were found to be an effective sorbent for As (V) ions. The modelling of adsorption isotherms by empirical models shows that arsenate adsorption is fitted by the Langmuir model, suggesting a monolayer adsorption of arsenic onto adsorbents. Arsenate adsorption onto BF residue is explained by the charge density surface affinity and by the formation of Fe (II) and Fe (III) corrosion products onto BF residue particles. The results indicate that BF residues represent an attractive low-cost absorbent option for the removal of arsenic in wastewater treatment.

引用

页码：2895 / 2902

页数：8

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