Adsorption of heavy metals from aqueous solutions with by‐products of the steelmaking industry

descriptionPublicationkeyboard_double_arrow_right Article 22 Apr 2005 English Publisher:WileyJournal:Journal of Chemical Technology & Biotechnology, volume 80, pages 1,223-1,229 (issn: 0268-2575, eissn: 1097-4660,

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Authors: Martín, M. I.; López Gómez, Félix Antonio; Pérez, Carlos; López-Delgado, Aurora; Alguacil, Francisco José;

doi: 10.1002/jctb.1305

handle: 10261/44862

Adsorption of heavy metals from aqueous solutions with by‐products of the steelmaking industry

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Abstract

AbstractThis paper describes the use of two steelmaking industry by‐products (rolling mill scale and blast furnace sludge) as adsorbents for removing heavy metals from aqueous effluent solutions. The adsorption of Pb2+, Zn2+ and Cd2+ on these materials has been studied by the determination of adsorption isotherms from solutions of controlled ionic strength. The effect of time, equilibrium temperature and metal solution concentration on adsorption efficiency was evaluated. The adsorption processes are analysed using the Langmuir theory. Desorption and dumping processes for the metals from loaded steelmaking industry by‐products were also studied under different experimental conditions. The by‐products were shown to be effective adsorbents for the studied cations in aqueous solutions within the range of working concentrations. Copyright © 2005 Society of Chemical Industry

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Keywords

Heavy metals, Adsorption isotherms, Effluent treatment, Rolling mill scale, Adsorption, Blast furnace sludge

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