Adsorción de metales pesados sobre lodos de horno alto

A. López-Delgado; C. Pérez; F. A. López

doi:10.3989/revmetalm.1998.v34.iExtra.731

Heavy metals adsorption on blast furnace sludge

Authors

A. López-Delgado Centro Nacional de Investigaciones Metalúrgicas, CENIM (CSIC)
C. Pérez Centro Nacional de Investigaciones Metalúrgicas, CENIM (CSIC)
F. A. López Centro Nacional de Investigaciones Metalúrgicas, CENIM (CSIC)

DOI:

https://doi.org/10.3989/revmetalm.1998.v34.iExtra.731

Keywords:

Blast furnace sludge, Adsorption, Heavy metals, Wastes, Recovery

Abstract

Most of industrial liquid effluents have high contents of heavy metals. The recovery of these metals is environmental and economically interesting. In this work we study the use of sludge, a by-product of the steel industry, as an adsorbent for the removal of heavy metals from liquid effluents. The adsorption of Pb²⁺, Zn²⁺, Cd²⁺, Cu²⁺ and Cr³⁺ on the sludge was investigated by determination of adsorption isotherms. The effect of time, equilibrium temperature and concentration of metal solution on sludge adsorption efficiency was evaluated. The adsorption process was analysed using the theories of Freundlich and Langmuir and the thermodynamic values ΔG, ΔH and ΔS corresponding to each adsorption process were calculated. Blast furnace sludge was found to be an effective sorbent for Pb, Zn, Cd, Cu and Cr-ions within the range of ion concentrations employed.

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Published

1998-05-30

How to Cite

López-Delgado, A., Pérez, C., & López, F. A. (1998). Heavy metals adsorption on blast furnace sludge. Revista De Metalurgia, 34(Extra), 164–168. https://doi.org/10.3989/revmetalm.1998.v34.iExtra.731

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Issue

Vol. 34 No. Extra (1998)

Section

Articles

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