Adsorción de metales pesados sobre cascarilla de laminación

F. A. López; M. I. Martín; C. Pérez; A. López-Delgado; F. J. Alguacil

doi:10.3989/revmetalm.2003.v39.i3.332

Heavy metals adsorption on rolling mill scale

Authors

F. A. López Departannento de Metalurgia Primaria y Reciclado de Materiales. Centro Nacional de Investigaciones Metalúrgicas (CENIM), CSIC
M. I. Martín Departannento de Metalurgia Primaria y Reciclado de Materiales. Centro Nacional de Investigaciones Metalúrgicas (CENIM), CSIC
C. Pérez Departannento de Metalurgia Primaria y Reciclado de Materiales. Centro Nacional de Investigaciones Metalúrgicas (CENIM), CSIC
A. López-Delgado Departannento de Metalurgia Primaria y Reciclado de Materiales. Centro Nacional de Investigaciones Metalúrgicas (CENIM), CSIC
F. J. Alguacil Departannento de Metalurgia Primaria y Reciclado de Materiales. Centro Nacional de Investigaciones Metalúrgicas (CENIM), CSIC

DOI:

https://doi.org/10.3989/revmetalm.2003.v39.i3.332

Keywords:

Rolling mill scale, Adsorption, Heavy metals, Adsorption isothems, Recovery

Abstract

A great quantity of industries are responsibles for contaminating the environment with the heavy metals which are containing in their wastewaters. The recovery of these metals is both from an environmental and economical points of view of the upmost interest. A study is made of the use of mill scale -originating in the hot rolling of steel- as an adsorbent for the removal of heavy metals from liquid effluents. The adsorption of Zn₊₂, Cd₊₂ y Pb₊₂ on the rolling mill scale was investigated by determination of adsorption isotherms. The effect of time, equilibrium temperature and concentration of metal solution on mill scale adsorption efficiency was evaluated. The adsorption process was analysed using the theories of Langmuir and Freundlich. Desorption process of metals from loaded mill scales was also studied using several desorbent at different experimental conditions. It has been proved that the mill scale is an effective adsorbent for the cations studied in aqueous solutions within the range of the working concentrations.

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Published

2003-06-30

How to Cite

López, F. A., Martín, M. I., Pérez, C., López-Delgado, A., & Alguacil, F. J. (2003). Heavy metals adsorption on rolling mill scale. Revista De Metalurgia, 39(3), 215–223. https://doi.org/10.3989/revmetalm.2003.v39.i3.332

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Issue

Vol. 39 No. 3 (2003)

Section

Technical Notes

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