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BIBTEX RIS

Stabilization of a Chromium-Containing Solid Waste: Immobilization of Hexavalent Chromium

1998; Taylor & Francis; Volume: 48; Issue: 11 Linguagem: Inglês

10.1080/10473289.1998.10463765

ISSN

2162-2906

Autores

M. Rodrfguez-Piñero, Constantino Fernández‐Pereira, C. Ruiz de Elvira Francoy, J. F. Vale Parapar,

Tópico(s)

Chromium effects and bioremediation

Resumo

This article describes the stabilization/solidification (S/S) of a steel industry waste, using a common type-F fly ash from a coal power station as the main binder. The waste, which contains hazardous levels of metals, may be stabilized by a conventional S/S to achieve permissible Pb, Cd, and Zn concentrations in the Toxicity Characteristic Leaching Procedure (TCLP) leachates of S/S solids. On the other hand, the stabilization of Cr(VI), also present in the waste, requires a reducing pretreatment stage with ferrous sulfate to attain TCLP leachates within limits. A bibliographic study on the stabilization of Cr(VI)-containing wastes is included in the paper, along with a discussion on the lowest Cr concentration in TCLP and aqueous (DIN) leachates.

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