Remoción de cromo de aguas residuales de curtiembre utilizando ceniza volante
DOI:
https://doi.org/10.17533/udea.redin.325757Keywords:
Flying ash, tannery waste waters, chromium, zeolites.Abstract
Se presenta un método simple y económico para la remoción de cromo de aguas residuales de la industria de curtiembres utilizando ceniza volante. La operación de remoción de cromo se lleva a cabo en forma discontinua utilizando como variables la masa de ceniza volante, el tiempo de contacto y la temperatura o el pH, las cuales se optimizan mediante un diseño de experimentos, de Box-Wilson. Los resultados fueron exitosos y pudo pasarse de una concentración inicial de cromo de 1850 ppm a concentraciones finales de 0.008 ppm y 0.5 ppm para Cr'+3 y Cr'+6, respectivamente, cumpliendo con las exigencias gubernamentales sobre este tipo de desechos.Downloads
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