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Título : Recovery of chromium(VI) from hydrochloric acid liquors using the resin Dowex 1x8
Autor : Alguacil, Francisco José, Gómez Coedo, Aurora, Dorado López, María Teresa, Padilla, Isabel
Palabras clave : Chromium (VI)
Dowex 1x8 resin
Hydrochloric acid
Fecha de publicación : Mar-2002
Editor: Science Reviews Limited
Resumen: The adsorption of chromium(VI) on the Dowex 1x8 resin has been studied. The influence of several variables such as the temperature, the hydrochloric acid and metal concentrations in the aqueous phase and the variation of the amount of resin added has been investigated. Various aqueous solutions were used for the elution of the metal. Although concentrated nitric acid elutes chromium, this can be best accomplished using hydrazine sulfate solutions which at the same time reduce the toxic Cr(VI) to the less toxic trivalent chromium state. Results obtained from batch experiments were applied to a continuous system using vertical columns. Furthermore, the methodology was transferred to an on-line flow injection system.
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ISSN: 1747-5198
Citación : Journal of Chemical Research (3) : 101-104 (2002)
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