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Closed Access item Recovery of chromium(VI) from hydrochloric acid liquors using the resin Dowex 1x8

Authors:Alguacil, Francisco José
Gómez Coedo, Aurora
Dorado López, María Teresa
Padilla, Isabel
Keywords:Chromium (VI), Dowex 1x8 resin, Hydrochloric acid
Issue Date:Mar-2002
Publisher:Science Reviews Limited
Citation:Journal of Chemical Research (3) : 101-104 (2002)
Abstract: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.
Publisher version (URL):http://dx.doi.org/10.3184/030823402103171465
Appears in Collections:(CENIM) Artículos

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