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Application of diffusion dialysis for reduction of acidity of real pregnant leach solutions containing Ni and Co ions

Abstract: Diffusion dialysis (DD) was proposed as a pretreatment step to reduce the acidity of real sulfate/chloride pregnant leach solutions containing cobalt(II) and nickel(II). Optimum DD conditions that enable reduction of acidity in the feed while maintaining a high rejection level of metal ions present in PLS were proposed, e.g. for 0.06 dm3/min flow of both aqueous phases H+ concentration in the dialysate reached 3.8 and 2.99 M for PLS1 and PLS2, respectively. Acid diffusion coefficients varied from 0.32.10-6 to 3.15.10-6 m/s and decreased with increasing phase flow rates. Moreover, dialysate neutralization was beneficial for the H+ reduction in the feed.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Janiszewska M., Arguillarena A., Wajs M., Staszak K., Regel-Rosocka M.,

 Fuente: Separation Science and Technology, 2020, 55(12), 2227-2237

Editorial: Taylor and Francis Inc.

 Fecha de publicación: 04/07/2020

Nº de páginas: 11

Tipo de publicación: Artículo de Revista

 DOI: 10.1080/01496395.2019.1634102

ISSN: 0149-6395,1520-5754

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