TY - JOUR
T1 - Adsorption phenomena in hydrometallurgy, 3. Model for copper, nickel and cobalt uptake by oxide adsorbents in aqueous ammoniacal solutions
AU - Osseo-Asare, K.
AU - Fuerstenau, D. W.
N1 - Funding Information:
The authors wish to acknowledge the National Science Foundation for support of this research and the Jane Lewis Fellowship program of the University of California for a fellowship during part of the graduate program of K. Osseo-Asare.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1980
Y1 - 1980
N2 - The uptake of hydrolyzable metal ions by oxide adsorbents in aqueous ammoniacal solutions has been interpreted in terms of a mechanism involving the competitive adsorption of all the aqueous species. An adsorption model is presented which combines double layer theory with properties of the substrate (pzc, dielectric constant), the solvent medium (dielectric constant) and the aqueous ionic species (stability constants). It is proposed that specific effects due to the presence of hydroxyl groups in an aqueous complex and solvation effects due to the dielectric constant of the substrate play a dominant role in the up-take of metal by oxide colloids in aqueous ammoniacal solutions.
AB - The uptake of hydrolyzable metal ions by oxide adsorbents in aqueous ammoniacal solutions has been interpreted in terms of a mechanism involving the competitive adsorption of all the aqueous species. An adsorption model is presented which combines double layer theory with properties of the substrate (pzc, dielectric constant), the solvent medium (dielectric constant) and the aqueous ionic species (stability constants). It is proposed that specific effects due to the presence of hydroxyl groups in an aqueous complex and solvation effects due to the dielectric constant of the substrate play a dominant role in the up-take of metal by oxide colloids in aqueous ammoniacal solutions.
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U2 - 10.1016/0301-7516(80)90018-6
DO - 10.1016/0301-7516(80)90018-6
M3 - Article
AN - SCOPUS:0019068506
SN - 0301-7516
VL - 7
SP - 219
EP - 234
JO - International Journal of Mineral Processing
JF - International Journal of Mineral Processing
IS - 3
ER -