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Adsorption of copper(II) by pyrite in acidic to neutral pH media
Luleå University of Technology.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
Luleå University of Technology.
1989 (English)In: Scandinavian journal of metallurgy, ISSN 0371-0459, E-ISSN 1600-0692, Vol. 18, no 6, p. 262-270Article in journal (Refereed) Published
Abstract [en]

It is shown that no iron is liberated from the pyrite during the adsorption of Cu(II) by pyrite. The mass of Cu(II) removed by pyrite in an acidic neutral proceeds at an exceedingly slow rate. In the presence of iron-complexing agents, the removal of Cu(II) by pyrite in the initial step is very rapid, but then follows the same relationship exhibited in the absence of such complexing agents. The rate of Cu(II) adsorption depends on the solution pH and the Cu(II) concentration in solution. The adsorption rate increases with an increase in the solution pH. The influence of oxygen on the adsorption of Cu(II) by the pyrite is critical. In solutions with lower pH, copper initially adsorbed on pyrite surface undergoes desorption from the surface upon prolonged reaction with oxygen. The possible mechanism involved in the processes and the practical implications of the findings are discussed.

Place, publisher, year, edition, pages
1989. Vol. 18, no 6, p. 262-270
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-5846Local ID: 407bb520-b1f3-11db-bf9d-000ea68e967bOAI: oai:DiVA.org:ltu-5846DiVA, id: diva2:978722
Note
Godkänd; 1989; 20070201 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Forssberg, Eric

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