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Exploring relationships between various activations of granular activated carbon on silver and gold adsorption: A kinetic and equilibrium study
Department of Research & Development, Faravari Pouya Zarcan Agh-Darreh Company, Tehran, Iran.
Department of Research & Development, Faravari Pouya Zarcan Agh-Darreh Company, Tehran, Iran.
School of Mining, College of Engineering, University of Tehran, Tehran, Iran.
Department of mineral processing engineering, Faculty of mining engineering, University of Amirkabir, Tehran, Iran.
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2019 (English)In: Separation science and technology (Print), ISSN 0149-6395, E-ISSN 1520-5754, Vol. 54, no 11, p. 1710-1721Article in journal (Refereed) Published
Abstract [en]

This investigation examined various kinetic and equilibrium models for gold (Au) and silver (Ag) adsorption from cyanide leach solution, onto surface of granular activated carbon (GAC) with 10, 35, 70 and 100% activities. Results indicated that the initial rate for Au and Ag adsorption is similar and increases by increasing the GAC activities. Outcomes showed that the adsorption for low activity GAC is proportional to the number of adsorption sites while the rate-limiting can be chemisorption for GAC with high activity. Thus, even low amount of contaminations on the fresh GAC can significantly decrease the capacity of precious metals adsorption.

Place, publisher, year, edition, pages
Taylor & Francis, 2019. Vol. 54, no 11, p. 1710-1721
Keywords [en]
Activated carbon, activation, equilibrium, kinetic, precious metals
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-71719DOI: 10.1080/01496395.2018.1540635ISI: 000470885100002Scopus ID: 2-s2.0-85055706559OAI: oai:DiVA.org:ltu-71719DiVA, id: diva2:1265229
Note

Validerad;2019;Nivå 2;2019-06-26 (johcin)

Available from: 2018-11-22 Created: 2018-11-22 Last updated: 2019-06-26Bibliographically approved

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Chelgani, Saeed Chehreh

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