Effect of Impurities in Precious Metal Recovery by Electrodeposition-Redox Replacement Method from Industrial Side-Streams and Process Streams

Yliniemi, Kirsi; Wang, Zulin; Korolev, Ivan; Hannula, Pyry-Mikko; Halli, Petteri; Lundström, Mari

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Effect of Impurities in Precious Metal Recovery by Electrodeposition-Redox Replacement Method from Industrial Side-Streams and Process Streams

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Title:	Effect of Impurities in Precious Metal Recovery by Electrodeposition-Redox Replacement Method from Industrial Side-Streams and Process Streams
Author(s):	Yliniemi, Kirsi ; Wang, Zulin ; Korolev, Ivan ; Hannula, Pyry-Mikko ; Halli, Petteri ; Lundström, Mari
Date:	2018-05
Language:	en
Pages:	9 59-67
Department:	Department of Chemistry and Materials Science Department of Chemical and Metallurgical Engineering Hydrometallurgy and Corrosion
ISBN:	9781607685395
Series:	ECS Transactions, Volume 85, issue 4, ECS TRANSACTIONS
ISSN:	1938-5862
DOI-number:	10.1149/08504.0059ecst
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Citation: Yliniemi , K , Wang , Z , Korolev , I , Hannula , P-M , Halli , P & Lundström , M 2018 , Effect of Impurities in Precious Metal Recovery by Electrodeposition-Redox Replacement Method from Industrial Side-Streams and Process Streams . in ECS Transactions . 4 edn , vol. 85 , ECS TRANSACTIONS , Electrochemical Society , pp. 59-67 , Electrochemical Society Meeting , Seattle , Washington , United States , 13/05/2018 . https://doi.org/10.1149/08504.0059ecst
Abstract: The recovery of precious metals (Ag and Au) by electrodeposition-redox replacement (EDRR) method was studied in three different solutions: sulfate based Zn-Fe-Ag solution, chloride based Cu-Fe-Au solution and industrial multi-metal chloride solution. The common factor to these solutions is that the base (Zn or Cu) metal is present in g/L scale while the precious metal is present in ppm or lower level. The results showed that the presence of impurity Fe (in g/L scale) decreases the recovery efficiency of precious metals but at the same time, it may lead to selective dissolution of the base metal, resulting in the higher purity of the precious metal deposit. Moreover, a successful deposition of Au on carbon nanotube (CNT) films from industrial multi-metal solution was demonstrated.

Description: \| openaire: EC/H2020/721385/EU//SOCRATES
Permanent link to this item: http://urn.fi/URN:NBN:fi:aalto-201809064978 Email this Export to RefWorks QR Code Print BibTex Tweet