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Copper extraction from scrap cables by biotechnological means
Gaydardzhiev, Stoyan; Bastin, David; Bareel, Pierre-François
2010In Proceedings of the XXV International Mineral Processing Congress
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Keywords :
copper scrap; bioleaching; metallic cables
Abstract :
[en] The papaer reports on laboratory results regarding bio leaching of metallic copper from cable-bearing scraps derived from recycling of end-of-life vehicles. The copper has been met in pure form as irregular shaped wires often coated with tin. The complex nature of the material renders both gravity and physicochemical separation unsuitable for efficient copper separation. Hence a bacterially assisted leaching with mixed consortium of mesophylic microorganisms has been tested for recevery of the remaining copper. Continuous adaptation of the cultures to the substrate has been envisaged in order to guarantee sufficient degree of ferric iron regeneration by bacteria during leaching. It has been established that under optimal leaching conditions such as acid consumption, pulp density, pH and temperature, it is possible to recover nearly 98 % of the copper in solution within acceptable leaching duration.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Gaydardzhiev, Stoyan  ;  Université de Liège - ULiège > Département Argenco : Secteur GeMMe > Traitement et recyclage des matières minérales
Bastin, David ;  Université de Liège - ULiège > Département Argenco : Secteur GeMMe > Génie minéral et recyclage
Bareel, Pierre-François
Language :
English
Title :
Copper extraction from scrap cables by biotechnological means
Publication date :
September 2010
Event name :
XXV International Mineral Processing Congress,
Event organizer :
The Australasian Institute of Mining and Metallurgy (AUSIMM)
Event place :
Brisbane, Australia
Event date :
6-10 September, 2010
Audience :
International
Main work title :
Proceedings of the XXV International Mineral Processing Congress
ISBN/EAN :
978 1 921522 28 4
Pages :
3751-3757
Peer reviewed :
Peer reviewed
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