publication . Article . 2015

copper leaching from waste electric cables by biohydrometallurgy

Fanny Lambert; Stoyan Gaydardzhiev; Grégoire Léonard; Gregory Lewis; Pierre-François Bareel; David Bastin;
Open Access
  • Published: 13 Jan 2015 Journal: Minerals Engineering, volume 76, pages 38-46 (issn: 0892-6875, Copyright policy)
  • Publisher: Elsevier BV
  • Country: Belgium
Abstract
Abstract This study examines the leaching of copper from waste electric cables by chemical leaching and leaching catalysed by Acidithiobacillus ferrooxidans in terms of leaching kinetics and reagents consumption. Operational parameters such as the nature of the oxidant (Fe 3+ , O 2 ), the initial ferric iron concentration (0–10 g/L) and the temperature (21–50 °C) were identified to have an important influence on the degree of copper solubilisation. At optimal process conditions, copper extraction above 90% was achieved in both leaching systems, with a leaching duration of 1 day. The bacterial leaching system slightly outperformed the chemical one but the positiv...
Subjects
free text keywords: Recycling, electric cables, leaching, Acidithiobacillus ferrooxidans, : Geological, petroleum & mining engineering [Engineering, computing & technology], : Géologie, ingénierie du pétrole & des mines [Ingénierie, informatique & technologie], Biohydrometallurgy, Kinetics, Reagent, Bioleaching, Metallurgy, Copper, chemistry.chemical_element, chemistry, Leaching (agriculture), Copper extraction techniques, Leaching (pedology)
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