5. Conclusion and outlook

The development of renewable energies, sustainable mobility and consumer goods such as high-tech and digital products, linked to demographic growth, is accompanied by a significant increase in the need for mineral and metal resources. In the context of the current energy and digital transitions, certain essential metals will become all the more critical. Faced with problems linked to the availability of raw materials, the geopolitical instability of some of their producer countries, or their oligopolistic positions, recycling the metals contained in electrical and electronic waste can provide some solutions.

Numerous processes are available, some of which have been put into practice to exploit this urban mine. Recycling is already practiced for metals such as Pt, Rh, Ru and Pd, mainly from catalytic converters, Ga and In, from manufacturing offcuts, and Ta and Ag....

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Bibliography

(1) - COLLINS (T.), HAGMANN (M.) - Une initiative de l'ONU en faveur de l'amélioration du recyclage des déchets électroniques. - EMPA (2007). https://www.empa.ch/documents/56164/296590/a592-2007-03-07-fr-01+MM-ewaste.pdf

Regulations

Articles R543-172 modified by decree no. 2021-1213 of September 22, 2021 – art. 1, and R543-173 modified by decree no. 2020-1725 of December 29, 2020 – art. 4, section 10 of the Environment Code concerning electrical and electronic equipment.

Patents

Process for extracting and recovering gold and/or one or more platinoids present in an acidic aqueous phase S69999 FR DEL-P, January 23, 2020.

Methods for extracting and recovering tantalum present in an acidic aqueous phase by means of an ionic liquid, and use of such an ionic liquid to extract tantalum, FR3040060, February 17, 2017.