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Bioleaching to reprocess sulfidic polymetallic mining residues: Two case studies from the H2020 NEMO project

Abstract : In Europe, most of metallic high- or moderate-grade primary sources that are reasonably accessible and easy to process are exhausted. In today's context of resource scarcity, complex low-grade ores and extractive wastes are receiving increasing attention. In particular, mining waste may be evaluated as a metal resource while their reprocessing might mitigate environmental impacts related to mining waste disposal [1]. Many efforts are being made to develop recycling or reuse options at reduced costs, with low environmental impacts and economic benefits. Conventional processes and technologies are often not profitable, sometimes due to the complexity of composition [2]. In this context, bio-hydrometallurgy, i.e. the use of microorganisms in hydrometallurgical operations, is increasingly being recognised as an ecologically acceptable and yet economic alternative for the recovery of metals in low-grade sulfide materials. The European research project NEMO (Near-zerowaste recycling of low-grade sulfidic mining waste for critical-metal, mineral and construction rawmaterial production in a circular economy) aims to valorise sulfidic mine waste by combining innovative hydrometallurgical processes for the recovery of valuable metals and critical raw materials with the transformation of the residue in clean mineral to be used for mass production of cement, concrete and construction products [3]. In the framework of this project, this study focuses on the development of enhanced bioleaching methods (i.e. the dissolution of metals catalysed by microorganisms) on two mining residues from Sotkamo mine (Terrafame, Finland) and Aïtik mine (Boliden, Sweden).
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Contributeur : Agathe HUBAU Connectez-vous pour contacter le contributeur
Soumis le : vendredi 4 février 2022 - 15:38:27
Dernière modification le : mardi 2 août 2022 - 16:15:37


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  • HAL Id : hal-03557864, version 1



Agathe Hubau, Douglas O. Pino-Herrera, Anne-Gwenaëlle G Guezennec. Bioleaching to reprocess sulfidic polymetallic mining residues: Two case studies from the H2020 NEMO project. WasteEng2022 - 9th International Conference on Engineering for Waste and Biomass Valorisation,, Jun 2022, Copenhagen, Denmark. ⟨hal-03557864⟩



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