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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Pino-Herrera, Douglas O.
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document
Pilot-scale demonstrations of innovative biohydrometallurgy for sustainable valorisation of mining waste: main outcomes from H2020-NEMO project
Abstract
In the frame of the European project H2020-NEMO (Near-zero-waste recycling of low-grade sulphidic mining waste for critical-metal, mineral and construction raw-material production in a circular economy), (bio)hydrometallurgical processing routes were developed to remove sulphides from tailings while residual valuable metals and minerals were recovered. Two case-studies were considered: low-S tailings from Sotkamo mine and high-S tailings from Luikonlahti mine. The core technology was the heap bioleaching for Sotkamo and bioleaching in stirred tank reactors for Luikonlahti, and both of them were compared to the pond bioleaching option. Several downstream processes were then applied to the bioleachate for the recovery and separation of Zn, Ni, Cu, Co, REE, Mn, K and Mg. All the (bio)hydrometallurgical processes developed within NEMO were demonstrated up to TRL 7-8 in variouspilot scales, which provides a relevant technological portfolio for tailings valorization and reduction of long-term environmental impacts.