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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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| Kononenko, Denys |
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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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| Šuljagić, Marija |
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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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Chaurand, Perrine
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2022Potential of Ligand-Promoted Dissolution at Mild pH for the Selective Recovery of Rare Earth Elements in Bauxite Residuescitations
- 2022Potential of ligand-promoted dissolution at mild pH for the selective recovery of rare earth elements in bauxite residuecitations
- 2020Exploring the Link between Cd Isotopes and Speciation in Plants: A Case Study in Solanum Species
- 2019Mechanisms limiting the release of TiO 2 nanomaterials during photocatalytic cement alteration: the role of surface charge and porous network morphology
- 2019Mechanisms limiting the release of TiO 2 nanomaterials during photocatalytic cement alteration: the role of surface charge and porous network morphology
- 2018Non-linear release dynamics for a CeO2 nanomaterial embedded in a protective wood stain, due to matrix photo-degradationcitations
- 2017Nanoscale Coloristic Pigments: Upper Limits on Releases from Pigmented Plastic during Environmental Aging, In Food Contact, and by Leachingcitations
- 2017Nanoscale Coloristic Pigments: Upper Limits on Releases from Pigmented Plastic during Environmental Aging, In Food Contact, and by Leachingcitations
- 2017Nanoscale Coloristic Pigments: Upper Limits on Releases from Pigmented Plastic during Environmental Aging, In Food Contact, and by Leachingcitations
- 2014Insight into mechanisms leading to the release of ceo2 nanoparticles embedded in an acrylic wood coating
- 2014Insight into mechanisms leading to the release of ceo2 nanoparticles embedded in an acrylic wood coating
- 2011Ecotoxicological effects of an aged TiO2 nanocomposite measured as apoptosis in the anecic earthworm Lumbricus terrestris after exposure through water, food and soilcitations
- 2010Phosphorus speciation in dicalcium silicate polymorphs of basic oxygen furnace (BOF) slag - Preliminary resultscitations
- 2009Environmental assessment of a BOF steel slag used in road construction : The ECLAIR research programcitations
- 2009Physical-chemical characterization and ecotoxicity of residues from alteration of engineered nanomaterials
- 2006From cristalochemistry analysis and chromium and vanadium speciation to the modeling of the alteration of Basic Oxygen Furnace (BOF) steel slag
Places of action
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article
Potential of ligand-promoted dissolution at mild pH for the selective recovery of rare earth elements in bauxite residue
Abstract
International audience ; In a context of overexploitation of natural resources, a circular economy and particularly the extraction of resources from secondary sources are essential to sustain a number of key technologies including renewable energies. Among secondary sources, the bauxite residue contains critical elements including rare earth elements (REEs) (712 mg/kg). We investigated the use of soft and selective dissolution protocols at mild pH values (2–6) as an alternative to pyro- and hydrometallurgy for the recovery of REEs through ligand-promoted dissolution. This approach depends on the detailed characterization of the waste and the speciation of targeted elements. We assessed dissolution using low-molecular-weight organic acids and their conjugate bases. Citric acid/citrate showed satisfactory dissolution of REEs (up to 50% of light REEs) up to a pH of nearly 5, while tartaric acid/tartrate showed the best dissolution selectivity (enrichment factor up to 21.5 compared to Fe, Al, and Ti). Almost no heavy REEs were dissolved in any of the conditions tested, probably due to the high chemical stability of their bearing phases. Indeed, heavy REEs were found as discrete phosphate particles