| People | Locations | Statistics |
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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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Borschneck, Daniel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 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
- 2021Silica-clay nanocomposites for the removal of antibiotics in the water usage cyclecitations
- 2019Mechanisms limiting the release of TiO 2 nanomaterials during photocatalytic cement alteration: the role of surface charge and porous network morphology
- 2018Thulium-doped nanoparticles and their properties in silica-based optical fiberscitations
- 2018The effect of surface modification of microfibrillated cellulose (MFC) by acid chlorides on the structural and thermomechanical properties of biopolyamide 4.10 nanocomposites
- 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
- 2014Constraints from sulfur isotopes on the origin of gypsum at concrete/claystone interfacescitations
- 2014Insight into mechanisms leading to the release of ceo2 nanoparticles embedded in an acrylic wood coating
- 2011TiO2-based nanoparticles released in water from commercialized sunscreens in a life-cycle perspective: Structures and quantitiescitations
- 2010Aging of TiO2 nanocomposites used in sunscreen. Dispersion and fate of the degradation products in aqueous environmentcitations
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