How Raw and Gypsum Modified Bauxite Residues Affect Seed Germination, Enzyme Activities, and Root Development of Sinapis alba

Fourrier, Camille; Luglia, Mathieu; Keller, Catherine; Hennebert, Pierre; Foulon, Julie; Ambrosi, Jean-Paul; Angeletti, Bernard; Criquet, Stéven

doi:10.1007/s11270-021-05232-x

Cited by 7 publications

(5 citation statements)

References 52 publications

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“…In addition, the use of organic molecules produced by living organisms will also be explored. It includes highly selective organic molecules produced specifically to recover REEs by methylotroph bacteria such as lanmodulin − but also other molecules produced by plants, bacteria, or fungi than are known to dissolve phosphates and/or REEs in soil (siderophores, − formic acid, succinic acid, malic acid, amino acids...). ,,− In this regard a better knowledge of plants and microorganisms developing in BR deposits may be particularly informative for selecting appropriate bio-inspired extraction strategies. − …”

Section: Discussionmentioning

confidence: 99%

Potential of Ligand-Promoted Dissolution at Mild pH for the Selective Recovery of Rare Earth Elements in Bauxite Residues

Lallemand

Ambrosi

Borschneck

et al. 2022

ACS Sustainable Chem. Eng.

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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, bauxite residue contains critical elements including rare earth elements (REEs) (712mg/kg). We investigated the use of soft and selective dissolution protocols at mild pHs (2-6) as an alternative to pyroand 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 (LMWOAs) 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. SynopsisLigand-promoted dissolution, an interesting mechanism for the development of selective recovery processes of REEs from bauxite residue in mild pH conditions.

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Section: Discussionmentioning

confidence: 99%

Potential of Ligand-Promoted Dissolution at Mild pH for the Selective Recovery of Rare Earth Elements in Bauxite Residues

Lallemand

Ambrosi

Borschneck

et al. 2022

ACS Sustainable Chem. Eng.

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“…This work first focused on atmospheric particles from the storage site and their health and environmental impacts [Noack et al, 2012, Bonnefoy et al, 2017, Bley et al, 2019, Pourcelot et al, 2021. Further work was then carried out on the possibilities of revegetating the site to avoid dust emissions [Fourrier et al, 2020[Fourrier et al, , 2021 and on the opportunities for recycling the residues [Lallemand et al, 2022]. It also focused on the views of the site's neighbours and residents of Gardanne regarding the operation, development and future of the industrial site, opening up the prospect of more transparent management [Mainard and Rouchier, 2019].…”

Section: Focus On the Results Concerning Alumina And Slag Heapsmentioning

confidence: 99%

The Provence Coalfield: trajectory, assessment and prospective

Daviet,

Schleyer-Lindenmann,

Raynal

et al. 2023

Comptes Rendus. Géoscience

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The trajectory taken by the Provence Coalfield (or Bassin Minier de Provence), located between Aix-en-Provence and Marseille, is explained by its long mining history, disrupted by the closure of the mine in 2003. We approach this space from a global perspective, considering the social, economic and environmental dimensions of the socio-ecosystem. The conclusion puts forward scenarios for the evolution of the territory and the perspectives for research, underlining the growing role of the energy transition, especially in the context of the closure of the coal-fired power plant.

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“…Few studies have investigated the effect of lowering artificially pH and EC in the optic of bioremediation of BRDAs (Courtney et al, 2014;Jones et al, 2011;Wong and Ho, 1994). As a recent example, the recent study by Fourrier et al (2021) has reported the positive effect of gypsum addition and repeated washing on pH neutralization and EC decrease. In addition, fungal contribution to early-stage microbial assembly seems to be underrated and their role in bauxite residue remediation needs more research.…”

Section: Implications For Bioremediation and Metal Recoverymentioning

confidence: 98%

Contrasted microbial community colonization of a bauxite residue deposit marked by a complex geochemical context

Macías-Pérez

Levard

Barakat

et al. 2022

Journal of Hazardous Materials

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How Raw and Gypsum Modified Bauxite Residues Affect Seed Germination, Enzyme Activities, and Root Development of Sinapis alba

Cited by 7 publications

References 52 publications

Potential of Ligand-Promoted Dissolution at Mild pH for the Selective Recovery of Rare Earth Elements in Bauxite Residues

Potential of Ligand-Promoted Dissolution at Mild pH for the Selective Recovery of Rare Earth Elements in Bauxite Residues

The Provence Coalfield: trajectory, assessment and prospective

Contrasted microbial community colonization of a bauxite residue deposit marked by a complex geochemical context

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