Study of Microbial Cultures for the Bioleaching of Scandium from Alumina Industry By-Products

Kiskira, Kyriaki; Lymperopoulou, Theopisti; Tsakanika, Lamprini-Areti; Pavlopoulos, Charalampos; Παπαδοπούλου, Κωνσταντίνα; Ochsenkühn, Klaus‐Michael; Lyberatos, Gérasimos; Ochsenkühn-Petropoulou, Maria

doi:10.3390/met11060951

Cited by 22 publications

(10 citation statements)

References 35 publications

(64 reference statements)

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“…Bioleaching was investigated by Kiskira et al [ 143 ] as a new and environmentally compatible method for scandium extraction from RM. Different parameters were studied using different microbial cultures on Greek RM.…”

Section: Recovery Of Scandium From the Bauxite Waste (Red Mud)mentioning

confidence: 99%

Scandium Recovery Methods from Mining, Metallurgical Extractive Industries, and Industrial Wastes

et al. 2022

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The recovery of scandium (Sc) from wastes and various resources using solvent extraction (SX) was discussed in detail. Moreover, the metallurgical extractive procedures for Sc recovery were presented. Acidic and neutral organophosphorus (OPCs) extractants are the most extensively used in industrial activities, considering that they provide the highest extraction efficiency of any of the valuable components. Due to the chemical and physical similarities of the rare earth metals, the separation and purification processes of Sc are difficult tasks. Sc has also been extracted from acidic solutions using carboxylic acids, amines, and acidic β-diketone, among other solvents and chemicals. For improving the extraction efficiencies, the development of mixed extractants or synergistic systems for the SX of Sc has been carried out in recent years. Different operational parameters play an important role in the extraction process, such as the type of the aqueous phase and its acidity, the aqueous (A) to organic (O) and solid (S) to liquid (L) phase ratios, as well as the type of the diluents. Sc recovery is now implemented in industrial production using a combination of hydrometallurgical and pyrometallurgical techniques, such as ore pre-treatment, leaching, SX, precipitation, and calcination. The hydrometallurgical methods (acid leaching and SX) were effective for Sc recovery. Furthermore, the OPCs bis(2-ethylhexyl) phosphoric acid (D2EHPA/P204) and tributyl phosphate (TBP) showed interesting potential taking into consideration some co-extracted metals such as Fe(III) and Ti(IV).

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Section: Recovery Of Scandium From the Bauxite Waste (Red Mud)mentioning

confidence: 99%

Scandium Recovery Methods from Mining, Metallurgical Extractive Industries, and Industrial Wastes

et al. 2022

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“…Penicillium tricolor RM-10 Mainly Sc (~57%) [27] Acetobacter sp. Lu (53%), Y (61%), Sc (52%) [28] Acetobacter tropicalis Sc (42%) [29] Cracking catalysts…”

Section: Biorecovery Of Rees From Industrial and Electronic Wastementioning

confidence: 99%

“…Recently, Kiskira et al [29] investigated the bioleaching of red mud using different microbial cultures and solid-to-liquid ratios. The maximum extraction yield of Sc was 42% using Acetobacter tropicalis in a one-step bioleaching process at 1% pulp density.…”

Section: Red Mudmentioning

confidence: 99%

Biohydrometallurgy for Rare Earth Elements Recovery from Industrial Wastes

et al. 2021

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Biohydrometallurgy recovers metals through microbially mediated processes and has been traditionally applied for the extraction of base metals from low-grade sulfidic ores. New investigations explore its potential for other types of critical resources, such as rare earth elements. In recent times, the interest in rare earth elements (REEs) is growing due to of their applications in novel technologies and green economy. The use of biohydrometallurgy for extracting resources from waste streams is also gaining attention to support innovative mining and promote a circular economy. The increase in wastes containing REEs turns them into a valuable alternative source. Most REE ores and industrial residues do not contain sulfides, and bioleaching processes use autotrophic or heterotrophic microorganisms to generate acids that dissolve the metals. This review gathers information towards the recycling of REE-bearing wastes (fluorescent lamp powder, spent cracking catalysts, e-wastes, etc.) using a more sustainable and environmentally friendly technology that reduces the impact on the environment.

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“…Out of all these techniques, bioleaching and microbial electrochemistry are among the most-studied methods (Dominguez-Benetton et al, 2018;Srichandan et al, 2019). In bauxite residues, these techniques are still at an early experimentation stage, although some promising results for REE recovery by bioleaching have been reported (Kiskira et al, 2021;Qu et al, 2019;Zhang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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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Study of Microbial Cultures for the Bioleaching of Scandium from Alumina Industry By-Products

Cited by 22 publications

References 35 publications

Scandium Recovery Methods from Mining, Metallurgical Extractive Industries, and Industrial Wastes

Scandium Recovery Methods from Mining, Metallurgical Extractive Industries, and Industrial Wastes

Biohydrometallurgy for Rare Earth Elements Recovery from Industrial Wastes

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

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