Hybrid leaching of tantalum and other valuable metals from tantalum capacitor waste.
Bio-metallurgy
Circular economy
Critical metal
Hydrometallurgy
Recycling
WEEE
Journal
Environmental science and pollution research international
ISSN: 1614-7499
Titre abrégé: Environ Sci Pollut Res Int
Pays: Germany
ID NLM: 9441769
Informations de publication
Date de publication:
May 2023
May 2023
Historique:
received:
23
12
2022
accepted:
18
03
2023
medline:
10
5
2023
pubmed:
4
4
2023
entrez:
3
4
2023
Statut:
ppublish
Résumé
We propose a novel integrated model for the recovery of tantalum from tantalum-rich waste using a combination of hydrometallurgical and bio-metallurgical processes. To this end, leaching experiments with heterotrophs (Pseudomonas putida, Bacillus subtilis and Penicillium simplicissimum) were carried out. The heterotrophic fungal strain leached manganese with an efficiency of 98%; however, no tantalum was detected in the leachate. An unidentified species did mobilise 16% tantalum in 28 days in an experiment with non-sterile tantalum capacitor scrap. Attempts to cultivate isolate and identify these species failed. The results of a range of leaching trials resulted in an effective strategy for Ta recovery. A bulk sample of homogenised Ta capacitor scrap was first subjected to microbial leaching using Penicillium simplicissimum, which solubilised manganese and base metals. The residue was subjected to the second leach using 4 M HNO
Identifiants
pubmed: 37012563
doi: 10.1007/s11356-023-26592-3
pii: 10.1007/s11356-023-26592-3
doi:
Substances chimiques
Silver
3M4G523W1G
Manganese
42Z2K6ZL8P
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
59621-59631Subventions
Organisme : EU Life
ID : LIFE14 ENV/UK/000344
Informations de copyright
© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
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