Role of indigenous microbial communities in the mobilization of potentially toxic elements and rare-earth elements from alkaline mine waste
Copyright © 2024 Elsevier B.V. All rights reserved..
This study aims to evaluate the role of indigenous microorganisms in the mobilization of potentially toxic elements (PTE) and rare-earth elements (REE), the influence of the bioavailability of carbon sources that might boost microbial leaching, and the generation of neutral/alkaline mine drainage from alkaline tailings. These tailings, with significant concentrations of total organic carbon (TOC), were mainly colonized by bacteria belonging to the genera Sphingomonas, Novosphingobium and Solirubrobacter, and fungi of the genera Alternaria, Sarocladium and Aspergillus. Functionality analysis suggests the capability of these microorganisms to leach PTE and REE. Bio-/leaching tests confirmed the generation of neutral mine drainage, the influence of organic substrate, and the leaching of higher concentrations of PTE and REE due to the production of organic acids and siderophores by indigenous microorganisms. In addition, this study offers some insights into a sustainable alternative for reprocessing PMC alkaline tailings to recover REE.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:466 |
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| Enthalten in: |
Journal of hazardous materials - 466(2024) vom: 15. Feb., Seite 133504 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Cebekhulu, S [VerfasserIn] |
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| Links: |
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| Themen: |
7440-44-0 |
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| Anmerkungen: |
Date Completed 14.02.2024 Date Revised 14.02.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.jhazmat.2024.133504 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Copyright © 2024 Elsevier B.V. All rights reserved. | ||
| 520 | |a This study aims to evaluate the role of indigenous microorganisms in the mobilization of potentially toxic elements (PTE) and rare-earth elements (REE), the influence of the bioavailability of carbon sources that might boost microbial leaching, and the generation of neutral/alkaline mine drainage from alkaline tailings. These tailings, with significant concentrations of total organic carbon (TOC), were mainly colonized by bacteria belonging to the genera Sphingomonas, Novosphingobium and Solirubrobacter, and fungi of the genera Alternaria, Sarocladium and Aspergillus. Functionality analysis suggests the capability of these microorganisms to leach PTE and REE. Bio-/leaching tests confirmed the generation of neutral mine drainage, the influence of organic substrate, and the leaching of higher concentrations of PTE and REE due to the production of organic acids and siderophores by indigenous microorganisms. In addition, this study offers some insights into a sustainable alternative for reprocessing PMC alkaline tailings to recover REE | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Alkaline mine tailings | |
| 650 | 4 | |a Indigenous microorganisms | |
| 650 | 4 | |a Metal mobility | |
| 650 | 4 | |a Organic acids | |
| 650 | 4 | |a Siderophores | |
| 650 | 4 | |a Total organic carbon | |
| 650 | 7 | |a Metals, Rare Earth |2 NLM | |
| 650 | 7 | |a Carbon |2 NLM | |
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| 700 | 1 | |a Matu, A |e verfasserin |4 aut | |
| 700 | 1 | |a Alom, J |e verfasserin |4 aut | |
| 700 | 1 | |a Valverde, A |e verfasserin |4 aut | |
| 700 | 1 | |a Caraballo, M A |e verfasserin |4 aut | |
| 700 | 1 | |a Ololade, O |e verfasserin |4 aut | |
| 700 | 1 | |a Schneider, P |e verfasserin |4 aut | |
| 700 | 1 | |a Castillo, J |e verfasserin |4 aut | |
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