Enrichment of rare earth elements from contaminated biomass prior to extraction

Dinh Truong and Dobó Zsolt and Kovács Helga: Enrichment of rare earth elements from contaminated biomass prior to extraction. In: Analecta technica Szegedinensia, (16) 1. pp. 77-82. (2022)

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Abstract

Under the context of reserve depletion, recovering rare earth elements (REEs) from secondary resources is essential which assists to strengthen the circular economy. Contaminated biomass growing from brownfield lands is a potential material for REE recovery. However, prior to the extraction stage, polluted plants need to be lessened to a manageable volume. In this study, contaminated biomass gathered from an abandoned mining area was combusted in a pilot-scale boiler, while solid residuals from different positions in the burning system were collected and analyzed. Higher REE concentration in the ash samples compared to that in the woody biomass indicates the efficiency of the combustion process from the metal enrichment point of view. The significant metal concentration in the solid remains is an advantage for the following step of extraction to reclaim REEs. It was concluded that the concentration of REEs in bottom ash is greater than in the other solid residuals. That indicates that the volatility of rare earth minerals is limited during biomass incineration.

Item Type: Article
Journal or Publication Title: Analecta technica Szegedinensia
Date: 2022
Volume: 16
Number: 1
ISSN: 2064-7964
Page Range: pp. 77-82
Language: English
Publisher: University of Szeged, Faculty of Engineering
Place of Publication: Szeged
Related URLs: https://acta.bibl.u-szeged.hu/77815/
DOI: 10.14232/analecta.2022.1.77-82
Uncontrolled Keywords: Biomassza hasznosítása, Energiaforrások - biológiai, Ritkaföldfémek
Additional Information: Bibliogr.: 82. p. ; ill. ; összefoglalás angol nyelven
Subjects: 02. Engineering and technology
02. Engineering and technology > 02.14. Environmental engineering
Date Deposited: 2022. Dec. 14. 15:12
Last Modified: 2023. Jul. 13. 10:39
URI: http://acta.bibl.u-szeged.hu/id/eprint/77874

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