Enrichment of rare earth elements from contaminated biomass prior to extraction

Truong Dinh; Zsolt  Dobó; Helga Kovács

doi:10.14232/analecta.2022.1.77-82

Authors

Truong Dinh University of Miskolc, Institute of Energy and Quality https://orcid.org/0000-0003-3810-4764
Zsolt Dobó University of Miskolc, Institute of Energy and Quality
Helga Kovács University of Miskolc, Institute of Energy and Quality https://orcid.org/0000-0001-9189-2048

DOI:

https://doi.org/10.14232/analecta.2022.1.77-82

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.

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References

D. Schüler, M. Buchert, R. Liu, S. Dittrich, and C. Merz, “Study on rare earths and their recycling,” Öko-Institut eV Darmstadt, vol. 49, pp. 30–40, 2011.

V. Balaram, “Rare earth elements: A review of applications, occurrence, exploration, analysis, recycling, and environmental impact,” Geosci. Front., vol. 10, no. 4, pp. 1285–1303, Jul. 2019.

S. Massari and M. Ruberti, “Rare earth elements as critical raw materials: Focus on international markets and future strategies,” Resour. Policy, vol. 38, no. 1, pp. 36–43, Mar. 2013.

G. Gunn, Ed., Critical Metals Handbook. Oxford: John Wiley & Sons, 2014.

B. Jally, B. Laubie, Y.-T. Tang, and M.-O. Simonnot, “Processing of Plants to Products: Gold, REEs and Other Elements BT -Agromining: Farming for Metals: Extracting Unconventional Resources Using Plants,”A. van der Ent, A. J. M. Baker, G. Echevarria, M.-O. Simonnot, and J. L. Morel, Eds. Cham: Springer International Publishing, 2021, pp. 63–74.

A. van der Ent, A. J. M. Baker, G. Echevarria, M.-O. Simonnot, and J. L. Morel, Eds., Agromining: Farming for Metals. Cham: Springer International Publishing, 2021.

Z. Chour et al., “Recovery of rare earth elements from Dicranopteris dichotoma by an enhanced ion exchange leaching process,” Chem. Eng. Process. -Process Intensif., vol. 130, pp. 208–213, Aug. 2018.

B. Laubie, Z. Chour, Y.-T. Tang, J.-L. Morel, M.-O. Simonnot, and L. Muhr, “REE Recovery from the Fern D. Dichotoma by Acid Oxalic Precipitation After Direct Leaching with EDTA,” 2018, pp. 2659–2667.

Z. Chour, B. Laubie, J. L. Morel, Y.-T. Tang, M.-O. Simonnot, and L. Muhr, “Basis for a new process for producing REE oxides from Dicranopteris linearis,” J. Environ. Chem. Eng., vol. 8, no. 4, p. 103961, Aug. 2020.

B. Jally et al., “A new method for recovering rare earth elements from the hyperaccumulating fern Dicranopteris linearis from China,” Miner. Eng., vol. 166, p. 106879, Jun. 2021.

H. Kovacs and K. Szemmelveisz, “Disposal options for polluted plants grown on heavy metal contaminated brownfield lands –A review,” Chemosphere, vol. 166, pp. 8–20, 2017.

T. Dinh, Z. Dobo, and H. Kovacs, “Phytomining of noble metals –A review,” Chemosphere, vol. 286, p. 131805, Jan. 2022.

C. Liu et al., “Element Case Studies: Rare Earth Elements,” 2021, pp. 471–483.

B. Qin et al., “Vacuum pyrolysis method for reclamation of rare earth elements from hyperaccumulator Dicranopteris dichotoma grown in contaminated soil,” J. Clean. Prod., vol. 229, pp. 480–488, Aug. 2019.