A new method for recovering rare earth elements from the hyperaccumulating fern Dicranopteris linearis from China

Jally, Bastien; Laubie, Baptiste; Chour, Zeinab; Muhr, Laurence; Qiu, Rongliang; Morel, Jean-Louis; Tang, Yetao; Simonnot, Marie-Odile

doi:10.1016/j.mineng.2021.106879

Cited by 23 publications

(6 citation statements)

References 53 publications

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“…It was observed that 2032 mg kg -1 REEs in the plant was enhanced to 15956 mg kg -1 in the solid remain; and 93% of rare earth metal input from the biomass was converted into the ash sample. Likewise, incineration of the collected fern Dicranopteris linearis at 550 °C resulted in 92.3% mass reduction [10]. The concentration of REEs in the ash (30000 mg kg -1 ) is over eleven times greater than in the plant (2700 mg kg -1 ).…”

Section: Introductionmentioning

confidence: 98%

“…Following that, rare earth minerals accumulated in plants could be reclaimed via extraction technologies [7]- [9]. However, before the extraction process, contaminated biomass needs to be reduced, and REEs would be enriched in solid residuals called bio-ores [10]. Several enrichment manners including composting, compaction, thermal conversion (ashing, pyrolysis, gasification, combustion) have been mentioned [11], [12].…”

Section: Introductionmentioning

confidence: 99%

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Enrichment of rare earth elements from contaminated biomass prior to extraction

Dinh

Dobó

Kovács

2022

Anal. Tech. Szeged.

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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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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Enrichment of rare earth elements from contaminated biomass prior to extraction

Dinh

Dobó

Kovács

2022

Anal. Tech. Szeged.

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“…Phytomining has opened a new era in reclaiming valuable metals from brownfields where traditional mining techniques are not competitive [ 8 ]. The phytomining concept integrates three research areas: i) Accumulation of metals from brownfields to plants so called phytoextraction referred to as the first stage [ [8] , [9] , [10] ]; ii) Following that, enrichment process concentrates metals from biomass into solid residuals [ 11 ]; iii) Ultimately, extraction of high-value elements from the solid remains is the eventual step in the overall picture of phytomining [ [12] , [13] , [14] ]. As an example, the phytomining of nickel has been successfully demonstrated at different scales [ [15] , [16] , [17] , [18] , [19] ].…”

Section: Introductionmentioning

confidence: 99%

“…In terms of REEs, by incinerating the harvested Dicranopteris linearis fern at 500 °C, 2032 mg kg −1 of rare earth metals in plants was elevated to a concentration of 15956 mg kg −1 in ashes; the solid remains accounted for the conversion of 93 % of the REE input from the plants [ 32 ]. Similarly, 92.3 wt% of fern species ( Dicranopteris linearis ) were lessened after ashing at a temperature of 550 °C [ 12 ]. Consequently, rare earth metals were concentrated in the solid residue consisting of 3000 mg kg −1 REEs, which is over 11 times higher compared to biomass.…”

Section: Introductionmentioning

confidence: 99%

The fate of noble metals and rare earth elements during pelletized biomass combustion

Dinh,

Kovács,

Dobó

2024

Heliyon

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“…Several processes have been developed for the recovery of REEs from hyperaccumulators due to the increasing importance of REEs [11]. For instance, D. dichotoma is an REE hyperaccumulator that can accumulate 1.9~4.4 g/kg of REEs on a dry matter basis.…”

Section: Introductionmentioning

confidence: 99%

Rare Earth Element Recovery and Hydrochar Evaluation from Hyperaccumulator by Acid Leaching and Microwave-Assisted Hydrothermal Carbonization

Li,

Ji,

Zhang

2024

Minerals

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Phytomining is a sustainable approach that uses hyperaccumulators for critical element extraction from various substrates, such as contaminated soils, mine tailings, and aqueous solutions. In this study, grass seeds were fed with a solution containing Y, La, Ce, and Dy, resulting in around 510 mg/kg (dry basis) of total rare earth elements (TREEs) accumulated in grass leaves. Electron probe microanalyzer (EPMA) analysis showed that rare earth elements (REEs) in the grass leaves (GL) predominantly complexed with phosphorous (P). Around 95% of Y, 93% of La, 92% of Ce, and 93% of Dy were extracted from the GL using 0.5 mol/L H2SO4 at a solid concentration of 5 wt.%. Subsequently, microwave-assisted hydrothermal carbonization (MHTC) was used to convert the leaching residue into hydrochar to achieve a comprehensive utilization of GL biomass. The effect of temperature on the structural properties and chemical composition of the resulting hydrochar was evaluated. Scanning electron microscopy (SEM) analysis revealed that the original structure of GL was destroyed at 180 °C during MHTC, producing numerous microspheres and pores. As the reaction temperature increased, there was a concurrent increase in carbon content, a higher heating value (HHV), and energy densification, coupled with a decrease in the hydrogen and oxygen contents of hydrochar. The evolution of H/C and O/C ratios indicated that dehydration and decarboxylation occurred during MHTC. The results showed that the waste biomass of the GL after REE extraction can be effectively converted into energy-rich solid fuel and low-cost adsorbents via MHTC.

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A new method for recovering rare earth elements from the hyperaccumulating fern Dicranopteris linearis from China

Cited by 23 publications

References 53 publications

Enrichment of rare earth elements from contaminated biomass prior to extraction

Enrichment of rare earth elements from contaminated biomass prior to extraction

The fate of noble metals and rare earth elements during pelletized biomass combustion

Rare Earth Element Recovery and Hydrochar Evaluation from Hyperaccumulator by Acid Leaching and Microwave-Assisted Hydrothermal Carbonization

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