Enrichment of rare earth elements from contaminated biomass prior to extraction

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