| Texto completo | |
| Autor(es): |
Gijon, Diego Teuber
;
Gimenes, Luciana Jandelli
;
Baltazar, Marcela dos Passos Galluzzi
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | HYDROMETALLURGY; v. 239, p. 17-pg., 2026-01-01. |
| Resumo | |
Rare earth elements (REE) are a group of metals known for their recurrent use in ceramic materials, batteries, computer circuitry, and by their decreasing availability. A small group of countries control the concentrated mineral sources of REE and their production, while low-concentration sources are sparse and have low economic value. Global demand for these elements has reached an all-time high in the last five years, which foresees a necessary change in the way REE is obtained. Industrial and domestic residues have shown invaluable potential as secondary sources of REE. The exploration of these sources brings a direct approach to the principles of circular economy. Phosphogypsum (PG), a residue from the production of fertilizers, is an example of said sources with more than 250 million tons stored and considerable amount of REE (>0.5 wt.%). This short review will succinctly analyze current approaches to REE recovery from phosphogypsum while also evaluating its intrinsic value and place in a circular economy. The 12 principles of the hydrometallurgical circular economy will be used in this evaluation. Different ways to improve REE recovery have also been exposed, while implicating the challenges and new approaches utilizing combined processes, artificial intelligence and neural networks. (AU) | |
| Processo FAPESP: | 19/11866-5 - Desenvolvimento de processos inovadores para recuperação de metais críticos |
| Beneficiário: | Denise Crocce Romano Espinosa |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |