Recovery of scandium from various sources: A critical review of the state of the art and future prospects

ABB Junior, DCR Espinosa, J Vaughan… - Minerals Engineering, 2021 - Elsevier
Scandium is a critical metal in increasing demand for modern technologies, such as light-
weight aluminum-scandium alloys. Evaluating current and identifying new sources of the …

Cobalt recovery from Li-ion battery recycling: a critical review

AB Botelho Junior, S Stopic, B Friedrich, JAS Tenório… - Metals, 2021 - mdpi.com
The increasing demand for Li-ion batteries for electric vehicles sheds light upon the Co
supply chain. The metal is crucial to the cathode of these batteries, and the leading global …

Sulfuric acid leaching of metals from waste Li-ion batteries without using reducing agent

LF Guimarães, ABB Junior, DCR Espinosa - Minerals Engineering, 2022 - Elsevier
One way to obtain critical metals in lithium-ion batteries (LIBs) used in electric cars is to
apply hydrometallurgical methods such as acid leaching. Current leaching technologies use …

Selective separation of Sc (III) and Zr (IV) from the leaching of bauxite residue using trialkylphosphine acids, tertiary amine, tri-butyl phosphate and their mixtures

ABB Junior, DCR Espinosa, JAS Tenório - Separation and Purification …, 2021 - Elsevier
The separation of scandium from the solution generated in acid leaching is one of the main
challenges for the hydrometallurgical processing of bauxite residue. Several organic …

Enhanced degradation performance and mechanisms of decabromodiphenylether in homogeneous system of Fe3+ activated dithionite

W Song, Z Wang, J Li, X Zhang, C Fu, X Du… - Journal of Cleaner …, 2023 - Elsevier
Brominated flame retardant (BFR) generally could be debrominated and degraded
effectively by photolysis with high energy demand and waste production. However, in this …

A comparative study of electrodeposition and sodium dithionite reduction for recovering gold in gold-rich solution from the adsorption of thiosulfate solution by ion …

Z Dong, T Jiang, B Xu, J Wu, Q Li, Y Yang - Separation and Purification …, 2024 - Elsevier
A comparative study was performed on electrodeposition and sodium dithionite reduction for
recovering gold in the gold-rich solution from the adsorption of thiosulfate solution by ion …

[HTML][HTML] Recovery of metals by ion exchange process using chelating resin and sodium dithionite

ABB Junior, A de Albuquerque Vicente… - Journal of Materials …, 2019 - Elsevier
Chelating ion exchange resins can be used to recover metals from nickel laterite leach
solution. The main problem is the high presence of iron. In pH above 2.00, iron precipitates …

Extraction of scandium from critical elements-bearing mining waste: silica gel avoiding in leaching reaction of bauxite residue

AB Botelho Junior, DCR Espinosa… - Journal of Sustainable …, 2021 - Springer
Scandium is one of the most valuable rare-earth elements, and its extraction is centralized in
China. For this reason, the search for new scandium sources is required to supply the …

[HTML][HTML] Comparative study of selective copper recovery techniques from nickel laterite leach waste towards a competitive sustainable extractive process

ID Perez, IA Anes, ABB Junior… - Cleaner Engineering and …, 2020 - Elsevier
The launch of the 17 SDGs in 2015 cast a light in the challenges on sustainable
development impacting directly all industrial process, including extractives. As a result …

Characterization of bauxite residue from a press filter system: comparative study and challenges for scandium extraction

AB Botelho Junior, DCR Espinosa… - Mining, Metallurgy & …, 2021 - Springer
A new step in the Bayer process has been used to recover NaOH and to reduce its content
in red mud. After digestion, the residue is separated from the Bayer liquor and goes through …