Author(s): Lopes, Daniela V. ; Frade, Jorge R. ; Kavaleuski, Andrei V.
Date: 2024
Persistent ID: http://hdl.handle.net/10773/43708
Origin: RIA - Repositório Institucional da Universidade de Aveiro
Document details
Communication - On the possibility of Fe electrowinning from hematite suspensions in mixed-acid electrolytes
Description
Iron electrowinning offers a greener path for steel production. While alkaline media has received the most significant attention, the acidic media declined due to low Faradaic efficiency and difficulties imposed by fragile deposits. This study proposes, for the first time, prospects for acidic Fe electrowinning using a mixed-acid electrolyte (H2SO4+C2H2O4), comparing the deposition from hematite suspensions and soluble Fe2+ salts (FeSO4.7H2O). Oxalic acid emerges as a key factor, facilitating Fe electrodeposition by forming iron complexes in solution, addressing the challenge associated with slow Fe2O3 dissolution in H2SO4.
Document Type
Journal article
Language English
Language English
