4154972
doi
10.1149/1945-7111/ab9a2b
oai:zenodo.org:4154972
user-siderwin
user-siderwin_project
user-eu
Andrei V. Kovalevsky
CICECO—Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810- 193 Aveiro, Portugal
Margarida J. Quina
CIEPQPF—Research Centre on Chemical Processes Engineering and Forest Products, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima, 3030-790 Coimbra, Portugal
Jorge R. Frade
CICECO—Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810- 193 Aveiro, Portugal
Electrochemical Deposition of Zero-Valent Iron from Alkaline Ceramic Suspensions of Fe2−xAlxO3 for Iron Valorisation
Daniela V. Lopes
CICECO—Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810- 193 Aveiro, Portugal
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
<p>Electrochemical reduction of iron oxides into zero-valent iron (ZVI, Fe0) is a promising alternative to the traditional methods used for iron production. The electrochemical deposition of Fe0 from hematite and hematite-based Fe2−xAlxO3 ceramic in alkaline suspensions (10 M of NaOH) was assessed at relatively low temperature (90 °C). Ceramic compositions aimed to mimic the main components of red mud waste from the alumina refining industry for iron valorisation purposes. The impact of aluminium content on the electroreduction and microstructure of the deposited Fe0 films was demonstrated and discussed. Trapping and following the leaching of the aluminium species during deposition causes drastic morphological changes and induces significant porosity. Faradaic efficiencies of the reduction to Fe0 were found to decrease from 70% to 32% for Fe2O3 and Fe1.4Al0.6O3, respectively. The results highlight possible effects imposed by aluminium presence during Fe0 electrodeposition for future iron recycling from, for<br>
example, red mud or other aluminium containing wastes by electrowinning in alkaline conditions.</p>
Zenodo
2020-10-29
info:eu-repo/semantics/article
4154971
user-siderwin
user-siderwin_project
user-eu
award_title=Development of new methodologies for industrial CO2-free steel production by electrowinning; award_number=768788; award_identifiers_scheme=url; award_identifiers_identifier=https://cordis.europa.eu/projects/768788; funder_id=00k4n6c32; funder_name=European Commission;
1678891999.389279
1674334
md5:07ee813844f5d2bd09ae47b808171c86
https://zenodo.org/records/4154972/files/Electrochemical Deposition of Zero-Valent Iron from Alkaline Ceramic Suspensions of Fe2−xAlxO3 for Iron Valorisation.pdf
public