Journal article Open Access

Electrochemical Deposition of Zero-Valent Iron from Alkaline Ceramic Suspensions of Fe2−xAlxO3 for Iron Valorisation

Daniela V. Lopes; Andrei V. Kovalevsky; Margarida J. Quina; Jorge R. Frade


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  <identifier identifierType="URL">https://zenodo.org/record/4154972</identifier>
  <creators>
    <creator>
      <creatorName>Daniela V. Lopes</creatorName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-0652-5070</nameIdentifier>
      <affiliation>CICECO—Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810- 193 Aveiro, Portugal</affiliation>
    </creator>
    <creator>
      <creatorName>Andrei V. Kovalevsky</creatorName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-5814-9797</nameIdentifier>
      <affiliation>CICECO—Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810- 193 Aveiro, Portugal</affiliation>
    </creator>
    <creator>
      <creatorName>Margarida J. Quina</creatorName>
      <affiliation>CIEPQPF—Research Centre on Chemical Processes Engineering and Forest Products, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima, 3030-790 Coimbra, Portugal</affiliation>
    </creator>
    <creator>
      <creatorName>Jorge R. Frade</creatorName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-8445-2562</nameIdentifier>
      <affiliation>CICECO—Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810- 193 Aveiro, Portugal</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Electrochemical Deposition of Zero-Valent Iron from Alkaline Ceramic Suspensions of Fe2−xAlxO3 for Iron Valorisation</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2020</publicationYear>
  <dates>
    <date dateType="Issued">2020-10-29</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/4154972</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1149/1945-7111/ab9a2b</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://zenodo.org/communities/siderwin</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;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&amp;minus;xAlxO3 ceramic in alkaline suspensions (10 M of NaOH) was assessed at relatively low temperature (90 &amp;deg;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&lt;br&gt;
example, red mud or other aluminium containing wastes by electrowinning in alkaline conditions.&lt;/p&gt;</description>
  </descriptions>
  <fundingReferences>
    <fundingReference>
      <funderName>European Commission</funderName>
      <funderIdentifier funderIdentifierType="Crossref Funder ID">10.13039/501100000780</funderIdentifier>
      <awardNumber awardURI="info:eu-repo/grantAgreement/EC/H2020/768788/">768788</awardNumber>
      <awardTitle>Development of new methodologies for industrial CO2-free steel production by electrowinning</awardTitle>
    </fundingReference>
  </fundingReferences>
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