Cited by 65Electrokinetic Soil Remediation TechniquesExtraction and Separation ProcessesMine drainage and remediation techniques

Electrodialytic Removal of Tungsten and Arsenic from Secondary Mine Resources—Deep Eutectic Solvents Enhancement

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Almeida, J., Craveiro, R., Faria, P., Silva, A.S., Mateus, E.P., Barreiros, S., Paiva, A., Ribeiro, A.B.·2020·Science of The Total Environment

Abstract

Tungsten is a critical raw material for European and U.S. economies. Tungsten mine residues, usually considered an environmental burden due to e.g. arsenic content, are also secondary tungsten resources. The electrodialytic (ED) process and deep eutectic solvents (DES) have been successfully and independently applied for the extraction of metals from different complex environmental matrices. In this study a proof of concept demonstrates that coupling DES in a two-compartment ED set-up enhances the removal and separation of arsenic and tungsten from Panasqueira mine secondary resources. Choline chloride with malonic acid (1:2), and choline chloride with oxalic acid (1:1) were the DES that in batch extracted the average maximum contents of arsenic (16%) and tungsten (9%) from the residues. However, when ED was operated at a current intensity of 100 mA for 4 days, the extraction yields increased 22% for arsenic and 11% for tungsten, comparing to the tests with no current. From the total arsenic and tungsten extracted, 82% and 77% respectively were successfully removed from the matrix compartment, as they electromigrated to the anolyte compartment, from where these elements can be further separated. This achievement potentiates circular economy, as the final treated residue could be incorporated in construction materials production, mitigating current environmental problems in both mining and construction sectors.

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  1. Cuesta-Lopez, S., 2017. Report on refractory metal increase potential -substitutes Journal Pre-proof J o u r n a l P r e -p r o o f nonrefractory metals, MSP-REFRAM D5.2. European Comission, 2017. Communication from the Comission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions on the 2017 list of Critical Raw Materials for the EU.

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Authors
Almeida, J., Craveiro, R., Faria, P., Silva, A. S., Mateus, E. P., Barreiros, S., Paiva, A., & Ribeiro, A. B.
Affiliations
  • Civil Engineering Research and Innovation for Sustainability (PT)
  • LAQV Requimte (PT)
  • Universidade Nova de Lisboa (PT)
  • National Laboratory for Civil Engineering (PT)
Corresponding author
  • Almeida, J.
  • Ribeiro, A.B.
Venue
Science of The Total Environment
Publisher
Elsevier BV
Published
2020-03
Volume
710
Pages
136364
ISSN
0048-9697 (ISSN-L)
OpenAlex
W2998002466
Cited by
65
References
37
Citations by year
2026: 12 · 2025: 9 · 2024: 4 · 2023: 6 · 2022: 11 · 2021: 14 · 2020: 9
FWCI
3.06
Type
journal article
Language
en
Open access
Locations
  • The Science of The Total Environment (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, other-oa)
  • Repositório Cientifico do LNEC (submittedVersion)
  • arXiv (Cornell University)
Funders
  • Horizon 2020 (778045)
  • FCT
  • MCTES (UID/AMB/04085/2019)
  • Associate Laboratory for Green Chemistry (UID/QUI/50006/2019)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrokinetic Soil Remediation Techniques
  • Physical Sciences › Engineering › Mechanical Engineering › Extraction and Separation Processes
  • Physical Sciences › Environmental Science › Environmental Chemistry › Mine drainage and remediation techniques
Keywords
electrodialysis, deep eutectic solvents, tungsten recovery, arsenic removal, mine tailings, choline chloride, malonic acid, oxalic acid, electromigration, critical raw materials, circular economy, Panasqueira mine

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