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Application of Electrocoagulation for the Removal of Transition Metals in Water

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  • Tales Aguiar

    (School of Civil and Environmental Engineering and PPGEAS, Federal University of Goiás, Av. Universitária, nº 1488, Setor Universitário, CEP, Goiânia 74605-220, Brazil
    CIAMB, Federal University of Goiás, Avenida Esperança s/n, Câmpus Samambaia—Prédio da Reitoria, Goiânia 74690-900, Brazil)

  • Luis Baumann

    (Institute of Mathematics and Statics, Federal University of Goiás, Rua Jacarandá—Chácara Califórnia, Campus Samambaia, CEP, Goiânia 74001-970, Brazil)

  • Antonio Albuquerque

    (Department of Civil Engineering and Architecture, GeoBioTec, University of Beira Interior, Edificio 2 das Engenharias, Calcada Fonte do Lameiro, 6201-001 Covilha, Portugal
    FibEnTech, University of Beira Interior, Edificio 2 das Engenharias, Calcada Fonte do Lameiro, 6201-001 Covilha, Portugal)

  • Luiza Teixeira

    (College of Sanitary and Environmental Engineering, Federal University of Pará, Street Augusto Côrrea, 01—Guamá, CEP, Belém 66075-010, Brazil)

  • Eric de Souza Gil

    (College of Pharmacy, Federal University of Goiás, Street 240, Esquina com a 5ª Avenue, Setor Universitário, CEP, Goiânia 74605-170, Brazil)

  • Paulo Scalize

    (School of Civil and Environmental Engineering and PPGEAS, Federal University of Goiás, Av. Universitária, nº 1488, Setor Universitário, CEP, Goiânia 74605-220, Brazil
    CIAMB, Federal University of Goiás, Avenida Esperança s/n, Câmpus Samambaia—Prédio da Reitoria, Goiânia 74690-900, Brazil
    FibEnTech, University of Beira Interior, Edificio 2 das Engenharias, Calcada Fonte do Lameiro, 6201-001 Covilha, Portugal)

Abstract

Urban and industrial effluents, stormwater, road runoff, agricultural runoff, urban or mine waste deposits and fuel storage sites can lead to the contamination of water sources with compounds that are hard to biodegrade, such as heavy metals, whose removal requires advanced and expensive technologies. The Sustainable Development Goals (SDGs) established by the UN and the current requirements in terms of energy efficiency, reduction of carbon emissions, water reuse, waste valorization and preservation of public health, have led to a rethink concerning the typology of technologies for the treatment of water and the production of drinking water. Electrocoagulation (EC) stands out in this scenario due to its high efficiency in the removal of several pollutants, production of low sludge volumes and adaptability to the use of renewable energies. This is in addition to the ease with which it can be combined with other water treatment technologies. This work presents a literature review to systematize the use of EC for the removal of transition metals in water to produce drinking water, since these elements are present in several natural water sources and are parameters used in the legislation of many countries for the quality control of drinking water. The works found were analyzed in detail, and relationships between pre-set variables and categories were determined through regression analysis. Generally, it was found that EC is a highly efficient technology for the removal of transition metals in water (above 75% for most metals), specifically through parallel plates technologies with iron and aluminum electrodes with a minimum spacing of 1 cm and density minimum applied current of 10 A/m².

Suggested Citation

  • Tales Aguiar & Luis Baumann & Antonio Albuquerque & Luiza Teixeira & Eric de Souza Gil & Paulo Scalize, 2023. "Application of Electrocoagulation for the Removal of Transition Metals in Water," Sustainability, MDPI, vol. 15(2), pages 1-20, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:2:p:1492-:d:1033804
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    References listed on IDEAS

    as
    1. Joanna Stec & Urszula Kosikowska & Mariola Mendrycka & Dagmara Stępień-Pyśniak & Paulina Niedźwiedzka-Rystwej & Dominika Bębnowska & Rafał Hrynkiewicz & Joanna Ziętara-Wysocka & Ewelina Grywalska, 2022. "Opportunistic Pathogens of Recreational Waters with Emphasis on Antimicrobial Resistance—A Possible Subject of Human Health Concern," IJERPH, MDPI, vol. 19(12), pages 1-17, June.
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