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Development of Coloured Stoneware Bodies through the Incorporation of Industrial Cr/Ni Electroplating Sludge

Author

Listed:
  • Inês Silveirinha Vilarinho

    (CICECO—Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal)

  • Jorge Carneiro

    (Grestel—Produtos Cerâmicos S.A, Zona Industrial de Vagos—Lote 78, 3840-385 Vagos, Portugal)

  • Carlos Pinto

    (Grestel—Produtos Cerâmicos S.A, Zona Industrial de Vagos—Lote 78, 3840-385 Vagos, Portugal)

  • João António Labrincha

    (CICECO—Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal)

  • Maria Paula Seabra

    (CICECO—Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal)

Abstract

Electroplating sludge (ES) is currently disposed in landfills and, because of its heavy metal content, poses serious threats to the environment and human health. However, ES might have potential use as colouring agent due to its high concentration of chromium and nickel. Thus, the present work aims at studying the effect of ES incorporation into stoneware bodies. The influence on the final characteristics of fired samples, ES amount and pre-treatment were analysed. It was found that stoneware pastes having uniform brownish hues can be obtained with only 3 wt.% of sieved (<212 μm) ES. The obtained specimens have, once fired, the desired technical and aesthetical characteristics. Further, leaching tests confirmed the immobilisation of hazardous ES species in the ceramic matrix. Hence, it can be concluded that this waste can be used as colouring agent of stoneware pastes substituting commercial pigments and contributing to more sustainable consumption and production in the ceramic sector.

Suggested Citation

  • Inês Silveirinha Vilarinho & Jorge Carneiro & Carlos Pinto & João António Labrincha & Maria Paula Seabra, 2021. "Development of Coloured Stoneware Bodies through the Incorporation of Industrial Cr/Ni Electroplating Sludge," Sustainability, MDPI, vol. 13(4), pages 1-13, February.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:4:p:1999-:d:498444
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    Citations

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    Cited by:

    1. Daniela Carolina Paz-Gómez & Inês Silveirinha Vilarinho & Silvia M. Pérez-Moreno & João Carvalheiras & José Luis Guerrero & Rui Miguel Novais & Maria Paula Seabra & Guillermos Ríos & Juan Pedro Bolíva, 2021. "Immobilization of Hazardous Wastes on One-Part Blast Furnace Slag-Based Geopolymers," Sustainability, MDPI, vol. 13(23), pages 1-18, December.

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