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ECO-FRIENDLY DEMETALLISATION OF METALLISED ACRYLONITRILE-BUTADIENE-STYRENE (ABS) BY USING BIOGENIC LIXIVIANTS

  • Salvador Pocoví-Martínez - Chemical Technologies, AIDIMME - Instituto Tecnológico Metalmecánico, Mueble, Madera, Embalaje y Afines, Spain
  • Laura Grima-Carmena - Chemical technologies, AIDIMME - Instituto Tecnológico Metalmecánico, Mueble, Madera, Embalaje y Afines, Spain
  • Sales Ibiza Palacios - Materials laboratory, AIDIMME - Instituto Tecnológico Metalmecánico, Mueble, Madera, Embalaje y Afines, Spain
  • Lucía Martín Román - Materials laboratory, AIDIMME - Instituto Tecnológico Metalmecánico, Mueble, Madera, Embalaje y Afines, Spain
  • Carla Camiña Urgel - Materials laboratory, AIDIMME - Instituto Tecnológico Metalmecánico, Mueble, Madera, Embalaje y Afines, Spain
  • Francisco Bosch Mossi - Chemical Technologies, AIDIMME - Instituto Tecnológico Metalmecánico, Mueble, Madera, Embalaje y Afines, Spain

DOI 10.31025/2611-4135/2025.19519

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Copyright: © 2025 CISA Publisher

Abstract

A novel environmental process for the demetallisation of metal coated (Cu, Ni and Cr) acrylonitrile-butadiene-styrene (ABS) was developed. Different biogenic lixiviants were generated and combined to carry out the indirect bioleaching tests on different formats of metallised ABS waste. The best bioleaching conditions were obtained for a high metal dissolution (Cu and Ni), the effective separation of metallic Cr and the obtention of unaltered ABS, suitable to be reused. The lixiviant solution can be reused several times to concentrate Cu and Ni. The process also includes the use of spent pickling acids for pH adjustment, which offered similar results compared to tests done with acids. That settles the circular economy approach in the Valencian sector to recover hazardous wastes.

Keywords

Editorial History

  • Received: 03 Jun 2025
  • Revised: 31 Jul 2025
  • Accepted: 06 Aug 2025
  • Available online: 09 Sep 2025

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