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Recovery of palladium from waste fashion items through food waste by-products

Teresa Cecchi, Zhaojing Gao, Christophe Clément, Yasser Matos-Peralta, Olivier Girard and Clara Santato

Article (2023)

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Abstract

Palladium is a non-toxic platinum group metal indispensable for several industrial applications. It is among the 44 endangered elements; hence, its recycling from secondary sources is crucial. Waste plated metal wires from the fashion industry are an important waste stream for this precious metal. We propose a sustainable route for Pd recovery where palladium peels off in its metallic state in a single-step, room-temperature process. At the same time, readily oxidizable base metals are leached under very mild conditions using a green oxidant, hydrogen peroxide, and lactic acid, a food chain byproduct. This strategy is chemically rational, cost-effective, and environmentally friendly. The recovered Pd was successfully recycled to fabricate source and drain electrodes in organic field-effect transistors. Waste wires, recovered palladium flakes, and e-beam evaporated Pd electrodes were characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, and atomic force microscopy to examine their morphology and (surface) chemical composition.

Department: Department of Engineering Physics
PolyPublie URL: https://publications.polymtl.ca/56699/
Journal Title: RSC Sustainability (vol. 1, no. 9)
Publisher: Royal Society of Chemistry
DOI: 10.1039/d3su00242j
Official URL: https://doi.org/10.1039/d3su00242j
Date Deposited: 23 Jan 2024 15:53
Last Modified: 09 Apr 2024 10:32
Cite in APA 7: Cecchi, T., Gao, Z., Clément, C., Matos-Peralta, Y., Girard, O., & Santato, C. (2023). Recovery of palladium from waste fashion items through food waste by-products. RSC Sustainability, 1(9), 2350-2357. https://doi.org/10.1039/d3su00242j

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