Copper recovery from industrial wastewater - Synergistic electrodeposition onto nanocarbon materials

Grzegorz Stando, Pyry-Mikko Hannula, Bogumiła Kumanek, Mari Lundström, Dawid Janas*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

In this study, copper present in industrial waste water with a variety of other impurities (Fe, Mg, Al, Zn, As) was subjected for selective electrochemical recovery. The recovery was conducted directly on carbon nanostructures in order to create added-value products synergistically. In-depth electrochemical and structural analysis showed that single/multi-walled carbon nanotubes (CNTs) and graphene composites could provide an excellent substrate for Cu's electrochemical recovery. Furthermore, formulations based on them also enabled the formation of even Cu deposits on the surface directly from wastewater solutions without further bath condition adjustments. After just 1-h electrodeposition at −0.1V vs. SCE, a nanocomposite based on CNTs was obtained. Cu was recovered exclusively and accounted for 45% of the total weight of the composite.

Original languageEnglish
Article number100156
Number of pages13
JournalWater Resources and Industry
Volume26
Early online date24 Jul 2021
DOIs
Publication statusE-pub ahead of print - 24 Jul 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Circular economy
  • Copper recovery
  • Electrodeposition
  • Waste management

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