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- Title
Improved electrochemical recovery of metallic powder from acidic chloride-citrate electrolyte.
- Authors
Bingbing Li; Yi Hu; Mo Huang
- Abstract
Metal recovery from acidic chloride systems is significant for large-scale environmental remediation and sustainable metals recycling. However, there is a scarcity of electrodeposition processes suitable for acidic chloride media. Herein, an energy-efficient electrochemical recovery process for copper (Cu), selenium (Se), and tellurium (Te) recovery was first presented. The combination of a turbulent reactor with stainless steel electrode and an acidic chloride-citrate electrolyte led to a notable improvement in dilute metal electrodeposition recovery from the HCl system. The addition of citrate generated a synergistic improvement in metal electrodeposition from dilute solutions, effectively inhibiting unfavorable electrochemical reduction pathways. The enhanced mass transfer facilitated by the reactor further enhanced the quality, recovery, and current efficiency of the deposited metals. As a result, >98% Cu, Se, and Te were successfully extracted as a fine powder with a high current efficiency of 90%. This strategy presents an alternative, low-cost, and efficient platform for metal recovery and wastewater remediation.
- Subjects
COPPER; ELECTROFORMING; METAL recycling; MASS transfer; ENVIRONMENTAL remediation; POWDERS
- Publication
Desalination & Water Treatment, 2023, Vol 304, p210
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2023.29820