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Author:

Hao, Juanjuan (Hao, Juanjuan.) | Wang, Xiaolu (Wang, Xiaolu.) | Wang, Yishu (Wang, Yishu.) | Guo, Fu (Guo, Fu.) (Scholars:郭福) | Wu, Yufeng (Wu, Yufeng.)

Indexed by:

EI Scopus SCIE

Abstract:

The copper recovery from waste printed circuit boards is of great significance to protect natural resource and environment. Direct current electrodeposition has been applied to extract metal from hydrometallurgical leach solutions. However, during the direct current electrodeposition process, concentration polarization and hydrogen evolution reaction often exist, which reduces current efficiency and metal recovery capability. In this work, a pulse current was applied to electrodeposit copper. The electrolyte was the leach solution of waste printed circuit boards obtained using a sulfuric acid-hydrogen peroxide system. The influence of process parameters in the leaching stage and the electrodeposition process on current efficiency were both investigated. The results showed that the current efficiency was 95.1% in pulse current electrodeposition, while that was only 90.9% in direct current electrodeposition. The increased current efficiency was proposed to be attributed to the fact that pulse current electrodeposition could improve the mass transfer of copper ions which suppressed concentration polarization and hydrogen evolution reaction. These results demonstrate that pulse current electrodeposition is a promising approach for recovering copper from waste-printed circuit boards.

Keyword:

Pulsed electrodeposition Copper recycling Leaching Waste-printed circuit boards

Author Community:

  • [ 1 ] [Hao, Juanjuan]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 2 ] [Wang, Xiaolu]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 3 ] [Wang, Yishu]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 4 ] [Guo, Fu]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 5 ] [Wu, Yufeng]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 6 ] [Guo, Fu]Minist Educ, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
  • [ 7 ] [Guo, Fu]Beijing Union Univ, Coll Robot, Beijing 100101, Peoples R China

Reprint Author's Address:

  • [Wang, Xiaolu]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China;;[Guo, Fu]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China;;[Guo, Fu]Minist Educ, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China;;[Guo, Fu]Beijing Union Univ, Coll Robot, Beijing 100101, Peoples R China;;

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Source :

JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT

ISSN: 1438-4957

Year: 2023

Issue: 2

Volume: 25

Page: 1108-1119

3 . 1 0 0

JCR@2022

ESI Discipline: ENVIRONMENT/ECOLOGY;

ESI HC Threshold:17

Cited Count:

WoS CC Cited Count: 7

SCOPUS Cited Count: 8

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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