Recovery of silver from waste printed circuit boards (WPCBs) through hydrometallurgical route: A review

Recovery of silver from waste printed circuit boards (WPCBs) through hydrometallurgical route: A review

Mishra, Gautam;Jha, Rohit;Rao, Mudila Dhanunjaya;Meshram, Arunabh;Singh, Kamalesh K.;
Environmental Challenges 2021 Vol. 4 pp. 100073-
121
mishra2021recoveryenvironmental

Abstract

The modernization of technologies has led to the escalation of the demand for silver in the electrical and electronics manufacturing sectors. Conventional lean grade ores of silver are insufficient to account for silver consumption. This deficit compels the extraction engineers to broaden the scope and delve into secondary silver recovery and recycling. The key purpose of current work is to draw attention to the modern hydrometallurgical technologies in silver recovery from waste printed circuit boards (WPCBs). Abundant with the base and precious metals, WPCBs form a plethora of important materials and the efficient recycling of WPCBs is essential for economic and environmental reasons. Low capital cost, high selectivity, no dust generation and reduced environmental effect advocate the versatility of hydrometallurgical route. Silver leaching from WPCBs through cyanide, thiourea and thiosulfate have been investigated. Cementation, ion exchange, solvent extraction, and membrane processes employed for recovery of silver have been studied. This review provides a holistic view of the significant technological advances throughout the world to recover silver from the WPCBs by hydrometallurgical route.

Citation

ID: 276074
Ref Key: mishra2021recoveryenvironmental
Use this key to autocite in SciMatic or Thesis Manager

References

Blockchain Verification

Account:
NFT Contract Address:
0x95644003c57E6F55A65596E3D9Eac6813e3566dA
Article ID:
276074
Unique Identifier:
Network:
Scimatic Chain (ID: 481)
Loading...
Blockchain Readiness Checklist
Authors
Abstract
Journal Name
Year
Title
5/5
Creates 1,000,000 NFT tokens for this article
Token Features:
  • ERC-1155 Standard NFT
  • 1 Million Supply per Article
  • Transferable via MetaMask
  • Permanent Blockchain Record
Blockchain QR Code
Scan with Saymatik Web3.0 Wallet

Saymatik Web3.0 Wallet