Recovery of silver from waste printed circuit boards (WPCBs) through hydrometallurgical route: A review
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...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-08-01
|
| Series: | Environmental Challenges |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667010021000524 |
| _version_ | 1818455982717534208 |
|---|---|
| author | Gautam Mishra Rohit Jha Mudila Dhanunjaya Rao Arunabh Meshram Kamalesh K. Singh |
| author_facet | Gautam Mishra Rohit Jha Mudila Dhanunjaya Rao Arunabh Meshram Kamalesh K. Singh |
| author_sort | Gautam Mishra |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-14T22:19:26Z |
| format | Article |
| id | doaj.art-0441b7090b384102ac2848dced3d1247 |
| institution | Directory Open Access Journal |
| issn | 2667-0100 |
| language | English |
| last_indexed | 2024-12-14T22:19:26Z |
| publishDate | 2021-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Environmental Challenges |
| spelling | doaj.art-0441b7090b384102ac2848dced3d12472022-12-21T22:45:32ZengElsevierEnvironmental Challenges2667-01002021-08-014100073Recovery of silver from waste printed circuit boards (WPCBs) through hydrometallurgical route: A reviewGautam Mishra0Rohit Jha1Mudila Dhanunjaya Rao2Arunabh Meshram3Kamalesh K. Singh4Department of metallurgical engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi - 221005, IndiaDepartment of metallurgical engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi - 221005, India; Corresponding author.Department of metallurgical engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi - 221005, IndiaMetallurgical and Materials Engineering Department, National Institute of Technology, Raipur - 492010, IndiaDepartment of metallurgical engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi - 221005, IndiaThe 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.http://www.sciencedirect.com/science/article/pii/S2667010021000524Waste printed circuit boardsLeachingSilverRecoveryHydrometallurgy |
| spellingShingle | Gautam Mishra Rohit Jha Mudila Dhanunjaya Rao Arunabh Meshram Kamalesh K. Singh Recovery of silver from waste printed circuit boards (WPCBs) through hydrometallurgical route: A review Environmental Challenges Waste printed circuit boards Leaching Silver Recovery Hydrometallurgy |
| title | Recovery of silver from waste printed circuit boards (WPCBs) through hydrometallurgical route: A review |
| title_full | Recovery of silver from waste printed circuit boards (WPCBs) through hydrometallurgical route: A review |
| title_fullStr | Recovery of silver from waste printed circuit boards (WPCBs) through hydrometallurgical route: A review |
| title_full_unstemmed | Recovery of silver from waste printed circuit boards (WPCBs) through hydrometallurgical route: A review |
| title_short | Recovery of silver from waste printed circuit boards (WPCBs) through hydrometallurgical route: A review |
| title_sort | recovery of silver from waste printed circuit boards wpcbs through hydrometallurgical route a review |
| topic | Waste printed circuit boards Leaching Silver Recovery Hydrometallurgy |
| url | http://www.sciencedirect.com/science/article/pii/S2667010021000524 |
| work_keys_str_mv | AT gautammishra recoveryofsilverfromwasteprintedcircuitboardswpcbsthroughhydrometallurgicalrouteareview AT rohitjha recoveryofsilverfromwasteprintedcircuitboardswpcbsthroughhydrometallurgicalrouteareview AT mudiladhanunjayarao recoveryofsilverfromwasteprintedcircuitboardswpcbsthroughhydrometallurgicalrouteareview AT arunabhmeshram recoveryofsilverfromwasteprintedcircuitboardswpcbsthroughhydrometallurgicalrouteareview AT kamaleshksingh recoveryofsilverfromwasteprintedcircuitboardswpcbsthroughhydrometallurgicalrouteareview |