Behaviour of zinc during the process of leaching copper from WPCBs by typical acidic ionic liquids

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 34921-34926 ◽  
Author(s):  
Mengjun Chen ◽  
Jiqin Wang ◽  
Jinxiu Huang ◽  
Haiyan Chen
Keyword(s):  
Heavy Metals ◽  
Ionic Liquids ◽  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Leaching Behavior ◽  
Printed Circuit ◽  
Leaching Process ◽  
Waste Printed Circuit Boards ◽  
Copper And Zinc ◽  
Acidic Ionic Liquids

The leaching behavior of zinc, representing heavy metals, during the process of recycling copper in typical acidic ionic liquids from waste printed circuit boards was examined and the connection between copper and zinc during the leaching process was investigated in detail.

A long-term static immersion experiment on the leaching behavior of heavy metals from waste printed circuit boards

2014 ◽  
Vol 16 (8) ◽  
pp. 1967-1974 ◽  
Author(s):  
Guo-hua Zhao ◽  
Xing-zhang Luo ◽  
Gui Chen ◽  
Yong-jun Zhao
Keyword(s):  
Heavy Metals ◽  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Leaching Behavior ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards ◽  
Immersion Experiment ◽  
Main Components ◽  
Static Immersion

Printed circuit boards (PCBs) are the main components of electrical and electronic equipment (EEE).

Copper leaching from waste printed circuit boards using typical acidic ionic liquids recovery of e-wastes’ surplus value

2018 ◽  
Vol 78 ◽  
pp. 191-197 ◽  
Author(s):  
Ding-jun Zhang ◽  
Li Dong ◽  
Yong-tong Li ◽  
Yanfei Wu ◽  
Ying-xia Ma ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Surplus Value ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards ◽  
Copper Leaching ◽  
Acidic Ionic Liquids

scholarly journals Simulation and economic analysis of a hydrometallurgical approach developed for the treatment of waste printed circuit boards (WPCB)

2018 ◽  
Vol 20 (4) ◽  
pp. 695-699
Keyword(s):  
Sulfuric Acid ◽  
Printed Circuit Boards ◽  
Material Balance ◽  
Precious Metals ◽  
Industrial Plant ◽  
Circuit Boards ◽  
Metal Powders ◽  
Printed Circuit ◽  
Leaching Process ◽  
Waste Printed Circuit Boards

<p>This paper presents the main achievements of a hydrometallurgical process to recover base and precious metals from waste printed circuit boards (WPCB). The technology comprises a first leaching process performed in a two-step counter current way with sulfuric acid and hydrogen peroxide for base metals solubilization and a consecutive cross leaching process with thiourea, ferric sulfate and sulfuric acid to extract precious metals. Furthermore, the reach solutions are subjected to cementation procedure with zinc powder to recover the elements of interests as metal powders. The spent solution achieved after cementation of precious metals is partially recycled within the process and the other part is treated by Fenton process and then neutralized with lime. Considering the achieved results at the laboratory level, the entire procedure was simulated using SuperPro Designer software to determine the process economy for an industrial plant. Besides this, the use of this software allows achieving the material balance of a process and the design of the plant. As a result, the process implementation at a larger scale is simulated and the main issues that can result in such a case can be determined and solved.</p>

Recovery of heavy metals from waste printed circuit boards: statistical optimization of leaching and residue characterization

2019 ◽  
Vol 26 (24) ◽  
pp. 24417-24429 ◽  
Author(s):  
Rasoul Khayyam Nekouei ◽  
Farshid Pahlevani ◽  
Rabeeh Golmohammadzadeh ◽  
Mohammad Assefi ◽  
Ravindra Rajarao ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Printed Circuit Boards ◽  
Statistical Optimization ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards
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