Assessment of precious metals positioning in waste printed circuit boards and the economic benefits of recycling

2022 ◽  
Vol 139 ◽  
pp. 105-115
Author(s):  
Taiyu Huang ◽  
Jie Zhu ◽  
Xiongfei Huang ◽  
Jujun Ruan ◽  
Zhenming Xu
Keyword(s):  
Printed Circuit Boards ◽  
Precious Metals ◽  
Economic Benefits ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards

Mechanism of Gold Cyanidation in Bioleaching of Precious Metals from Waste Printed Circuit Boards

2020 ◽  
Vol 8 (51) ◽  
pp. 18975-18981
Author(s):  
Mi Lin ◽  
Zhe Huang ◽  
Zhihui Yuan ◽  
Yonggao Fu ◽  
Jiaqi Hu ◽  
...  
Keyword(s):  
Printed Circuit Boards ◽  
Precious Metals ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards

scholarly journals Extraction of Selected Metals from Waste Printed Circuit Boards by Bioleaching Acidophilic Bacteria

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Anna HOŁDA ◽  
Aldona KRAWCZYKOWSKA
Keyword(s):  
Metal Content ◽  
Printed Circuit Boards ◽  
Electronic Devices ◽  
Economic Benefits ◽  
Technological Innovations ◽  
Secondary Source ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Acidophilic Bacteria ◽  
Waste Printed Circuit Boards

Technological innovations and increased demand for electronic devices resulted in production of more and more waste with highmetal content. Worldwide, 50 million tons of WEEE (Waste from Electrical and Electronic Equipment) are generated each year. Giventhe metal content present in electrical waste (e-waste), it is considered to be an urban mine and, if properly treated, can serve as analternative secondary source of metals. Waste printed circuit boards (WPCBs) that constitute approx. 3-5% of WEEE by weight areof particular importance. They contain, on average, 30-40% of metals by weight, with higher purity than in minerals. With environmental and economic benefits in mind, increasing attention is being paid to the development of processes to recover metals and othervaluable materials from WPCBs. The research presented in the article aimed at assessing the usefulness of the biotechnological methodfor leaching of selected metals from e-waste. The results indicate that it is possible to mobilize metals from WPCBs using microorganisms such as Acidithiobacillus ferroxidans bacteria 

scholarly journals Current Status on Leaching Precious Metals from Waste Printed Circuit Boards

2012 ◽  
Vol 16 ◽  
pp. 560-568 ◽  
Author(s):  
Yanhua Zhang ◽  
Shili Liu ◽  
Henghua Xie ◽  
Xianlai Zeng ◽  
Jinhui Li
Keyword(s):  
Printed Circuit Boards ◽  
Precious Metals ◽  
Current Status ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards
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