Impact of Pulverization, Pretreatment and pH Regulation on Microbial Extraction of Metals from Waste Mobile Phone Printed Circuit Boards

2021 ◽  
Vol 57 (5) ◽  
pp. 675-682
Author(s):  
S. C. Thacker ◽  
N. S. Nayak ◽  
D. R. Tipre ◽  
S. R. Dave
Keyword(s):  
Mobile Phone ◽  
Printed Circuit Boards ◽  
Ph Regulation ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Extraction Of Metals

scholarly journals Green Zero-Waste Metal Extraction and Recycling from Printed Circuit Boards

2021 ◽  
Vol 5 (1) ◽  
pp. 39
Author(s):  
Halimeh Askari Sabzkoohi ◽  
Georgios Kolliopoulos
Keyword(s):  
Circular Economy ◽  
Printed Circuit Boards ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Metal Extraction ◽  
Circuit Boards ◽  
Acid Base ◽  
Zero Waste ◽  
Printed Circuit ◽  
Extraction Of Metals

The development of a truly circular economy necessitates the recovery and recycling of resources from secondary streams. In this work, we studied the extraction of metals from printed circuit boards (PCBs) using choline chloride: ethylene glycol deep eutectic solvents: Cu, Ni, Zn, and Sn were selectively extracted from the PCBs, with >75% extraction after 72 h for Cu, Ni, and Sn, and circa. 45% extraction for Zn. This solvometallurgical approach promises to minimize the use of water and acid/base reagents in processing. The results show a considerable ability to compete with current methods of metal extraction and therefore generate a strong potential to attain the goal of a sustainable circular economy via zero-waste green urban mining.

Recovery of base metals, silicon and fluoride ions from mobile phone printed circuit boards after leaching with hydrogen fluoride and hydrogen peroxide mixtures

2018 ◽  
Vol 78 ◽  
pp. 781-788 ◽  
Author(s):  
Walner Costa Silva ◽  
Roger de Souza Corrêa ◽  
Calvin Sampaio Moreira da Silva ◽  
Júlio Carlos Afonso ◽  
Rubens Souza da Silva ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Mobile Phone ◽  
Hydrogen Fluoride ◽  
Printed Circuit Boards ◽  
Base Metals ◽  
Circuit Boards ◽  
Fluoride Ions ◽  
Printed Circuit

Selective recovery of Copper from waste mobile phone printed circuit boards using Sulphuric acid leaching

2018 ◽  
Vol 5 (10) ◽  
pp. 21698-21702 ◽  
Author(s):  
Md. Sohrab Hossain ◽  
Ahmad Naim Ahmad Yahaya ◽  
Lily Suhaila Yacob ◽  
Mohd Zulkhairi Abdul Rahim ◽  
Nor Nadiah Mohamad Yusof ◽  
...  
Keyword(s):  
Mobile Phone ◽  
Sulphuric Acid ◽  
Printed Circuit Boards ◽  
Acid Leaching ◽  
Circuit Boards ◽  
Selective Recovery ◽  
Printed Circuit

Optimizing the thiosulfate leaching of gold from printed circuit boards of discarded mobile phone

2014 ◽  
Vol 149 ◽  
pp. 118-126 ◽  
Author(s):  
Vinh Hung Ha ◽  
Jae-chun Lee ◽  
Trung Hai Huynh ◽  
Jinki Jeong ◽  
B.D. Pandey
Keyword(s):  
Mobile Phone ◽  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Thiosulfate Leaching
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