Characteristics of Metals Leached from Waste Printed Circuit Boards Using Acidithiobacillus ferrooxidans
Published: |
June 7, 2021 |
Author: |
Jinsung An |
Abstract: |
The aim of this study was to compare leaching characteristics of metals from printed circuit boards (PCBs), taken from waste electrical and electronic equipment in the presence and in the absence of the iron-oxidizing bacteria, Acidithiobacillus ferrooxidans. A. ferrooxidans not only increases the leached concentration of Cu from the PCBs, but also inhibits the components of the 0K medium and leached Cu from forming precipitates such as libethenite (Cu2(PO4)(OH)), thereby assisting Cu recovery from the PCBs. In addition, the leached concentration of Pb from PCBs decreased in the presence of A. ferrooxidans, due to Pb forming amorphous precipitates. It is expected that Pb is not highly toxic to A. ferrooxidans. Consequently, A. ferrooxidans can be used as a cost-effective and environmentally friendly way to leach out valuable metals from PCBs as low-grade urban ore.... |
|
Company Information:
More SMT / PCB assembly technical articles »
- Jul 15, 2024 - Transforming LED Manufacturing: I.C.T Engineers Set Up Complete Production Line in Tajikistan | I.C.T ( Dongguan ICT Technology Co., Ltd. )
- Jun 20, 2024 - Case study: Precise Coating on Electronic Hearing Devices | ASYMTEK Products | Nordson Electronics Solutions
- Mar 19, 2024 - What is Underfill | GPD Global
- Mar 19, 2024 - Made in Japan: Solder Paste Jet Dispensing Machine | I.C.T ( Dongguan ICT Technology Co., Ltd. )
- Feb 26, 2024 - Precision Control in Electronic Assembly: Selective Wave Soldering Machine | I.C.T ( Dongguan ICT Technology Co., Ltd. )
- Browse Technical Library »
Characteristics of Metals Leached from Waste Printed Circuit Boards Using Acidithiobacillus ferrooxidans article has been viewed 376 times