Numerous electronic devices are put out of use every day, and most of them have printed circuit boards (PCBs) that are lased and imbued with various precious and valuable metals in abundant amounts. This makes PCB an unexploited resource of the future from whom many metals such as Cu, Zn, Sn, Al, Li, Co, Nd, Pd, Pt, and Ba can be extracted. Since leaching plastic polymers can lead to the vaporization of toxic fumes, to avoid this the PCB are pyrolyzed. The PCB is crushed and the pyrolyzed product is a powder that can easily be separated into metallic and nonmetalic fractions. The aim of this work is to investigate the influence of ultrasound sonification on the nitric acid leaching of pyrolyzed printed circuit board (PPCB) powder. The impact of ultrasound sonification had a positive effect on the leaching degree for all investigated metals except for Cobalt. The biggest difference in leaching degree was for Lithium while the smallest was for platinum. Because of the complexity of the P...PCB powder system overall, the measurement of oxidation-reduction potential (ORP) didn’t yield any insight into the leaching mechanism since the measured values mainly followed the expected trend due to nitric acid degradation.
TY - CONF
AU - Jovanović, Gvozden
AU - Bugarčić, Mladen
AU - Petronijević, Nela
AU - Stopić, Srećko
AU - Marković, Branislav
AU - Stanković, Srđan
AU - Friedrich, Bernd
AU - Sokić, Miroslav
PY - 2022
UR - https://ritnms.itnms.ac.rs/handle/123456789/980
AB - Numerous electronic devices are put out of use every day, and most of them have printed circuit boards (PCBs) that are lased and imbued with various precious and valuable metals in abundant amounts. This makes PCB an unexploited resource of the future from whom many metals such as Cu, Zn, Sn, Al, Li, Co, Nd, Pd, Pt, and Ba can be extracted. Since leaching plastic polymers can lead to the vaporization of toxic fumes, to avoid this the PCB are pyrolyzed. The PCB is crushed and the pyrolyzed product is a powder that can easily be separated into metallic and nonmetalic fractions. The aim of this work is to investigate the influence of ultrasound sonification on the nitric acid leaching of pyrolyzed printed circuit board (PPCB) powder. The impact of ultrasound sonification had a positive effect on the leaching degree for all investigated metals except for Cobalt. The biggest difference in leaching degree was for Lithium while the smallest was for platinum. Because of the complexity of the PPCB powder system overall, the measurement of oxidation-reduction potential (ORP) didn’t yield any insight into the leaching mechanism since the measured values mainly followed the expected trend due to nitric acid degradation.
PB - Belgrade : Serbian society of corrosion and materials protection (UISKOZAM)
C3 - XXIII YuCorr International Conference
T1 - The effect ultrasound sonification on nitric acid leaching of pyrolyzed printed circuit board powder
EP - 94
SP - 86
ER -
@conference{
author = "Jovanović, Gvozden and Bugarčić, Mladen and Petronijević, Nela and Stopić, Srećko and Marković, Branislav and Stanković, Srđan and Friedrich, Bernd and Sokić, Miroslav",
year = "2022",
abstract = "Numerous electronic devices are put out of use every day, and most of them have printed circuit boards (PCBs) that are lased and imbued with various precious and valuable metals in abundant amounts. This makes PCB an unexploited resource of the future from whom many metals such as Cu, Zn, Sn, Al, Li, Co, Nd, Pd, Pt, and Ba can be extracted. Since leaching plastic polymers can lead to the vaporization of toxic fumes, to avoid this the PCB are pyrolyzed. The PCB is crushed and the pyrolyzed product is a powder that can easily be separated into metallic and nonmetalic fractions. The aim of this work is to investigate the influence of ultrasound sonification on the nitric acid leaching of pyrolyzed printed circuit board (PPCB) powder. The impact of ultrasound sonification had a positive effect on the leaching degree for all investigated metals except for Cobalt. The biggest difference in leaching degree was for Lithium while the smallest was for platinum. Because of the complexity of the PPCB powder system overall, the measurement of oxidation-reduction potential (ORP) didn’t yield any insight into the leaching mechanism since the measured values mainly followed the expected trend due to nitric acid degradation.",
publisher = "Belgrade : Serbian society of corrosion and materials protection (UISKOZAM)",
journal = "XXIII YuCorr International Conference",
title = "The effect ultrasound sonification on nitric acid leaching of pyrolyzed printed circuit board powder",
pages = "94-86"
}
Jovanović, G., Bugarčić, M., Petronijević, N., Stopić, S., Marković, B., Stanković, S., Friedrich, B.,& Sokić, M.. (2022). The effect ultrasound sonification on nitric acid leaching of pyrolyzed printed circuit board powder. in XXIII YuCorr International Conference
Belgrade : Serbian society of corrosion and materials protection (UISKOZAM)., 86-94.
Jovanović G, Bugarčić M, Petronijević N, Stopić S, Marković B, Stanković S, Friedrich B, Sokić M. The effect ultrasound sonification on nitric acid leaching of pyrolyzed printed circuit board powder. in XXIII YuCorr International Conference. 2022;:86-94..
Jovanović, Gvozden, Bugarčić, Mladen, Petronijević, Nela, Stopić, Srećko, Marković, Branislav, Stanković, Srđan, Friedrich, Bernd, Sokić, Miroslav, "The effect ultrasound sonification on nitric acid leaching of pyrolyzed printed circuit board powder" in XXIII YuCorr International Conference (2022):86-94.
