The effect ultrasound sonification on nitric acid leaching of pyrolyzed printed circuit board powder
Authors
Jovanović, Gvozden
Bugarčić, Mladen

Petronijević, Nela

Stopić, Srećko

Marković, Branislav

Stanković, Srđan

Friedrich, Bernd

Sokić, Miroslav

Contributors
Pavlović, MiroslavPantović Pavlović, Marijana
Pavlović, Miomir
Conference object (Published version)

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Show full item recordAbstract
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.
Keywords:
electronic waste / leaching / ultrasound / precious metals / pyrolysisSource:
XXIII YuCorr International Conference, 2022, 86-94Publisher:
- Belgrade : Serbian society of corrosion and materials protection (UISKOZAM)
Funding / projects:
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200023 (Institute of Technology of Nuclear and Other Mineral Row Materials - ITNMS, Belgrade) (RS-200023)
- Ministry of Education, Science and Technological Development of the Republic of Serbia and DAAD, Germany, for funding of the Project No.: 57513134
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Institution/Community
Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - 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.