Recovery of Rare-Earth Elements from Printed Circuit Boards by Vacuum Pyrolysis and Multiple Electrostatic Separation
Аутори
Popović, AndjelkaManojlović, Vaso
Adnadjević, Borivoj
Petrović, Jelena
Kamberović, Željko
Ranitović, Milisav
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The influence of the multi-stage electrostatic separation (ESS) of mechanically treated and magnetically separated waste electronic material and the pyrolysis of the selected ESS fraction on the distribution of metal elements (MEs), elements contained in refractory oxides (EROs), bromine (Br), and rare-earth elements (REEs) contained in waste electronic material was studied. The concentration of MEs, Br, and EROs in the tested samples was determined by X-ray fluorescence analysis, and the concentration of REEs and uranium was determined by inductively coupled plasma mass spectrometry (ICP-MS). The analysis of the distribution of elements during the multi-stage ESS showed that MEs were predominantly distributed in the conductive fraction and Br, EROs, and REEs were distributed in the nonconductive fraction. The nonconductive fraction (NC2) of the two-stage ESS was subjected to a low-temperature vacuum pyrolysis (T = 550◦C, p = 10 mbar). The distribution of pyrolysis products of the NC2 ...fraction was determined. The main products of the vacuum pyrolysis experiments were the solid residue phase (54.4 wt.%) and oils (35.4 wt.%). It has been proven that pyrolysis can significantly increase the concentration of MEs, EROs, and REEs in raw materials, thereby providing a method for cost-effectively obtaining of REEs from waste printed circuit boards.
Кључне речи:
electrostatic separation (ESS) / low-temperature vacuum pyrolysis / rare-earth elements (REEs) / waste printed circuit boards (WPCBs)Извор:
Processes, 2022, 10, 6, 1152-Издавач:
- MDPI
DOI: 10.3390/pr10061152
ISSN: 2227-9717
WoS: 00081852860000
Scopus: 2-s2.0-85132195518
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Popović, Andjelka AU - Manojlović, Vaso AU - Adnadjević, Borivoj AU - Petrović, Jelena AU - Kamberović, Željko AU - Ranitović, Milisav PY - 2022 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5162 AB - The influence of the multi-stage electrostatic separation (ESS) of mechanically treated and magnetically separated waste electronic material and the pyrolysis of the selected ESS fraction on the distribution of metal elements (MEs), elements contained in refractory oxides (EROs), bromine (Br), and rare-earth elements (REEs) contained in waste electronic material was studied. The concentration of MEs, Br, and EROs in the tested samples was determined by X-ray fluorescence analysis, and the concentration of REEs and uranium was determined by inductively coupled plasma mass spectrometry (ICP-MS). The analysis of the distribution of elements during the multi-stage ESS showed that MEs were predominantly distributed in the conductive fraction and Br, EROs, and REEs were distributed in the nonconductive fraction. The nonconductive fraction (NC2) of the two-stage ESS was subjected to a low-temperature vacuum pyrolysis (T = 550◦C, p = 10 mbar). The distribution of pyrolysis products of the NC2 fraction was determined. The main products of the vacuum pyrolysis experiments were the solid residue phase (54.4 wt.%) and oils (35.4 wt.%). It has been proven that pyrolysis can significantly increase the concentration of MEs, EROs, and REEs in raw materials, thereby providing a method for cost-effectively obtaining of REEs from waste printed circuit boards. PB - MDPI T2 - Processes T1 - Recovery of Rare-Earth Elements from Printed Circuit Boards by Vacuum Pyrolysis and Multiple Electrostatic Separation IS - 6 SP - 1152 VL - 10 DO - 10.3390/pr10061152 ER -
@article{ author = "Popović, Andjelka and Manojlović, Vaso and Adnadjević, Borivoj and Petrović, Jelena and Kamberović, Željko and Ranitović, Milisav", year = "2022", abstract = "The influence of the multi-stage electrostatic separation (ESS) of mechanically treated and magnetically separated waste electronic material and the pyrolysis of the selected ESS fraction on the distribution of metal elements (MEs), elements contained in refractory oxides (EROs), bromine (Br), and rare-earth elements (REEs) contained in waste electronic material was studied. The concentration of MEs, Br, and EROs in the tested samples was determined by X-ray fluorescence analysis, and the concentration of REEs and uranium was determined by inductively coupled plasma mass spectrometry (ICP-MS). The analysis of the distribution of elements during the multi-stage ESS showed that MEs were predominantly distributed in the conductive fraction and Br, EROs, and REEs were distributed in the nonconductive fraction. The nonconductive fraction (NC2) of the two-stage ESS was subjected to a low-temperature vacuum pyrolysis (T = 550◦C, p = 10 mbar). The distribution of pyrolysis products of the NC2 fraction was determined. The main products of the vacuum pyrolysis experiments were the solid residue phase (54.4 wt.%) and oils (35.4 wt.%). It has been proven that pyrolysis can significantly increase the concentration of MEs, EROs, and REEs in raw materials, thereby providing a method for cost-effectively obtaining of REEs from waste printed circuit boards.", publisher = "MDPI", journal = "Processes", title = "Recovery of Rare-Earth Elements from Printed Circuit Boards by Vacuum Pyrolysis and Multiple Electrostatic Separation", number = "6", pages = "1152", volume = "10", doi = "10.3390/pr10061152" }
Popović, A., Manojlović, V., Adnadjević, B., Petrović, J., Kamberović, Ž.,& Ranitović, M.. (2022). Recovery of Rare-Earth Elements from Printed Circuit Boards by Vacuum Pyrolysis and Multiple Electrostatic Separation. in Processes MDPI., 10(6), 1152. https://doi.org/10.3390/pr10061152
Popović A, Manojlović V, Adnadjević B, Petrović J, Kamberović Ž, Ranitović M. Recovery of Rare-Earth Elements from Printed Circuit Boards by Vacuum Pyrolysis and Multiple Electrostatic Separation. in Processes. 2022;10(6):1152. doi:10.3390/pr10061152 .
Popović, Andjelka, Manojlović, Vaso, Adnadjević, Borivoj, Petrović, Jelena, Kamberović, Željko, Ranitović, Milisav, "Recovery of Rare-Earth Elements from Printed Circuit Boards by Vacuum Pyrolysis and Multiple Electrostatic Separation" in Processes, 10, no. 6 (2022):1152, https://doi.org/10.3390/pr10061152 . .