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Characterization of waste computers processors and proposal of the metals valorization process

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2021
bitstream_30562.pdf (2.456Mb)
Authors
Milošević, Anđela
Kamberović, Željko
Manojlović, Vaso
Djokić, Jovana
Gajić, Nataša
Conference object (Published version)
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Abstract
Given the constant development of the high-tech industry, consumer-oriented societies, and reduced electronic equipment's lifespan, the outcome of growth and accumulation of waste is inevitable. Yet, specific electronic equipment components, such as central processing unit (CPU), are carriers of valuable metals, primarily precious, so waste electronic equipment become of recyclable interest. However, inadequate technological processing, particularly in the informal recycling sectors, leads to valuable metals losses. This approach has a negative economic and environmental impact: valuable material is usually considered as waste and landfilled with metals trapped in it, while due to increasing demand, metals are being exploited from natural resources. In this sense, there is an unquestionable need for an innovative recycling approach and adequate waste management that would lead to i) the decrease of natural exploitation, ii) the removal of waste accumulated in the environment, and iii)... better utilization of material flows. The aim of this paper is an evaluation of the potential of waste CPU acid leaching residue as secondary material and the proposal of the innovative design of an adequate technological process for CPU recycling and recovery of valuable metals while minimizing their loss. The first part of the study included the characterization of the CPU acid leaching residue. Results of the research point out that precious metals content is significant, and material could be further exploited as secondary raw material. However, further optimization of process parameters is needed to achieve the most efficient valorization. A conceptual proposal of the technological scheme for metal recovery is given in the second part, considering two approaches: hydro- and pyrometallurgical methods. An innovative approach for recycling and waste management can contribute to the ultimate goal nowadays globally set as an imperative: achieving a circular economy through improved material flows management.

Keywords:
electronic waste / central processing unit / recycling / precious metals / circular economy
Source:
First Scientific Conference with International Participation, Circular Economy and Environmental Labelling, CEEL 2021, Book of Abstracts, Novi Sad, 29th January 2021, 2021, 5-6
Publisher:
  • Novi Sad : Faculty of Technical Sciences

ISBN: 978-86-6022-311-3

[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_cherry_5367
URI
http://cherry.chem.bg.ac.rs/handle/123456789/5367
Collections
  • Primarni podaci
Institution/Community
Inovacioni centar
TY  - CONF
AU  - Milošević, Anđela
AU  - Kamberović, Željko
AU  - Manojlović, Vaso
AU  - Djokić, Jovana
AU  - Gajić, Nataša
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5367
AB  - Given the constant development of the high-tech industry, consumer-oriented societies, and reduced electronic equipment's lifespan, the outcome of growth and accumulation of waste is inevitable. Yet, specific electronic equipment components, such as central processing unit (CPU), are carriers of valuable metals, primarily precious, so waste electronic equipment become of recyclable interest. However, inadequate technological processing, particularly in the informal recycling sectors, leads to valuable metals losses. This approach has a negative economic and environmental impact: valuable material is usually considered as waste and landfilled with metals trapped in it, while due to increasing demand, metals are being exploited from natural resources.
In this sense, there is an unquestionable need for an innovative recycling approach and adequate waste management that would lead to i) the decrease of natural exploitation, ii) the removal of waste accumulated in the environment, and iii) better utilization of material flows.
The aim of this paper is an evaluation of the potential of waste CPU acid leaching residue as secondary material and the proposal of the innovative design of an adequate technological process for CPU recycling and recovery of valuable metals while minimizing their loss. The first part of the study included the characterization of the CPU acid leaching residue. Results of the research point out that precious metals content is significant, and material could be further exploited as secondary raw material. However, further optimization of process parameters is needed to achieve the most efficient valorization. A conceptual proposal of the technological scheme for metal recovery is given in the second part, considering two approaches: hydro- and pyrometallurgical methods.
An innovative approach for recycling and waste management can contribute to the ultimate goal nowadays globally set as an imperative: achieving a circular economy through improved material flows management.
PB  - Novi Sad : Faculty of Technical Sciences
C3  - First Scientific Conference with International Participation, Circular Economy and Environmental Labelling, CEEL 2021, Book of Abstracts, Novi Sad, 29th January 2021
T1  - Characterization of waste computers processors and proposal of the metals valorization process
SP  - 5
EP  - 6
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5367
ER  - 
@conference{
author = "Milošević, Anđela and Kamberović, Željko and Manojlović, Vaso and Djokić, Jovana and Gajić, Nataša",
year = "2021",
abstract = "Given the constant development of the high-tech industry, consumer-oriented societies, and reduced electronic equipment's lifespan, the outcome of growth and accumulation of waste is inevitable. Yet, specific electronic equipment components, such as central processing unit (CPU), are carriers of valuable metals, primarily precious, so waste electronic equipment become of recyclable interest. However, inadequate technological processing, particularly in the informal recycling sectors, leads to valuable metals losses. This approach has a negative economic and environmental impact: valuable material is usually considered as waste and landfilled with metals trapped in it, while due to increasing demand, metals are being exploited from natural resources.
In this sense, there is an unquestionable need for an innovative recycling approach and adequate waste management that would lead to i) the decrease of natural exploitation, ii) the removal of waste accumulated in the environment, and iii) better utilization of material flows.
The aim of this paper is an evaluation of the potential of waste CPU acid leaching residue as secondary material and the proposal of the innovative design of an adequate technological process for CPU recycling and recovery of valuable metals while minimizing their loss. The first part of the study included the characterization of the CPU acid leaching residue. Results of the research point out that precious metals content is significant, and material could be further exploited as secondary raw material. However, further optimization of process parameters is needed to achieve the most efficient valorization. A conceptual proposal of the technological scheme for metal recovery is given in the second part, considering two approaches: hydro- and pyrometallurgical methods.
An innovative approach for recycling and waste management can contribute to the ultimate goal nowadays globally set as an imperative: achieving a circular economy through improved material flows management.",
publisher = "Novi Sad : Faculty of Technical Sciences",
journal = "First Scientific Conference with International Participation, Circular Economy and Environmental Labelling, CEEL 2021, Book of Abstracts, Novi Sad, 29th January 2021",
title = "Characterization of waste computers processors and proposal of the metals valorization process",
pages = "5-6",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5367"
}
Milošević, A., Kamberović, Ž., Manojlović, V., Djokić, J.,& Gajić, N.. (2021). Characterization of waste computers processors and proposal of the metals valorization process. in First Scientific Conference with International Participation, Circular Economy and Environmental Labelling, CEEL 2021, Book of Abstracts, Novi Sad, 29th January 2021
Novi Sad : Faculty of Technical Sciences., 5-6.
https://hdl.handle.net/21.15107/rcub_cherry_5367
Milošević A, Kamberović Ž, Manojlović V, Djokić J, Gajić N. Characterization of waste computers processors and proposal of the metals valorization process. in First Scientific Conference with International Participation, Circular Economy and Environmental Labelling, CEEL 2021, Book of Abstracts, Novi Sad, 29th January 2021. 2021;:5-6.
https://hdl.handle.net/21.15107/rcub_cherry_5367 .
Milošević, Anđela, Kamberović, Željko, Manojlović, Vaso, Djokić, Jovana, Gajić, Nataša, "Characterization of waste computers processors and proposal of the metals valorization process" in First Scientific Conference with International Participation, Circular Economy and Environmental Labelling, CEEL 2021, Book of Abstracts, Novi Sad, 29th January 2021 (2021):5-6,
https://hdl.handle.net/21.15107/rcub_cherry_5367 .

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