Recovery of valuable and toxic metals from crystalline-Si modules

Wen Hsi Huang; Woo Jung Shin; Laidong Wang; Meng Tao

doi:10.1109/PVSC.2016.7750344

Recovery of valuable and toxic metals from crystalline-Si modules

Wen Hsi Huang, Woo Jung Shin, Laidong Wang, Meng Tao

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

12 Scopus citations

Abstract

Valuable and toxic metals including Ag, Pb, Sn and Cu can be recovered from end-of-life Si solar modules. This study presents the recovery of Ag, Pb, Sn and Cu from a simulated leach solution of crystalline-Si modules. 11.4% HNO₃ is used as the leach solution. Ag, Pb, Sn and Cu pellets are dissolved in the solution to simulate the metals from front contacts and soldered wires in Si modules. Sn precipitates in the solution as SnO₂, which can be separated by filtration or sedimentation. Voltammetry reveals the reduction potentials for Ag and Cu. It is demonstrated that 3-electrode sequential electrowinning can extract Ag and Cu one by one from the solution. The recovery rates of Ag and Cu are 74% and 83%, respectively. Toxic Pb is deposited on the anode as PbO₂ during Cu recovery. The purity of the extracted metals is above 99%.

Original language	English (US)
Title of host publication	2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	3602-3605
Number of pages	4
ISBN (Electronic)	9781509027248
DOIs	https://doi.org/10.1109/PVSC.2016.7750344
State	Published - Nov 18 2016
Event	43rd IEEE Photovoltaic Specialists Conference, PVSC 2016 - Portland, United States Duration: Jun 5 2016 → Jun 10 2016

Publication series

Name	Conference Record of the IEEE Photovoltaic Specialists Conference
Volume	2016-November
ISSN (Print)	0160-8371

Other

Other	43rd IEEE Photovoltaic Specialists Conference, PVSC 2016
Country/Territory	United States
City	Portland
Period	6/5/16 → 6/10/16

Keywords

crystalline-Si solar cells
electrowinning
end-of-life Si solar cells
recycling
voltammetry

ASJC Scopus subject areas

Control and Systems Engineering
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

Access to Document

10.1109/PVSC.2016.7750344

Cite this

Huang, W. H., Shin, W. J., Wang, L., & Tao, M. (2016). Recovery of valuable and toxic metals from crystalline-Si modules. In 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016 (pp. 3602-3605). Article 7750344 (Conference Record of the IEEE Photovoltaic Specialists Conference; Vol. 2016-November). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2016.7750344

Recovery of valuable and toxic metals from crystalline-Si modules. / Huang, Wen Hsi; Shin, Woo Jung; Wang, Laidong et al.
2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016. Institute of Electrical and Electronics Engineers Inc., 2016. p. 3602-3605 7750344 (Conference Record of the IEEE Photovoltaic Specialists Conference; Vol. 2016-November).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Huang, WH, Shin, WJ, Wang, L & Tao, M 2016, Recovery of valuable and toxic metals from crystalline-Si modules. in 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016., 7750344, Conference Record of the IEEE Photovoltaic Specialists Conference, vol. 2016-November, Institute of Electrical and Electronics Engineers Inc., pp. 3602-3605, 43rd IEEE Photovoltaic Specialists Conference, PVSC 2016, Portland, United States, 6/5/16. https://doi.org/10.1109/PVSC.2016.7750344

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abstract = "Valuable and toxic metals including Ag, Pb, Sn and Cu can be recovered from end-of-life Si solar modules. This study presents the recovery of Ag, Pb, Sn and Cu from a simulated leach solution of crystalline-Si modules. 11.4% HNO3 is used as the leach solution. Ag, Pb, Sn and Cu pellets are dissolved in the solution to simulate the metals from front contacts and soldered wires in Si modules. Sn precipitates in the solution as SnO2, which can be separated by filtration or sedimentation. Voltammetry reveals the reduction potentials for Ag and Cu. It is demonstrated that 3-electrode sequential electrowinning can extract Ag and Cu one by one from the solution. The recovery rates of Ag and Cu are 74% and 83%, respectively. Toxic Pb is deposited on the anode as PbO2 during Cu recovery. The purity of the extracted metals is above 99%.",

keywords = "crystalline-Si solar cells, electrowinning, end-of-life Si solar cells, recycling, voltammetry",

author = "Huang, {Wen Hsi} and Shin, {Woo Jung} and Laidong Wang and Meng Tao",

note = "Publisher Copyright: {\textcopyright} 2016 IEEE. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.; 43rd IEEE Photovoltaic Specialists Conference, PVSC 2016 ; Conference date: 05-06-2016 Through 10-06-2016",

year = "2016",

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N2 - Valuable and toxic metals including Ag, Pb, Sn and Cu can be recovered from end-of-life Si solar modules. This study presents the recovery of Ag, Pb, Sn and Cu from a simulated leach solution of crystalline-Si modules. 11.4% HNO3 is used as the leach solution. Ag, Pb, Sn and Cu pellets are dissolved in the solution to simulate the metals from front contacts and soldered wires in Si modules. Sn precipitates in the solution as SnO2, which can be separated by filtration or sedimentation. Voltammetry reveals the reduction potentials for Ag and Cu. It is demonstrated that 3-electrode sequential electrowinning can extract Ag and Cu one by one from the solution. The recovery rates of Ag and Cu are 74% and 83%, respectively. Toxic Pb is deposited on the anode as PbO2 during Cu recovery. The purity of the extracted metals is above 99%.

AB - Valuable and toxic metals including Ag, Pb, Sn and Cu can be recovered from end-of-life Si solar modules. This study presents the recovery of Ag, Pb, Sn and Cu from a simulated leach solution of crystalline-Si modules. 11.4% HNO3 is used as the leach solution. Ag, Pb, Sn and Cu pellets are dissolved in the solution to simulate the metals from front contacts and soldered wires in Si modules. Sn precipitates in the solution as SnO2, which can be separated by filtration or sedimentation. Voltammetry reveals the reduction potentials for Ag and Cu. It is demonstrated that 3-electrode sequential electrowinning can extract Ag and Cu one by one from the solution. The recovery rates of Ag and Cu are 74% and 83%, respectively. Toxic Pb is deposited on the anode as PbO2 during Cu recovery. The purity of the extracted metals is above 99%.

KW - crystalline-Si solar cells

KW - electrowinning

KW - end-of-life Si solar cells

KW - recycling

KW - voltammetry

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Recovery of valuable and toxic metals from crystalline-Si modules

Abstract

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Keywords

ASJC Scopus subject areas

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