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 proceedingConference contribution

2 Citations (Scopus)

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 languageEnglish (US)
Title of host publication2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3602-3605
Number of pages4
Volume2016-November
ISBN (Electronic)9781509027248
DOIs
StatePublished - Nov 18 2016
Event43rd IEEE Photovoltaic Specialists Conference, PVSC 2016 - Portland, United States
Duration: Jun 5 2016Jun 10 2016

Other

Other43rd IEEE Photovoltaic Specialists Conference, PVSC 2016
CountryUnited States
CityPortland
Period6/5/166/10/16

Fingerprint

Crystalline materials
Recovery
Metals
Electrowinning
Voltammetry
Sedimentation
Contacts (fluid mechanics)
Precipitates
Anodes
Wire
Electrodes

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

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 (Vol. 2016-November, pp. 3602-3605). [7750344] 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; Tao, Meng.

2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016. Vol. 2016-November Institute of Electrical and Electronics Engineers Inc., 2016. p. 3602-3605 7750344.

Research output: Chapter in Book/Report/Conference proceedingConference 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. vol. 2016-November, 7750344, 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
Huang WH, Shin WJ, Wang L, Tao M. Recovery of valuable and toxic metals from crystalline-Si modules. In 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016. Vol. 2016-November. Institute of Electrical and Electronics Engineers Inc. 2016. p. 3602-3605. 7750344 https://doi.org/10.1109/PVSC.2016.7750344
Huang, Wen Hsi ; Shin, Woo Jung ; Wang, Laidong ; Tao, Meng. / Recovery of valuable and toxic metals from crystalline-Si modules. 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016. Vol. 2016-November Institute of Electrical and Electronics Engineers Inc., 2016. pp. 3602-3605
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