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Restoring the Reactivity of Organic Acid Solution Used for Silver Recovery from Solar Cells by Fractional Distillation

1
Separation and Conversion Materials Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea
2
Photovoltaic Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea
*
Author to whom correspondence should be addressed.
Sustainability 2019, 11(13), 3659; https://0-doi-org.brum.beds.ac.uk/10.3390/su11133659
Received: 30 May 2019 / Revised: 30 June 2019 / Accepted: 1 July 2019 / Published: 3 July 2019
Methanesulfonic acid (MSA) is used to recover silver (Ag) from solar cells by adding an oxidizing agent. It is possible to regenerate by substituting of H+ for Ag+, and thus it can be reused for additional reactions. However, MSA is highly hygroscopic, and as an oxidizing agent can easily decompose in the acidic environment during Ag extraction, leading to dilution due to the formation of H2O. This H2O in the MSA solution hinders the Ag extraction. In this study, we present a fractional distillation process for restoring the reactivity of reused MSA solutions by reducing the H2O content. Our results showed that the reactivity of the separated MSA was restored and Ag could be recovered from the solar cell. View Full-Text
Keywords: solar cell; silver; methanesulfonic acid; fractional distillation solar cell; silver; methanesulfonic acid; fractional distillation
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MDPI and ACS Style

Lee, J.-K.; Lee, J.-S.; Ahn, Y.-S.; Kang, G.-H. Restoring the Reactivity of Organic Acid Solution Used for Silver Recovery from Solar Cells by Fractional Distillation. Sustainability 2019, 11, 3659. https://0-doi-org.brum.beds.ac.uk/10.3390/su11133659

AMA Style

Lee J-K, Lee J-S, Ahn Y-S, Kang G-H. Restoring the Reactivity of Organic Acid Solution Used for Silver Recovery from Solar Cells by Fractional Distillation. Sustainability. 2019; 11(13):3659. https://0-doi-org.brum.beds.ac.uk/10.3390/su11133659

Chicago/Turabian Style

Lee, Jun-Kyu, Jin-Seok Lee, Young-Soo Ahn, and Gi-Hwan Kang. 2019. "Restoring the Reactivity of Organic Acid Solution Used for Silver Recovery from Solar Cells by Fractional Distillation" Sustainability 11, no. 13: 3659. https://0-doi-org.brum.beds.ac.uk/10.3390/su11133659

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