Separation of Valuable Metal from Waste Photovoltaic Ribbon through Extraction and Precipitation#

Wei-Sheng  Chen; Yen-Jung Chen; Kai-Chieh Yueh

doi:10.7844/kirr.2020.29.2.69

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2020 Vol.29, Issue 2 Preview Page

Research Paper

Separation of Valuable Metal from Waste Photovoltaic Ribbon through Extraction and Precipitation^#

30 April 2020. pp. 69-77

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Abstract

With rapid increasing production and installation, recycling of photovoltaic modules has become the main issue. According to the research, the accumulation of waste modules will reach to 8600 tons in 2030. Moreover, Crystalline-silicon (c-Si) Photovoltaic modules account for more than 90% of the waste. C-Si PV modules contain 1.3% of weight of photovoltaic ribbon inside which contains the most of lead, tin and copper in the PV modules, which would cause environmental and humility problem. This study provided a valuable metal separation process for PV ribbons. Ribbons content 82.1% of Cu, 8.9% of Sn, 5.2% of Pb, and 3.1% of Ag. All of them were leached by 3M of hydrochloric acid in the optimal condition. Ag was halogenated to AgCl and precipitated. Cu ion was extracted and separated from Pb and Sn by Lix984N then stripped by 3M H2SO4. The effect of the optimal parameters of extraction was also studied in this essay. The maximum extraction efficiency of Cu ion was 99.64%. The separation condition of Pb and Sn were obtained by adjusting the pH value to 4 thought ammonia to precipitate and separate Pb and Sn. The recovery of Pb and Sn can reach 99%.

Keywords

photovoltaic ribbon

hydrometallurgy

leaching

liquid-liquid extraction

Lix984N

recycling

최근 급격히 증가하는 생산량과 설치로 태양광모듈의 재활용이 주요 이슈가 되고 있다. 연구 결과에 따르면, 폐 태양광모듈의 양은 2030년에는 약 8600톤에 달할 것으로 예상되며, 결정질 실리콘 태양광 모듈은 그 가운데 약 90%에 달할 것으로 예상하고 있다. 결정질 실리콘 태양광 모듈은 중량비로 약 1.3%의 태양광 리본을 함유하며, 이 태양광 리본은 태양광 모듈에 함유된 대다수의 납, 주석, 구리를 포함하는 것으로 알려져 있다. 이에 본 연구는 태양광 리본으로부터 유가금속을 분리하고자 시도되었다. 샘플 분석 결과 태양광 리본은 약 82.1% 구리, 8.9% 주석, 5.2% 납, 그리고 3.1% 은을 포함하는 것으로 확인되었다. 침출 실험은 3M 염산을 사용하였고, 침출 된 은 이온은 염화은의 할로겐 화합물로 회수되었다. 구리의 경우, Lix984N을 이용해 납과 주석으로부터 분리되었고, 3M의 황산을 이용해 스트리핑 되었다. 한편, 최적 조건하에서 구리 침출 효율은 약 99.64%이었다. 납과 주석의 경우, 수소이온농도 조절을 통해 분리될 수 있었으며, 이 경우, 회수율은 약 99%이었다.

키워드

태양광 리본

습식제련

침출

용매추출

Lix984N

재활용

References

T. Doi, I. Tsuda, H.Unagida, et al., 2001 : Experimental study on PV module recycling with organic solvent method, Sol. Energy Mater. Sol. Cells, 67(1-4), pp.397-403.

10.1016/S0927-0248(00)00308-1

S. Weckend, A. Wade and G. Heath, 2016 : End-of-life management: Solar photovoltaic panels, IRENA and IEA-PVPS.

10.2172/1561525

Jin-Seok Lee, Young-Soo Ahn, Gi-Hwan Kang, et al., 2016 : Recovery of 4N-grade copper from photovoltaic ribbon in spent solar module, Materials Technology, 31(10), pp.574-579.

10.1080/10667857.2016.1147139

S.l. Kim, J.C. Lee, K.S. Lee, et al., 2014 : Separation of tin, silver and copper from waste pb-free solder using hydrochloric acid leaching with hydrogen peroxide, Materials Transactions, 55(12), pp.1885-1889.

10.2320/matertrans.M2014289

G.H. Moon and K.K. Yoo, 2017 : Separation of Cu, Sn, Pb from photovoltaic ribbon by hydrochloric acid leaching with stannic ion followed by solvent extraction, Hydrometallurgy, 171, pp.123-127.

10.1016/j.hydromet.2017.05.003

W.S. Chen, Y.J. Chen and Y.A. Chen, 2019 : The application of organic solvents and thermal process for eliminating EVA resin layer from waste photovoltaic modules, IOP Conf. Ser: Earth Environ.

10.1088/1755-1315/291/1/012012

M. Ghanbari, H. Naderi and M. Torabi, 2018 : Comparison of various extractants for recovery of copper from sarcheshmeh chalcopyrite concentrat ammonia/ammonium carbonate leaching, Journal of Mining and Environment, 9(2), pp.393-402.

B.Q. Xiao, F. Jiang, S. Yin, et al., 2018 : Fast separation of Cu²⁺ and Ni²⁺ in sulfate solution by Lix984N extraction using a microchannel chip, Green Process. Synth., 7(3), pp.207-216.

10.1515/gps-2016-0224

Dong Y.N., 2015 : Determination of tin in copper ore and lead-Zinc ore by atomic fluorescence spectrometry with co-precipitation separation, Physical Testing and Chemical Analysis, pp.54-58.

Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Journal of the Korean Institute of Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 29
No :2
Pages :69-77
Received Date : 2019-12-06
Revised Date : 2020-02-20
Accepted Date : 2020-03-16
DOI :https://doi.org/10.7844/kirr.2020.29.2.69

Resources Recycling ISSN:2765-3439(Print) 2765-3447(Online) 자원리싸이클링

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