Synergy of green energy technologies through critical materials circularity

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2024-03
Major/Subject
Mcode
Degree programme
Language
en
Pages
20
Series
Renewable and Sustainable Energy Reviews, Volume 191
Abstract
Synergies between technology flows is essential to balance the consumption of their related critical materials and promote a sustainable green economy transition. Using dynamics modelling, a comprehensive analysis of silicon flows applied in green energy technologies such as photovoltaic (PV) solar panels and lithium-ion batteries (LiBs) is provided. The results show that appropriate allocation of the circular flows of different silicon grades can become an effective global solution for saving material, energy and water as well as mitigating greenhouse gas (GHG) emissions. About 15 % of required global silicon could be provided by secondary production from end-of-life green energy technologies by 2030. Recovering metallurgical, solar and electronic grades of silicon from global end-of-life PVs compared to its primary production will lead to savings of 3.5 billion GJ of energy, 3.1 million m3 of water and over 65 Mt CO2 eq of GHG emissions globally by 2030. Also, synergies between material flows from PVs wasteto advance LiBs production aims to save around 38 M GJ of energy and 0.01 million m3 of water and mitigate 4 Mt CO2 eq of GHG emissions through secondary production practices by 2030. The findings outline a systematic solution for environmental sustainability of recycling by suggesting optimized integrated material flows of recovery of 50 % metallurgical, 25 % solar and 25 % electric grades of silicon from global end-of-life PVs.
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Keywords
green energy, Photovoltaic solar panels, Lithium-ion batteries, Synergy of technologies, Critical materials
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Citation
Rahimpour Golroudbary , S , Lundström , M & Wilson , B P 2024 , ' Synergy of green energy technologies through critical materials circularity ' , Renewable and Sustainable Energy Reviews , vol. 191 , 114180 . https://doi.org/10.1016/j.rser.2023.114180