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The Primary and Secondary Production of Germanium: A Life-Cycle Assessment of Different Process Alternatives

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Abstract

Germanium is a semiconducting metalloid element used in optical fibers, catalysis, infrared optics, solar cells, and light-emitting diodes. The need for Ge in these markets is considered to increase by a steady ~1% on a yearly basis. Its economic importance, coupled with the identified supply risks, has led to the classification of germanium as a critical raw material within Europe. Since the early 1950s, Umicore Electro-Optic Materials has supplied germanium-based materials solutions to its markets around the world. Umicore extracts germanium from a wide range of refining and recycling feeds. The main objectives of this study were to quantify the potential environmental impacts of the production of germanium from production scraps from the photovoltaic industry and to compare them with the potential impacts of the primary production of germanium from coal. The data related to the secondary production are Umicore-specific data. Environmental impact scores have been calculated for the impact categories recommended by the International reference life cycle data system. The comparison of the primary and secondary production highlights the benefit linked to the recycling of metals.

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Acknowledgements

The authors acknowledge financial support of the Institute for the Promotion of Innovation through Science and Technology in Flanders (IWT-Vlaanderen). The authors would like to thank the CIRAIG for the comments and advice provided via the critical review of the LCA work.

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Correspondence to Maarten Schurmans.

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Robertz, B., Verhelle, J. & Schurmans, M. The Primary and Secondary Production of Germanium: A Life-Cycle Assessment of Different Process Alternatives. JOM 67, 412–424 (2015). https://doi.org/10.1007/s11837-014-1267-6

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  • DOI: https://doi.org/10.1007/s11837-014-1267-6

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