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. 2023 Feb 27;123(5):2436–2608. doi: 10.1021/acs.chemrev.2c00799

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© 2023 The Author. Published by American Chemical Society

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(a) Energy consumption in gigajoule (GJ) per tonne of metal produced. (b) Greenhouse gas emissions in tonnes CO₂eq per tonne of metal produced together with the individual process steps.²⁰⁶ NPI, nickel pig iron. The figure is reproduced with permission from ref (206) under an open access Creative Commons CC BY license. Copyright 2020, MDPI.