首页|The Way Towards Zero Carbon Emissions in Aluminum Electrolysis
The Way Towards Zero Carbon Emissions in Aluminum Electrolysis
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The global community has set a goal of carbon neutrality by 2050。 Almost one-fourth of the global emissions， attributed to direct emissions from industrial processes， must be addressed by developing zero-carbon alternatives for each process， including the production of aluminum。 Several companies and research institutions are working on aluminum electrolysis using oxygen-evolving inert anodes， and recent developments are reported to be quite promising。 For existing smelters， carbon capture and sequestration may become a realistic alternative， depending upon the successful adaptation of the flue-gas system enabling increased concentration of CO_2 in the flue gas。 A third alternative is electrolysis of aluminum chloride， keeping chlorine and carbon in separate recycling loops。 This paper gives a review of the efforts to date， from industry and academia， to decarbonize the electrolysis of aluminum。 The development of the largest part of the carbon footprint， arising from the production of the electrical energy used from fossil sources， is also discussed。
Aluminum smeltingGreenhouse gas emissionsSpecific emissionsCarbon footprintSustainabilityDecarbonization
Gudrun Saevarsdottir、Sai Krishna Padamata、Brandon Nicholas Velasquez、Halvor Kvande
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Department of Engineering, Reykjavik University, 101 Reykjavik, Iceland
Previously: The Norwegian University of Science and Technology, Trondheim, Norway
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