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Developments and Issues in Renewable Ecofuels and Feedstocks

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  • Andrea G. Capodaglio

    (Department of Civil Engineering and Architecture, University of Pavia, 27100 Pavia, Italy)

Abstract

Ecofuels and their feedstock come in three main product classes: electrofuels (e-Fuels), biofuels, and non-biowaste-derived fuels. Ecofuels originate from non-fossil sources, derived from circular raw materials such as non-food organic waste, renewable hydrogen, and captured CO 2 through a rapid process of carbon fixation. Proposed regulation drafts under discussion indicate that new fuels would need to reach a substantial degree of climate neutrality. The manufacture of all ecofuels, however, requires energy input to accomplish the conversion of the initial feedstock; their climate neutrality claims stem from the use of renewable electric energy and/or biomasses in the production process, but fossil fuels are still the main primary sources of global (and the EU’s) electric power, and most biofuels consumed in the EU transport mix are still crop-based, with potential conflicts with food and land use. Furthermore, entirely neglecting GHG emissions from renewable energy generation is scientifically debatable, as the impact of the energy (and the related GHG emissions) embedded in the materials used to build renewable energy facilities is small, but not nil. The paper reports ecofuel trends according to the above-mentioned originating technologies and discusses the issues related to their development.

Suggested Citation

  • Andrea G. Capodaglio, 2024. "Developments and Issues in Renewable Ecofuels and Feedstocks," Energies, MDPI, vol. 17(14), pages 1-29, July.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:14:p:3560-:d:1438833
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    References listed on IDEAS

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