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• W2892064732 abstract "The search for alternatives to fossil fuel resources relies on the use of renewable bioenergy. The objective of this research is to define the most relevant sustainability criteria in the exploitation of feedstocks for bioenergy production from a life cycle perspective. Three types of biofuels were evaluated: biogas, bioethanol and biodiesel. In addition, conventional and innovative biomass sources for bioenergy will be analysed and compared. A comprehensive literature review was conducted to identify the most suitable feedstocks for each type of biofuel in terms of environmental impacts and energy-related indicators. Many studies have identified inconsistent results (from very positive to negative environmental consequences), leading to great uncertainty on this issue. Cereal crops (wheat, maize and triticale) and animal waste are examples of feedstocks for biogas production. Sugarcane, sugar beet and their by-products (molasses and bagasse) are recognised as technologically validated biomass sources for bioethanol production. As for biodiesel, oilseeds (soybean, palm, sunflower, etc.) and cooking oil residues are possible feedstocks. The number of environmental studies related to emerging biofuel feedstocks, such as algae and jatropha for biodiesel; poplar, beech, black locust for bioethanol and macroalgae for biogas, is steadily increasing. Therefore, the processes involved in feedstock production should be properly calculated for an accurate assessment, as they play an important role in the substitution of fossil fuels. The outputs from the life cycle assessment (LCA) methodology will help to support decision-making in the analysis of alternatives and avoid misleading conclusions. The Energy Return on Investment (EROI) methodology was found to be suitable for comparing conventional and innovative biomass sources for bioenergy. The results vary considerably from one feedstock to another, due to differences in geographical distribution, agricultural practices and energy efficiency index. In many cases, it was found that the use of by-products (e.g. maize stover for bioethanol) or waste (pig slurry for biogas) as a biomass source for biofuels could have better EROI values than first-generation feedstocks due to the allocation of environmental burdens." @default.
• W2892064732 created "2018-09-27" @default.
• W2892064732 creator A5020478145 @default.
• W2892064732 creator A5060668309 @default.
• W2892064732 creator A5072694528 @default.
• W2892064732 creator A5089338552 @default.
• W2892064732 date "2018-09-01" @default.
• W2892064732 modified "2023-10-02" @default.
• W2892064732 title "Addressing Environmental Criteria and Energy Footprint in the Selection of Feedstocks for Bioenergy Production" @default.
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