Addressing Environmental Criteria and Energy Footprint in the Selection of Feedstocks for Bioenergy Production

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