engleski

Analysis of greenhouse gas emissions reduction from biogas production based on agricultural residues and industrial by-products

Bioenergy, especially biogas produced through anaerobic digestion of renewable feedstocks, is considered to be one of the highly promising alternatives to fossil fuels. The number of European biogas plants has increased steadily over the past decade, due to supportive policy. However, some of these policies resulted in the expansion of food and feed crops dedicated to biogas production, which has caused concerns about the sustainability of biogas production. Recovery of biogas from agricultural residues and livestock production, as well as from industrial by-products is an acknowledged greenhouse gas mitigation technology, for the cases when their utilization archives a certain level of greenhouse gases savings, as reflected by the revised Renewable Energy Directive, which entered into force in December 2018. The aim of this work is to perform an analysis of greenhouse gas emissions reduction for numerous residues from agricultural and livestock production, as well as industrial by-products. The results define the maximum distance for which biogas produces from considered feedstocks achieve greenhouse gas emissions savings of 80 %, compared to fossil fuels. The obtained results can be used for defining sustainable alternatives which should replace currently dominant maize silage in biogas production.

GHG savings, biogas, agricultural residues, industrial residues

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