engleski

Potential of biogas generation from processing grape by-products

The aim of this paper is to determine process differences of anaerobic digestion and digested residue by using different raw material input - solid by-products (bio-waste) after grape processing in wine production from varieties Žlahtina, Syrah and Debit. It was found that digested residue in all of the samples, from which all are mildly alkaline, contains a low level of dry matter, 70% of which is organic matter. Biogenic elements were present in moderate concentration while values of heavy metals were within approved limits. This analysis leads to the conclusion that digested residues of all input materials can be used in agricultural production, especially in plant production and grassland cultivation. Biogas production from wine processing by-product contributes to environmental preservation and good technological solutions in waste treatment, including waste transformation into useful energy. Therefore, biogas production from wine by-products could provide winemakers to become producers of electricity and heat energy which could reduce greenhouse-gas emissions and prevent methane emission from waste decomposition.

Grape processing, by products, biogas renewables

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