Carbon balance of biogas production from maize in Latvian conditions
Vaata/ Ava
Aasta
2021Autor
Bumbiere, K.
Gancone, A.
Pubule, J.
Blumberga, D.
Metadata
Näita täielikku nimetuse kirjetKokkuvõte
Production of biogas using bioresources of agricultural origin plays an important role
in Europe’s energy transition to sustainability. However, many substrates have been denounced
in the last years as a result of differences of opinion on its impact on the environment, while
finding new resources for renewable energy is a global issue. The aim of the study is to use a
carbon balance method to evaluate the real impact on the atmosphere by carrying out a carbon
balance to objectively quantify naturally or anthropogenically added or removed carbon dioxide
from the atmosphere. This study uses Latvian data to determine the environmental impact of
biogas production depending on the choice of substrate, in this case from specially grown maize
silage. GHG emissions from specially grown maize use and cultivation (including the use of
diesel fuel, crop residue and nitrogen fertilizer incorporation, photosynthesis), biogas production
leaks, as well as digestate emissions (including digestate emissions and also saved nitrogen
emissions by the use of digestate) are taken into account when compiling the carbon balance of
maize. The results showed that biogas production from specially grown maize can save
1.86 kgCO2eq emissions per 1 m3 of produced biogas.