4 research outputs found
The role of energy management in the agricultural sector: key prerequisites and impacts
Received: January 30th, 2023 ; Accepted: April 8th, 2023 ; Published: May 3rd
, 2023 ; Correspondence: [email protected] is one of the most energy-consuming sectors in the EUâs economy.
Implementing sustainable agriculture to reduce GHG emissions and increase energy efficiency
through energy management is a crucial strategy to tackle climate change. In this paper, the role
of energy management in the agricultural sector is studied, and experiences from Europe and the
world have been considered. Literature analysis regarding the chosen topic has been conducted,
including the methodology of energy management plan development and its implementation in
the case study of Latvia. Data from Latviaâs agricultural and other sectors have been analysed
and compared. Latviaâs Inventory Report regarding GHG emissions in the agricultural sector was
reviewed, and all emission sources in the agricultural sector were highlighted. The primary
purpose of the study is to find out if energy management were introduced in an agricultural
company, what would be the potential GHG emission, energy savings and additional advantages.
Two companies working in Latvia were surveyed, and potential emission and energy
consumption reduction measures in agriculture that would be applied to companies were
developed. The research showed that by implementing the basic principles of energy
management, it would be possible to reduce the average energy consumption by 17%. If measures
are applied to reduce GHG emissions from agricultural companies, the average emissions would
be reduced by 43%
Carbon balance of biogas production from maize in Latvian conditions
Received: January 31st, 2021 ; Accepted: March 28th, 2021 ; Published: May 19th, 2021 ; Correspondence: [email protected] of biogas using bioresources of agricultural origin plays an important role
in Europeâs 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
Life cycle assessment of fish feed for oil alternatives - environmental impact of microalgae, rapeseed and fish oil
Received: January 31st, 2023 ; Accepted: May 7th, 2023 ; August 17th, 2023 ; Correspondence: [email protected] is an inexpensive source of high-quality protein as well as valuable micronutrients.
Increasing the volume of fish and producing more fish feed is necessary to ensure the necessary
consumption. One of the main components of fish feed is oil, the most crucial lipid source in fish
feed. Fish oil is easily digestible and contains essential fatty acids, but replacing fish oil with
alternative oil might make the fish feed more sustainable. Vegetable oils can replace fish oil due
to reduced costs due to continued growth in production volumes, high availability and better
economic value. Soy, linseed, rapeseed, sunflower, palm and olive oils are often used in fish feed.
Also, microalgae oil is rich in essential fatty acids and a long-lasting alternative to fish oil.
Important is not only the environmental impact of oil alternatives but also how these alternatives
maintain or even improve the overall composition and quality of fish feed and products. An LCA
assessment was performed to determine the environmental impact of microalgae, rapeseed oil,
and fish oil. Where LCA system boundaries are âcradle to gateâ and a functional unit of 1 kg of
oil. LCA inventory is data from a literature review and SimaPro Ecoinvent database. The results
obtained from LCA are based on PEFCR impact assessment categories. The LCA results show
that the single score value for microalgae oil is 1.00E+00 mPt, for rapeseed oil 3.55E-01 mPt and
fish oil 1.61E-01 mPt. It should be noted that the comparison presented reflects a generic
comparison of alternatives, as the input data is derived from the literature analysis and the
Ecoinvent v3.8 database