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Prof. Dr. Algirdas Jasinskas
Vytautas Magnus University, Agriculture Academy, Institute of Agricultural Engineering and Safety, Studentu 15A, LT-53362, Akademija, Kaunas distr., Lithuania

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Journal article
Published: 28 June 2021 in Applied Sciences
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Solving traction force and energy consumption problem in crop production, the use of strategically selected bioproducts can change the physical properties of the soil and influence changes in the traction force during tillage technological operations. The aim of this work was to investigate the influence of different biopreparations on the physical properties of the soil, winter wheat residues and the machine traction force during shallow tillage. In spring, after the resumption of winter wheat vegetation, seven different biopreparations and their mixtures were used. In autumn, after the harvest, studies of plant residues and soil porosity and density were performed prior to shallow tillage. The traction force of the tractor when working the soil shallowly was determined at 3 driving velocities—8, 10 and 12 km h−1. Research has shown a positive effect of biopreparations on the total porosity, density, and traction force of the machine. However, biopreparations did not significantly affect the cutting force of winter wheat residues. Biopreparations can reduce the traction force in shallow tillage due positive changes soil properties.

ACS Style

Kristina Lekavičienė; Vilma Naujokienė; Egidijus Šarauskis; Algirdas Jasinskas. Influence of Biopreparations on Soil and Crop Residue Properties, Traction Force of Machines in Shallow Tillage. Applied Sciences 2021, 11, 6018 .

AMA Style

Kristina Lekavičienė, Vilma Naujokienė, Egidijus Šarauskis, Algirdas Jasinskas. Influence of Biopreparations on Soil and Crop Residue Properties, Traction Force of Machines in Shallow Tillage. Applied Sciences. 2021; 11 (13):6018.

Chicago/Turabian Style

Kristina Lekavičienė; Vilma Naujokienė; Egidijus Šarauskis; Algirdas Jasinskas. 2021. "Influence of Biopreparations on Soil and Crop Residue Properties, Traction Force of Machines in Shallow Tillage." Applied Sciences 11, no. 13: 6018.

Journal article
Published: 20 May 2021 in Energies
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The article presents the results of a study on the preparation and use of faba bean waste and potato peel pellets for energy purposes. Physical and mechanical characteristics (moisture, density, ash content) of faba bean waste and potato peel pellets were investigated. The largest fraction of flour was formed on a sieve with 1 mm holes: faba bean waste—28.2 ± 2.02 g, potato peels—29.09 ± 0.73 g. For this experiment, samples were taken by mixing faba bean waste (four variants) and potato peel in the ratio of 1:1; 1:2; 1:3; 1:4 by volume (12 samples). It was found in this study that the density of pellets (DM) ranged from 1226.22 ± 13.88 kgm−3 to 1349.79 ± 6.79 kgm−3. The pellet moisture ranged from 6.70 ± 0.04% to 3.64 ± 0.13%. The lower calorific value of dry fuel pellets ranged from 15.27 ± 0.43 MJkg−1 to 16.02 ± 0.50 MJkg−1. The ash content of the pellets ranged from 8.05 ± 0.57% to 14.21 ± 0.05%. The ST temperature of the experimentally measured mixture of faba bean waste and potato peel pellets ranged from 924 to 969 °C; the DT temperature ranged from 944 to 983 °C; the HT temperature ranged from 1073 to 1202 °C, and a change in FT temperature from 1174 to 1234 °C was observed. The temperatures were sufficiently high to melt the ash. Specific emissions of CO2, CO, NOx and CxHy did not exceed the maximum levels allowed. In summary, from the results of the study of the physical properties, combustion, and emissions of waste beans and potato peel pellets (all samples), it is evident that they are used for biofuels. The combustion process of this type of pellet is characterized by efficient combustion and minimal emissions to the atmosphere.

ACS Style

Aleksandra Minajeva; Algirdas Jasinskas; Rolandas Domeika; Edvardas Vaiciukevičius; Egidijus Lemanas; Stanisław Bielski. The Study of the Faba Bean Waste and Potato Peels Recycling for Pellet Production and Usage for Energy Conversion. Energies 2021, 14, 2954 .

AMA Style

Aleksandra Minajeva, Algirdas Jasinskas, Rolandas Domeika, Edvardas Vaiciukevičius, Egidijus Lemanas, Stanisław Bielski. The Study of the Faba Bean Waste and Potato Peels Recycling for Pellet Production and Usage for Energy Conversion. Energies. 2021; 14 (10):2954.

Chicago/Turabian Style

Aleksandra Minajeva; Algirdas Jasinskas; Rolandas Domeika; Edvardas Vaiciukevičius; Egidijus Lemanas; Stanisław Bielski. 2021. "The Study of the Faba Bean Waste and Potato Peels Recycling for Pellet Production and Usage for Energy Conversion." Energies 14, no. 10: 2954.

Journal article
Published: 02 May 2021 in Agronomy
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A field experiment with reed canary grass (Phalaris arundinacea L.) was carried out at LAMMC Vėžaičiai Branch (Western Lithuania) in 2010–2016 with the aim to evaluate the impact of liming and nitrogen on grass productivity, biomass chemical content and energetic parameters of the pellets. The site soil is the natural acidic loam Retisol (pH 4.2–4.6). Reed canary grass productivity was significantly affected by the year of growing and nitrogen fertilization. The average annual dry matter (DM) yield varied from 5442 to 11,114 t ha−1. The highest yields were obtained using the annual rate of 120 kg ha−1 N (nitrogen) fertilizers. Soil liming had a negligible effect on biomass productivity. Nitrogen utilization efficiency (NUE) varied greatly depending on the growing year and N fertilization rate. After analyzing the properties of reed canary grass and wood sawdust granules, it was found that the granules obtained a high density exceeding 1000 kg m−3 DM. The lowest calorific value of reed canary grass pellets was found to be quite high—17.4 MJ kg−1 DM. All harmful emissions did not exceed the permissible values. Summarizing the results, it can be stated that reed canary grass pellets may be recommended for burning in domestic boilers.

ACS Style

Gintaras Šiaudinis; Algirdas Jasinskas; Egidijus Šarauskis; Regina Skuodienė; Regina Repšienė; Danutė Karčauskienė. The Influence of Lime Material and Nitrogen Fertilization on Reed Canary Grass Productivity, Plant Quality and Environmental Impact of Using Biomass for Energy Purposes. Agronomy 2021, 11, 895 .

AMA Style

Gintaras Šiaudinis, Algirdas Jasinskas, Egidijus Šarauskis, Regina Skuodienė, Regina Repšienė, Danutė Karčauskienė. The Influence of Lime Material and Nitrogen Fertilization on Reed Canary Grass Productivity, Plant Quality and Environmental Impact of Using Biomass for Energy Purposes. Agronomy. 2021; 11 (5):895.

Chicago/Turabian Style

Gintaras Šiaudinis; Algirdas Jasinskas; Egidijus Šarauskis; Regina Skuodienė; Regina Repšienė; Danutė Karčauskienė. 2021. "The Influence of Lime Material and Nitrogen Fertilization on Reed Canary Grass Productivity, Plant Quality and Environmental Impact of Using Biomass for Energy Purposes." Agronomy 11, no. 5: 895.

Journal article
Published: 13 January 2021 in Agronomy
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Reducing the overuse of mineral fertilizers in crop production is a key factor related to healthier soil, healthier food, and more economical, efficient, and cleaner agricultural production. The aim of this study was to investigate and to compare the effects of fixed and variable rate fertilization with fertilizer consumption, energy consumption, and environmental impact. A 4-year experimental field study using crop rotation of four plants (spring barley, winter oilseed rape, winter wheat, and faba bean) was performed. Fertilization with phosphorus and potassium at a variable rate were performed and applied based on the soil properties analyzed before the start of the research and completion of the fertilization maps. Nitrogen fertilization was performed by additional fertilization using a proximal N-sensor, which gives the accurate nitrogen uptake in plants in real-time. This was followed by a comparative evaluation analysis of variables and conventional fixed-rate fertilization methods to assess fertilizer consumption, energy consumption, environmental impact, and economic efficiency. The results of the study showed that an application of a variable fertilization rate can reduce the total amount of nitrogen, phosphorus, and potassium fertilizers by 24.9%, energy consumption by 3463.1 kg ha−1, and emissions of greenhouse gases (GHG) by 341.5 kg CO2eq ha−1 compared to fixed fertilization rate. The method of fertilization with a variable application rate reduced the costs of fertilization, and at the same time, the costs of the total plant production by €168.0 ha−1, on average.

ACS Style

Marius Kazlauskas; Indrė Bručienė; Algirdas Jasinskas; Egidijus Šarauskis. Comparative Analysis of Energy and GHG Emissions Using Fixed and Variable Fertilization Rates. Agronomy 2021, 11, 138 .

AMA Style

Marius Kazlauskas, Indrė Bručienė, Algirdas Jasinskas, Egidijus Šarauskis. Comparative Analysis of Energy and GHG Emissions Using Fixed and Variable Fertilization Rates. Agronomy. 2021; 11 (1):138.

Chicago/Turabian Style

Marius Kazlauskas; Indrė Bručienė; Algirdas Jasinskas; Egidijus Šarauskis. 2021. "Comparative Analysis of Energy and GHG Emissions Using Fixed and Variable Fertilization Rates." Agronomy 11, no. 1: 138.

Journal article
Published: 15 December 2020 in Sustainability
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This article focuses on an examination of the possibility of using potatoes as a binder in the production of heating pellets from flax stalks. This research was carried out in the form of an experimental production, laboratory analyses, and combustion tests of pellets with the Biltstar variety of flax stalks. The production was carried out using an MGL 200 pelletizing line. Adéla potatoes were used as a binder at a dose of 10%. The results were compared to the control variant without the addition of potatoes. Potatoes had a positive effect on the mechanical properties of the pellets as well as on carbon monoxide emissions. A positive effect of the addition of potatoes was recorded by an increase in specific weight (599.2 kg/m3 for the potato-free variant and 1092.3 kg/m3 for the variant with potatoes) and a significant increase in mechanical durability (4.39% for the potato-free variant and 0.71% for the variant with potatoes). The biggest difference was measured in carbon monoxide emissions (13,082 mg/m3N for the potato-free mg/m3N ariant and 5186 mg/m3N for the variant with potatoes). The values were converted to a reference oxygen content of 10%.

ACS Style

Jiří Souček; Algirdas Jasinskas. Assessment of the Use of Potatoes as a Binder in Flax Heating Pellets. Sustainability 2020, 12, 10481 .

AMA Style

Jiří Souček, Algirdas Jasinskas. Assessment of the Use of Potatoes as a Binder in Flax Heating Pellets. Sustainability. 2020; 12 (24):10481.

Chicago/Turabian Style

Jiří Souček; Algirdas Jasinskas. 2020. "Assessment of the Use of Potatoes as a Binder in Flax Heating Pellets." Sustainability 12, no. 24: 10481.

Journal article
Published: 07 October 2020 in Sustainability
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Agricultural management, environmentally friendly technologies, chemical, organic and bio-based substances used, as well as meteorological factors, have a significant impact on the fluctuations of soil organic carbon (SOC). The aim of this research was to analyze the effect of different biopreparations on the changes of SOC content and the winter wheat and winter oilseed rape yields by assessing the energy consumption efficiency and the environmental impacts. The experimental research was conducted from 2017 to 2019 in three different treatments, in two of which were used either a molasses and magnesium sulphate based-biopreparation (T1) or a bacteria-based biopreparation (T2), while treatment T3 was applied as a control where no biopreparations were used. The dynamics of SOC content were analyzed at two depths: 0–10 and 10–20 cm. For the analysis of energy efficiency indicators and environmental impacts, the greenhouse gas (GHG) and energy consumption conversion equivalents were used. A summary of the results showed that both types of biopreparations had a positive effect on the changes of SOC content, which was especially evident in the deeper layers at 10–20 cm depth, where, irrespective of the crop type, a more significant increase of the SOC content was observed every year of the experiment compared to the control treatment. Biopreparations had a significant effect in increasing the winter wheat and winter oilseed rape yield. The best energy efficiency ratio was observed in winter wheat (4.84) and winter oilseed rape (5.11) in treatment T1. The results of the environmental impact assessment showed that the lowest GHG emissions were recorded in the winter wheat production in treatment T1 at 108.7–149.1 kg CO2eq Mg−1, while the highest were observed in oilseed rape production in the control treatment T3 at 343.4 kg CO2eq Mg−1.

ACS Style

Darius Juknevičius; Zita Kriaučiūnienė; Algirdas Jasinskas; Egidijus Šarauskis. Analysis of Changes in Soil Organic Carbon, Energy Consumption and Environmental Impact Using Bio-Products in the Production of Winter Wheat and Oilseed Rape. Sustainability 2020, 12, 8246 .

AMA Style

Darius Juknevičius, Zita Kriaučiūnienė, Algirdas Jasinskas, Egidijus Šarauskis. Analysis of Changes in Soil Organic Carbon, Energy Consumption and Environmental Impact Using Bio-Products in the Production of Winter Wheat and Oilseed Rape. Sustainability. 2020; 12 (19):8246.

Chicago/Turabian Style

Darius Juknevičius; Zita Kriaučiūnienė; Algirdas Jasinskas; Egidijus Šarauskis. 2020. "Analysis of Changes in Soil Organic Carbon, Energy Consumption and Environmental Impact Using Bio-Products in the Production of Winter Wheat and Oilseed Rape." Sustainability 12, no. 19: 8246.

Journal article
Published: 05 October 2020 in Sustainability
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In order to evaluate the liming and nitrogen efficiency of cocksfoot (Dactylisglomerata L.) productivity, a field experiment was performed in Western Lithuania’s naturally acidic Retisol area (55°43′ N, 21°27′ E). Based on seven years of research data, dry mass (DM) yield (including first and second cuttings) reliably varied depending on the growing year, from 4.57 to 7.34 t ha−1. The most significant and positive impact on DM yield was obtained by the application of higher liming (6.0 t ha−1 CaCO3) and nitrogen (120 kg ha−1) rates. Liming utilization efficiency (LUE) was affected by the year of growth (although not always significantly), with a 6.0 t ha−1 CaCO3 liming rate and nitrogen fertilization. Nitrogen utilization efficiency (NUE) varied depending on the growing year and N fertilization rate. One of the most effective solutions for improving cocksfoot biomass is to prepare pressed granulated biofuel, which is potentially a good quality raw material for the direct combustion process. The execution and evaluation of technological parameters and properties of produced pellets revealed that cocksfoot pellet humidity reached 10.0% ± 0.6%, whereas pellet density was sufficiently high, and reached 983.8 ± 22.9 kgm−3 DM. The lower calorific value of cocksfoot pellets reached 17.7 MJkg−1. Ash content after pellet burning was relatively high, reaching 7.0–7.6%. Pellet ash melting temperatures were sufficiently high, with ash softening temperature (ST) reaching 1065 °C. Determined emissions of harmful gases from the burning of cocksfoot pellets (CO2, CO, SO2, NOx and unburnt hydrocarbons CxHy) did not exceed the permissible limits.

ACS Style

Gintaras Šiaudinis; Algirdas Jasinskas; Danutė Karčauskienė; Egidijus Šarauskis; Kristina Lekavičienė; Regina Repšienė. The Dependence of Cocksfoot Productivity of Liming and Nitrogen Application and the Assessment of Qualitative Parameters and Environmental Impact Using Biomass for Biofuels. Sustainability 2020, 12, 8208 .

AMA Style

Gintaras Šiaudinis, Algirdas Jasinskas, Danutė Karčauskienė, Egidijus Šarauskis, Kristina Lekavičienė, Regina Repšienė. The Dependence of Cocksfoot Productivity of Liming and Nitrogen Application and the Assessment of Qualitative Parameters and Environmental Impact Using Biomass for Biofuels. Sustainability. 2020; 12 (19):8208.

Chicago/Turabian Style

Gintaras Šiaudinis; Algirdas Jasinskas; Danutė Karčauskienė; Egidijus Šarauskis; Kristina Lekavičienė; Regina Repšienė. 2020. "The Dependence of Cocksfoot Productivity of Liming and Nitrogen Application and the Assessment of Qualitative Parameters and Environmental Impact Using Biomass for Biofuels." Sustainability 12, no. 19: 8208.

Journal article
Published: 01 October 2020 in Sustainability
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The article analyses and evaluates the possibilities of using oak bark, oak leaves, and their mixtures for biofuel. The preparation of this waste for the burning process (milling, granulation) has been investigated and the results have been presented together with the analysis of the prepared granules’ properties—humidity, density, strength, elemental composition, ash content, caloric value, and others. The moisture content of the oak waste granules ranged from 8.1% to 12.5%, and the granules’ density ranged from 975.8 to 1122.2 kg m−3 DM (dry matter). The amount of oak ash found was very high (from 10.4% to 14.7%)—about 10 times higher than that of wood waste granules. The calorific value determined after burning the oak bark and leaves pellets was sufficiently high, ranging from 17.3 to 17.7 MJ kg−1. This thermal value of oak waste granules was close to the calorific value of the herbaceous plant species and some types of wood waste. The environmental impact of burning the granules of oak waste was also assessed. The harmful emissions of carbon monoxide and dioxide, nitrogen oxides, and unburnt hydrocarbons into the environment were found to be below the permissible limits for the incineration of oak waste granules. The highest CO gas concentration, determined when burning the oak leaves, was 1187.70 mg m−3, and the lowest NOx concentration, determined when burning the oak bark and leaf mixture granules, was 341.2 mg m−3. The coefficient of energy efficiency R of the granulated oak leaves biofuel, when the oak waste biomass moisture content was reduced by 10%, reached 3.64. It was very similar to the results of previous studies of various types of granulated straw biofuel (3.5–3.7). The research results presented show that, given that the main parameters of oak waste meet the basic requirements of solid biofuel, oak bark, leaves, and their mixture can be recommended to be used as solid biofuels.

ACS Style

Algirdas Jasinskas; Ramūnas Mieldažys; Eglė Jotautienė; Rolandas Domeika; Edvardas Vaiciukevičius; Marek Marks. Technical, Environmental, and Qualitative Assessment of the Oak Waste Processing and Its Usage for Energy Conversion. Sustainability 2020, 12, 8113 .

AMA Style

Algirdas Jasinskas, Ramūnas Mieldažys, Eglė Jotautienė, Rolandas Domeika, Edvardas Vaiciukevičius, Marek Marks. Technical, Environmental, and Qualitative Assessment of the Oak Waste Processing and Its Usage for Energy Conversion. Sustainability. 2020; 12 (19):8113.

Chicago/Turabian Style

Algirdas Jasinskas; Ramūnas Mieldažys; Eglė Jotautienė; Rolandas Domeika; Edvardas Vaiciukevičius; Marek Marks. 2020. "Technical, Environmental, and Qualitative Assessment of the Oak Waste Processing and Its Usage for Energy Conversion." Sustainability 12, no. 19: 8113.

Journal article
Published: 18 August 2020 in Renewable Energy
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This article analyses and evaluates the impact of the technology of soil processing on the biomass indicators of faba bean waste. Samples from five different primary tillage systems were taken and analysed. The raw material of faba bean waste was processed and pressed into cylindrical pellets. The results of the experimental research of the pellet properties revealed that the content of moisture of the pellets from faba bean waste changed from 8.2% (deep cultivation, 3-GP) to 10.8% (untreated soil, 5-ND). The highest density of faba bean waste pellets was obtained from the sample of conventional soil ploughing, (1-IA) (1311 kg m−3), while the lowest density was recorded under shallow ploughing (2-SA) – 1275 kg m−3. The lower calorific value of dry biofuel from faba bean waste pellets was similar in all the samples and ranged from 16.9 MJ kg−1 (5-ND) to 17.1 MJ kg−1 (2-SP). The calorific value of faba bean waste pellets was relatively high and was close to the calorific value of some types of wood waste. The following harmful gas emissions were analysed and evaluated: carbon monoxide CO, carbon dioxide CO2, unburned hydrocarbons CxHy, and nitrogen oxides NOx. The harmful gas environmental emissions detected while burning the pellets of faba bean waste have not exceeded the permissible limits. The best results of the pellet properties, the content of ash and the emissions were obtained under conventional ploughing (1-IA) and deep cultivation (3-GP). The research results suggest that faba bean waste could be used as granulated biofuel, since the main parameters of this legume waste correspond to the basic requirements of solid biofuel. It was determined that under untreated soil (5-ND) technology the CO2 emissions eqv. were twice lower than under conventional soil ploughing (1-IA). These results show that no-till technology is suitable for sustainable agricultural practise both for producing the faba bean grain and for processing the pellets from the waste.

ACS Style

Algirdas Jasinskas; Aleksandra Minajeva; Egidijus Šarauskis; Kęstutis Romaneckas; Rasa Kimbirauskienė; Nerijus Pedišius. Recycling and utilisation of faba bean harvesting and threshing waste for bioenergy. Renewable Energy 2020, 162, 257 -266.

AMA Style

Algirdas Jasinskas, Aleksandra Minajeva, Egidijus Šarauskis, Kęstutis Romaneckas, Rasa Kimbirauskienė, Nerijus Pedišius. Recycling and utilisation of faba bean harvesting and threshing waste for bioenergy. Renewable Energy. 2020; 162 ():257-266.

Chicago/Turabian Style

Algirdas Jasinskas; Aleksandra Minajeva; Egidijus Šarauskis; Kęstutis Romaneckas; Rasa Kimbirauskienė; Nerijus Pedišius. 2020. "Recycling and utilisation of faba bean harvesting and threshing waste for bioenergy." Renewable Energy 162, no. : 257-266.

Journal article
Published: 29 July 2020 in Energy
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Faba beans are an important crops in the agricultural crop rotations and are valuable as medicine, food and feed. Faba beans improve the soil, reduces the utilization of chemical fertilizers for future crops and contribute to the reduction of environmental pollution in agriculture. The aim of this work was to evaluate the potential for environmental mitigation, including the reduction of total greenhouse gas (GHG) emissions from agricultural inputs, and the potential for improving the energy efficiency in faba bean production by managing tillage intensity. Experiments in faba bean production were performed using five tillage methods with different intensities: T-1-C, conventional tillage with deep ploughing at a depth of 23–25 cm (as a control); T-2, shallow ploughing at a depth of 12–15 cm; T-3, deep chiselling at a depth of 23–25 cm; T-4 – shallow cultivation at a depth of 12–15 cm; and NT, no-tillage. The results showed that the replacement of deep ploughing with lower-intensity tillage operations in faba bean production reduced fuel consumption by 9.8–50.8%, total energy consumption by 298–1194 MJ ha−1 and total GHG emissions by 21–128 kg CO2eq ha−1. The highest yields of beans (4.41 Mg ha−1) and energy output (88,133 MJ ha−1) were obtained under treatment T-3, whereas the best energy productivity (0.37 kg MJ−1) and energy efficiency ratio (7.43), and the lowest environmental pollution (481 CO2eq ha−1) were observed under the NT treatment. The analyse of energy efficiency and pollution in this research led to very important findings: less intensive and more soil-friendly tillage practices have a considerable potential for environmental mitigation in agriculture and simultaneously improve energy efficiency without reducing yield.

ACS Style

Egidijus Šarauskis; Kęstutis Romaneckas; Algirdas Jasinskas; Rasa Kimbirauskienė; Vilma Naujokienė. Improving energy efficiency and environmental mitigation through tillage management in faba bean production. Energy 2020, 209, 118453 .

AMA Style

Egidijus Šarauskis, Kęstutis Romaneckas, Algirdas Jasinskas, Rasa Kimbirauskienė, Vilma Naujokienė. Improving energy efficiency and environmental mitigation through tillage management in faba bean production. Energy. 2020; 209 ():118453.

Chicago/Turabian Style

Egidijus Šarauskis; Kęstutis Romaneckas; Algirdas Jasinskas; Rasa Kimbirauskienė; Vilma Naujokienė. 2020. "Improving energy efficiency and environmental mitigation through tillage management in faba bean production." Energy 209, no. : 118453.

Conference paper
Published: 20 May 2020 in 20th International Scientific Conference Engineering for Rural Development Proceedings
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ACS Style

Ramunas Mieldazys; Egle Jotautiene; Algirdas Jasinskas. Physical mechanical properties evaluation of experimental granulated poultry manure fertilizer. 20th International Scientific Conference Engineering for Rural Development Proceedings 2020, 1 .

AMA Style

Ramunas Mieldazys, Egle Jotautiene, Algirdas Jasinskas. Physical mechanical properties evaluation of experimental granulated poultry manure fertilizer. 20th International Scientific Conference Engineering for Rural Development Proceedings. 2020; ():1.

Chicago/Turabian Style

Ramunas Mieldazys; Egle Jotautiene; Algirdas Jasinskas. 2020. "Physical mechanical properties evaluation of experimental granulated poultry manure fertilizer." 20th International Scientific Conference Engineering for Rural Development Proceedings , no. : 1.

Conference paper
Published: 20 May 2020 in 20th International Scientific Conference Engineering for Rural Development Proceedings
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ACS Style

Algirdas Jasinskas; Justinas Skruodys; Rolandas Domeika; Ramunas Mieldazys; Nerijus Pedisius. Investigation of physical-mechanical and energy properties of granulated cereal plant waste and ash obtained by incineration of produced biofuel. 20th International Scientific Conference Engineering for Rural Development Proceedings 2020, 1 .

AMA Style

Algirdas Jasinskas, Justinas Skruodys, Rolandas Domeika, Ramunas Mieldazys, Nerijus Pedisius. Investigation of physical-mechanical and energy properties of granulated cereal plant waste and ash obtained by incineration of produced biofuel. 20th International Scientific Conference Engineering for Rural Development Proceedings. 2020; ():1.

Chicago/Turabian Style

Algirdas Jasinskas; Justinas Skruodys; Rolandas Domeika; Ramunas Mieldazys; Nerijus Pedisius. 2020. "Investigation of physical-mechanical and energy properties of granulated cereal plant waste and ash obtained by incineration of produced biofuel." 20th International Scientific Conference Engineering for Rural Development Proceedings , no. : 1.

Conference paper
Published: 20 May 2020 in 20th International Scientific Conference Engineering for Rural Development Proceedings
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ACS Style

Marius Kazlauskas; Egidijus Sarauskis; Kestutis Romaneckas; Dainius Steponavicius; Algirdas Jasinskas; Vilma Naujokiene; Indre Bruciene; Tadas Ziogas; Dovydas Vaicekauskas; Justinas Anusauskas; Abdul Mounem Mouazen. Effect of variable rate seeding on winter wheat seedbed and germination parameters using soil apparent electrical conductivity. 20th International Scientific Conference Engineering for Rural Development Proceedings 2020, 1 .

AMA Style

Marius Kazlauskas, Egidijus Sarauskis, Kestutis Romaneckas, Dainius Steponavicius, Algirdas Jasinskas, Vilma Naujokiene, Indre Bruciene, Tadas Ziogas, Dovydas Vaicekauskas, Justinas Anusauskas, Abdul Mounem Mouazen. Effect of variable rate seeding on winter wheat seedbed and germination parameters using soil apparent electrical conductivity. 20th International Scientific Conference Engineering for Rural Development Proceedings. 2020; ():1.

Chicago/Turabian Style

Marius Kazlauskas; Egidijus Sarauskis; Kestutis Romaneckas; Dainius Steponavicius; Algirdas Jasinskas; Vilma Naujokiene; Indre Bruciene; Tadas Ziogas; Dovydas Vaicekauskas; Justinas Anusauskas; Abdul Mounem Mouazen. 2020. "Effect of variable rate seeding on winter wheat seedbed and germination parameters using soil apparent electrical conductivity." 20th International Scientific Conference Engineering for Rural Development Proceedings , no. : 1.

Journal article
Published: 23 March 2020 in Energies
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This paper presents the results of research on the preparation and use for energy purposes of three reed herbaceous energy plants: reed (Phragmites australis) and bulrush (Typha); both grown in local vicinities on lakes and riverbanks and reed canary grass (Phalaris arundinacea L.). The physical-mechanical characteristics (density, moisture, and ash content) of chopped and milled reeds were investigated. The investigation of mill fractional compositions determined the largest amount of mill—reed mill, collected on the sieves of 0.63 mm (40.0%). The pellet moisture ranged from 10.79% to 6.32%, while the density was 1178.9 kg m−3 for dry matter (DM) of reed. The ash content of reed, bulrush and reed canary grass pellets was 3.17%, 5.88%, and 7.99%, respectively. The ash melting temperature ranged from 865 to 1411 °C; these temperatures were high enough for ash melting. The determined pellet calorific value varied from 17.4 to 17.9 MJ kg−1 DM. The disintegration force, indicating pellet strength, ranged from 324.25 N for reed canary grass to 549.24 N for reed. The determined emissions of harmful pollutants—CO2, CO, NOx, and unburnt hydrocarbons (CxHy)—did not exceed the maximum permissible levels. The assessment of greenhouse gas emissions (GHG) from technology showed that the CO2 equivalents ranged from 7.3 to 10.1 kg CO2-eq. GJ−1 for reed and reed canary grass, respectively.

ACS Style

Algirdas Jasinskas; Dionizas Streikus; Egidijus Šarauskis; Mečys Palšauskas; Kęstutis Venslauskas. Energy Evaluation and Greenhouse Gas Emissions of Reed Plant Pelletizing and Utilization as Solid Biofuel. Energies 2020, 13, 1516 .

AMA Style

Algirdas Jasinskas, Dionizas Streikus, Egidijus Šarauskis, Mečys Palšauskas, Kęstutis Venslauskas. Energy Evaluation and Greenhouse Gas Emissions of Reed Plant Pelletizing and Utilization as Solid Biofuel. Energies. 2020; 13 (6):1516.

Chicago/Turabian Style

Algirdas Jasinskas; Dionizas Streikus; Egidijus Šarauskis; Mečys Palšauskas; Kęstutis Venslauskas. 2020. "Energy Evaluation and Greenhouse Gas Emissions of Reed Plant Pelletizing and Utilization as Solid Biofuel." Energies 13, no. 6: 1516.

Journal article
Published: 03 December 2019 in Renewable Energy
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There were investigated three varieties of fibrous hemp – Felina 32, USO 31 and Finola and one sort of fibrous nettle. Before granulation, plants were chopped and milled, and were determined chaff and mill fractional composition. Produced pellet humidity ranged from 9.98% to 8.87%, and pellet density reached 1171.7 kg m−3 DM of USO 31 variety. The ash contents of the fibrous hemp and fibrous nettle pellet reached 3.58% and 6.6%, and the net calorific values were 17.37 MJ kg−1 and 16.93 MJ kg−1 DM, respectively. The composition of determined fibrous plant chemical elements ranged within these limits: carbon – 45–48%; hydrogen – 1.0–1.5%, nitrogen – 5–6% and oxygen – 41–43%. Determined ash melting temperatures ranged from IT – 733–673 °C to FT – 863–859 °C. Pellets disintegration force varied from 992 N for Felina 32 till 1338 N for fibrous nettle. Harmful emissions were also estimated, it ranged – CO2 – 3.1–5.0%, CO – 411.7–1410.8 ppm, NOx – 88.0–117.3 ppm and unburnt hydrocarbons CxHy – 26.0–127.9 ppm have been determined when burning of granules. Determined emissions were within the permissible limits. Coefficient of energy efficiency of granulated biofuel, when biomass moisture content was decreased by 20%, was 2.83.

ACS Style

Algirdas Jasinskas; Dionizas Streikus; Tomas Vonžodas. Fibrous hemp (Felina 32, USO 31, Finola) and fibrous nettle processing and usage of pressed biofuel for energy purposes. Renewable Energy 2019, 149, 11 -21.

AMA Style

Algirdas Jasinskas, Dionizas Streikus, Tomas Vonžodas. Fibrous hemp (Felina 32, USO 31, Finola) and fibrous nettle processing and usage of pressed biofuel for energy purposes. Renewable Energy. 2019; 149 ():11-21.

Chicago/Turabian Style

Algirdas Jasinskas; Dionizas Streikus; Tomas Vonžodas. 2019. "Fibrous hemp (Felina 32, USO 31, Finola) and fibrous nettle processing and usage of pressed biofuel for energy purposes." Renewable Energy 149, no. : 11-21.

Journal article
Published: 18 August 2019 in Sustainability
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A need for the disposal of poultry manure and the reduction of its impact on the environment encourages the search for cleaner and more efficient ways to utilize and recycle production waste. It is known that granulated ash and manure are the most effective alternatives for ash and manure recycling, as compared to the unprocessed product. This paper presents an investigation of ash and poultry manure recycling for granulated fertilizers. Accepted standard experimental methods were used. The physical and mechanical characteristics of the granules, elemental composition ratio, and the process of compression of the raw material mill were determined experimentally. This research shows that, when a higher ash concentration was determined, the initial bulk density was larger and the density and pressure in the granulation process increases faster. The content of ash in the raw material increased granule strength; however, when increasing the ash mass in the raw material from 25% to 50%, energy consumption increased from 6.59 kJ·kg−1 to 17.72 kJ·kg−1. The process of compression of the raw material mill was obtained in two stages. In the first stage of compression, the mass density varied from 3–11 kg·m−3 and the pressure varied from 1.25–8.27 MPa. In the second pressure stage, the mass deformation was elastic and the pressure process was described by indicator functions.

ACS Style

Ramūnas Mieldažys; Eglė Jotautienė; Algirdas Jasinskas. The Opportunities of Sustainable Biomass Ashes and Poultry Manure Recycling for Granulated Fertilizers. Sustainability 2019, 11, 4466 .

AMA Style

Ramūnas Mieldažys, Eglė Jotautienė, Algirdas Jasinskas. The Opportunities of Sustainable Biomass Ashes and Poultry Manure Recycling for Granulated Fertilizers. Sustainability. 2019; 11 (16):4466.

Chicago/Turabian Style

Ramūnas Mieldažys; Eglė Jotautienė; Algirdas Jasinskas. 2019. "The Opportunities of Sustainable Biomass Ashes and Poultry Manure Recycling for Granulated Fertilizers." Sustainability 11, no. 16: 4466.

Original paper
Published: 08 April 2019 in Electrical Engineering
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The integration of photovoltaic devices (PV) into the network could ensure the efficient use of solar energy. Nevertheless, when using PV systems for water heating, the main problem arises: if a heating element is directly connected to a solar module without using a device that regulates the supply of electric energy to the electric heating element in the boiler, the usage of photoelectric module becomes inefficient. When solar raying is small, the module current becomes equal to the current of the short circuit and the decrease in voltage in the heating element reduces the voltage in the solar module to almost zero. Therefore, it is not advisable to connect solar modules directly to electric heating elements. This study presents Nectar Sun—a device that provides the necessary connection. Nectar Sun is a DC to DA converter, which operates on the basis of a micro-switch, uses maximum power point tracking technology and regulates the supply of electricity to the heating element by pulse-width modulation. These qualities highly improve the characteristics of PV systems. When lighting is equal to 400 W/m2, without Nectar Sun regulator, the voltage of one module will approximately be 22 V, current—3.4 A and power—75 W. When Nectar Sun controller is added, it produces maximum power point (MPP) regime with Umax ≈ 30 V, Imax ≈ 3.2 A and Pmax ≈ 96 W. The usage of PV module power in this point is 100%. The maximum power under lighting 800 W/m2 is about 190 W. The usage of PV module power in this point is equal to about 90%. Electric heating elements under 220 V are 1.5 kW, 2 kW and 3 kW PE (nominal power), with Umax ≈ 124 V (total voltage of four PV modules in the MPP) which will accordingly be 480 W, 640 W and 1120 W PE power. Each PV module gets 1/4 of this power, which is equal to 50%, 65% and 115% of its Pmax. The power graph of Nectar Sun regulator shows two operational regimes of the device: with 4 PV modules (maximum power about 540 W) and 6 PV modules (maximum power about 860 W). Nectar Sun quickly finds the MPP of PV modules and keeps it stable under different lighting conditions. Under real conditions, the boiler temperature graph is proportional to the power graph. In the system with four PV modules, the maximum water temperature does not exceed 58 °C. In the system with six PV modules, the maximum boiler water temperature increases by an average of 10 °C. Thus, the energy generated by PV modules is effectively supplied to the electric heating element. Additionally, Nectar Sun provides independent water temperature control during the day; it automatically connects to the power supply under insufficient sunlight. This guarantees normal boiler operation regardless of environmental conditions throughout the year.

ACS Style

Mečys Palšauskas; Gintautas Baliukonis; Algirdas Jasinskas; Antanas Pocius. Device ensuring effective usage of photovoltaics for water heating. Electrical Engineering 2019, 101, 189 -202.

AMA Style

Mečys Palšauskas, Gintautas Baliukonis, Algirdas Jasinskas, Antanas Pocius. Device ensuring effective usage of photovoltaics for water heating. Electrical Engineering. 2019; 101 (1):189-202.

Chicago/Turabian Style

Mečys Palšauskas; Gintautas Baliukonis; Algirdas Jasinskas; Antanas Pocius. 2019. "Device ensuring effective usage of photovoltaics for water heating." Electrical Engineering 101, no. 1: 189-202.