Tag Archives: greenhouse gases

110-126 J.C. Ferreira, P.F.P Ferraz, G.A.S. Ferraz, F.M. Oliveira, V.G. Cadavid, G. Rossi and V. Becciolini
Spatial variability of methane and carbon dioxide gases in a Compost-Bedded Pack Barn system
Abstract |
Full text PDF (735 KB)

Spatial variability of methane and carbon dioxide gases in a Compost-Bedded Pack Barn system

J.C. Ferreira¹, P.F.P Ferraz¹*, G.A.S. Ferraz¹, F.M. Oliveira¹, V.G. Cadavid², G. Rossi³ and V. Becciolini³

¹Federal University of Lavras, Department of Agricultural Engineering, University Campus, PO Box 3037 - CEP 37200-000 Lavras, Minas Gerais, Brazil
²Universidad Nacional de Colombia, sede Medellín, Facultad de Ciencias Agrarias, Grupo de Investigación en Biodiversidad y Genética Molecular (BIOGEM). Carrera 65 #59A-110, postal code 050034 Medellín, Colombia
³University of Firenze, Department of Agriculture, Food, Environment and Forestry, 13 Via San Bonaventura, IT 50145 Firenze, Italy
*Correspondence: patricia.ponciano@ufla.br

Abstract:

The dairy sector significantly contributes to global food production, however, it is closely associated with environmental concerns, specifically the emission of greenhouse gases such as methane (CH4) and carbon dioxide (CO2). The research problem focuses on the environmental impact of livestock farming, particularly in relation to the emission of greenhouse gases (GHG) such as methane (CH4) and carbon dioxide (CO2). Therefore, the objective of this paper was to assess the spatial variability of CH4 and CO2, as well as the thermal environment through the Temperature and Humidity Index (THI) and of air velocity (V, m s-1) in a Compost Bedded Pack (CBP). The experiment was carried out in October 2023, in a commercial dairy cattle facility measuring 54×22×4.5 m (length×width×height) that housed 80 lactating cows. Measurements were collected at 75 points, 0.25 m above the bedding, for one minute in each point. To characterize the distribution of gases and the thermal environment, the data were underwent geostatistical techniques and kriging maps. THI values ranged from 72.4 to 78.4, categorizing the animals into two environments within the facility, comfort and alert to thermal conditions. The maximum recorded for CO2 was 713.60 ppm in the region with a low ventilation incidence. CH4 reached a ranging from 103.38 to 196.73 ppm in areas with low ventilation and higher temperatures. The use of geostatistics enabled the characterization of spatial variability of greenhouse gases CH4 and CO2, as well as THI and V. Analyzing these variables is crucial for implementing mitigation actions and developing an increasingly sustainable production system.

Key words:

, , , ,



1929-1937 P. Šařec, J. Korba, V. Novák and K. Křížová
Digestate application with regard to greenhouse gases and physical soil properties
Abstract |
Full text PDF (821 KB)

Digestate application with regard to greenhouse gases and physical soil properties

P. Šařec¹, J. Korba¹*, V. Novák¹ and K. Křížová¹²

¹Czech University of Life Sciences Prague, Faculty of Engineering, Department of Machinery Utilization, Kamýcká 129, CZ165 00 Prague 6, Czech Republic
²Crop Research Institute, Division of Crop Protection and Plant Health, Drnovská 507/73, CZ161 06 Prague, Czech Republic
*Correspondence: korba@tf.czu.cz

Abstract:

The article deals with the method of application of digestate with regard to the environment, soil properties and utilization of nutrients by plants. The aim is to monitor the dependence of the emission gas leakage and the dose of applied fertilizer. With the current expansion of biogas plants, a large amount of waste product, especially digestate, is being generated. This product is most often used as a liquid organic fertilizer because it contains substances important for plant growth. The disadvantage of this fertilizer is the release of greenhouse gases into the air. The digestate contains mainly ammonia, nitrogen in the residual organic matter and is a fertilizer with rapidly releasing nitrogen. The ammonium nitrogen contained in the digestate is easily subject to air losses. Therefore, a method of application for a certain crop is sought, where the smallest leaks of gases into the air occur. Different amounts of doses for the same route of administration are compared. To measure the amount of emission gases, a wind tunnel was placed on each variant of the application, taking air above the soil surface, which is discharged to the gas analyser. The monitored greenhouse gases are CH4, NH3 and CO2. Furthermore, physical properties of soil were monitored in order to verify the conditions of the experiment. One of the parameters measured was the soil bulk density of the soil by taking intact soil samples. The penetration resistance of the soil was also determined, which indicates the degree of compaction. The use of nutrients was assessed through the condition of the stand on each variant by monitoring vegetation indices using remote sensing of the earth.

Key words:

, , , ,



1189-1202 N. Castrillón, V. González, J.A. Osorio, A.P. Montoya and G. Correa
Assessment of the methane emission for different typologies of fattening swine facilities in the department of Antioquia – Colombia
Abstract |
Full text PDF (407 KB)

Assessment of the methane emission for different typologies of fattening swine facilities in the department of Antioquia – Colombia

N. Castrillón²³*, V. González¹³, J.A. Osorio¹, A.P. Montoya¹ and G. Correa¹

¹Universidad Nacional de Colombia, sede Medellín, Facultad de Ciencias Agrarias, Carrera 65 #59A-110, Código postal CO050034 Medellín, Colombia
²Universidad Nacional de Colombia, sede Medellín, Facultad de Minas, AV 80 #65-223, Código postal CO050034 Medellín, Colombia
³Grupo de Investigación en Biodiversidad y Genética Molecular (BIOGEM), Departamento de Producción Animal, Universidad Nacional de Colombia, Sede Medellín, Carrera 65 No. 59 A-110, CO050034 Código, Colombia
*Correspondence: ncastrillon@unal.edu.co

Abstract:

The explosive growth of swine production at high stocking densities in confinement farming worldwide, has raised concerns the environmental impact, health and livestock productivity and the production of associated gases in this type of large-scale farms. The aim of this paper was to study the methane gas concentration and emissions of ten different typologies of swine production installations. The facilities were in the department of Antioquia – Colombia, they were located between 800–2,300 meters above sea level (m.a.s.l.) of heights, they mainly employed natural ventilation as refrigeration strategy and they were used for pigs in fattening stage. Methane measurements were taken at animal height. Sensors were located at intermediate points of the ventilation inlet and outlet areas. The behaviour of methane concentration and emission of the facilities were analysed along with the correlation and temporal evolution of climatic variables, comfort indices and construction typologies. The information was analysed using descriptive statistics, analysis of variance (ANOVA) and principal component analysis (PCA). Were found an average of CH4 Emission Rate (ER) per facility (kg year-1) of 607.9, Global Warming Potential (GWP) per facility (kg year-1) of 15,197.42 and significant correlations between ER and cleaning frequency (CF), animal unit (AU), air flow (Q), animal density (AD) and relative humidity (RH) were evidenced. This is the first research reported in Colombia, that will be important to create some governmental policies.

Key words:

, , , ,