scholarly journals THE EFFECT OF DIFFERENT NEW BEDDING MATERIALS ON AMMONIA EMISSION FROM DAIRY COW SLURRY

AGROFOR ◽  
2020 ◽  
Vol 5 (3) ◽  
Author(s):  
Maarit HELLSTEDT ◽  
Hannu E.S. HAAPALA
Keyword(s):  
Dairy Cow ◽  
Volume Ratio ◽  
Renewable Resource ◽  
Ammonia Emission ◽  
Ammonia Emissions ◽  
Emission Rates ◽  
Canary Grass ◽  
Bedding Materials ◽  
By Products ◽  
Cow Slurry

Agriculture is the most significant source of Ammonia emission that causes e.g. loss of Nitrogen from agricultural systems. Manure is the main source of Ammonia emissions and causes losses in the nutrient cycles of agriculture as well as local odour nuisance. By using different bedding materials, it is possible to reduce both the Ammonia emissions and to improve the cycling of nutrient. Peat is known as an effective litter material but its use as a virtually non-renewable resource is questionable. Therefore, we need to find new bedding materials to replace peat. In this study, the effect of ten different industrial by-products, reeds and stalks to reduce Ammonia emissions was tested in laboratory in January 2020. Dairy cow slurry and bedding materials were mixed in a volume ratio of 4:1. The Ammonia emission was measured for two weeks once or twice a day. Measurements were performed with a photoacoustic method. The results show that all tested materials reduce the Ammonia emission from the cow slurry used. Interesting new materials to substitute peat are zero fiber and briquetted textile waste. Wheat bran, pellets made of reed canary grass and chopped bulrush had the best effect which is at the same level as that of peat. However, no statistically significant differences between the calculated emission rates were found.

Ammonia emission from dairy cow manure stored in a lagoon over summer

2008 ◽  
Vol 88 (4) ◽  
pp. 611-615 ◽  
Author(s):  
S M McGinn ◽  
T. Coates ◽  
T K Flesch ◽  
B. Crenna
Keyword(s):  
Dairy Cow ◽  
Dispersion Model ◽  
Sonic Anemometer ◽  
Stochastic Approach ◽  
Dairy Manure ◽  
Ammonia Emission ◽  
Ammonia Emissions ◽  
N Pollution ◽  
Significant Pathway ◽  
Dairy Cow Manure

It is recognized that volatilized ammonia (NH3) from intensive livestock production can be a significant pathway for nitrogen (N) pollution to land and water, and can contribute to poor air quality. The objectives of our study were to document NH3 emissions from a dairy lagoon and to assess the influence of meteorology on NH3 emissions. Ammonia emissions were determined using a backward Lagrangian Stochastic approach using WindTrax software, an open-path NH3 laser and a sonic anemometer. Results indicate that an average 5.1 ± 1.6 g NH3 m-2 d-1 was released over the summer; however, the emission varied typically over 24 h between 3.6 and 8.6 g NH3 m-2 d-1. Wind speed and surface temperature of the lagoon had similar influences on the magnitude of the release, where their direct impact on NH3 emission accounted for 28 and 31% of the variability, respectively. The main implication of this study is that NH3 losses are significant from dairy lagoons, contributing to the issue of N pollution. As well, NH3 emissions are a loss of valuable N for manure used as fertilizer, which in our study amounted to approximately 13% of the total ammoniacal N content of the manure in the lagoon. Key words: Ammonia, dairy, manure, cattle, dispersion model

scholarly journals Ammonia emissions from dairy cattle manure under variable ventilation rates

2014 ◽  
Vol 14 (1) ◽  
pp. 141-151 ◽  
Author(s):  
Indrė Bagdonienė ◽  
Rolandas Bleizgys
Keyword(s):  
Dairy Cattle ◽  
Ventilation Rate ◽  
Ammonia Emission ◽  
Ammonia Emissions ◽  
Emission Rates ◽  
Flow Measurements ◽  
Air Exchange Rate ◽  
Variable Ventilation ◽  
Clean Air ◽  
Ventilation Rates

AbstractThe effect of variable ventilation rates on ammonia emission rates from manure was determined through mass flow measurements in a laboratory test unit and the possibility of reducing ammonia emissions by regulating the intensity of the ventilation in cowsheds. The air exchange rate represents an important determinant of ammonia emissions. A 4.5 times increase in ventilation rate causes ammonia emission to increase by 1.7-2.5 times. The effect of ventilation rate on ammonia emission from manure was found to increase under the condition of extremely high airflow rates, i.e. over 250 m3 h-1 m-2. Under the recommended ventilation rate of 105-420 m3 h-1 per cow, ammonia emission will vary from 2016 to 3195 mg h-1, respectively. The ammonia emissions can be significantly reduced in dairy cattle barns by reducing ventilation rates provided the air quality indicators remain in conformity with the requirements. The ammonia emissions can also be reduced in barns by controlling and diverting air flows inside the barns by preventing the clean air from reaching fresh manure as much as possible while reducing the vertical concentration gradient of ammonia.

scholarly journals Diet optimization for dairy cows to reduce ammonia emissions

2021 ◽  
Author(s):  
Dzidra Kreismane ◽  
◽  
Elita Aplocina ◽  
Kaspars Naglis-Liepa ◽  
Laima Berzina ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Dairy Cow ◽  
Emission Reduction ◽  
Dairy Farm ◽  
Ammonia Emission ◽  
Ammonia Emissions ◽  
Nitrogen Emissions ◽  
Balanced Diet ◽  
Emission Reduction Potential ◽  
Lactation Phase

Feeding livestock a balanced diet with a differentiated crude protein (CP) content, depending on the lactation phase can reduce nitrogen emissions from livestock excrement and urine. A higher content of non-starch polysaccharides in livestock diets improves feed absorption in the livestock body and, consequently, nitrogen is emitted more from protein present in livestock manure than from urea acid present in livestock urine. The aim of the study is to calculate the ammonia emission reduction potential in Latvia by optimizing the feeding of dairy cows and ensuring life longevity, as well as provide justification for ammonia emission reduction in dairy farms. Calculations made by using the NorFor Model for optimization of dairy cow (Bos primigenius f. taurus) diets revealed that compared with lowyielding cows, a higher CP content diet fed to high-yielding cows at the beginning of lactation increased the amount of nitrogen (N) in their excrement and urine by 90–180 g d-1. Reducing the CP content in the cow diet by an average of 10 g kg-1 dry matter (DM) during mid-lactation resulted in the same trend. Reducing the CP content in the cow diet during late lactation and the dry period by another 20–30 g kg-1 of DM, N emissions from excrement and urine significantly decreased. Increasing the lifespan of dairy cows also means reducing ammonia emissions from the farm. By increasing the number of lactations per cow on dairy farm, it is possible to reduce the number of heifers per cow. The total reduction of ammonia emissions in Latvia was calculated based on a long-term projection of a decrease of 0.1 heifer per dairy cow. Ammonia emissions could be reduced by 0.051 kt by decreasing the number of heifers by 12.54 thou. at the planned increase in the lifespan of dairy cows by 2030.

scholarly journals Emission of harmful gases from animal production in Poland

2021 ◽  
Vol 193 (6) ◽  
Author(s):  
Kamila Mazur ◽  
Kamil Roman ◽  
Witold Jan Wardal ◽  
Kinga Borek ◽  
Jan Barwicki ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ammonia Concentration ◽  
Herd Size ◽  
Animal Production ◽  
Ammonia Emission ◽  
Emission Rates ◽  
Housing Systems ◽  
Air Exchange Rate ◽  
Microclimate Conditions ◽  
Air Exchange

AbstractThe aim of the study was to present the scale of greenhouse gas emissions from animal production, and to provide test results from different housing systems. In three free stall buildings, two with slurry in deep channels and one with cattle in cubicles staying on shallow litter concentration of ammonia and carbon dioxide were measured in summer season by using dedicated equipment from Industrial Scientific Research. Air exchange was calculated on the base of balance carbon dioxide method. This method was used in order to estimate the air flow rate. Concentrations of ammonia and CO2 were measured as the base for air exchange and ammonia emission rates. Ammonia emissions were product of ammonia concentration and air exchange rate. Temperature and relative humidity were measured to establish microclimate conditions in buildings tested to show the overall microclimatic situation in buildings. Differences between ammonia emission rates were observed in both housing systems. The highest ammonia emission rate was equal to 2.75 g·h−1·LU−1 in well-ventilated cattle barn with the largest herd size.

An Investigation on Aldehyde and Ammonia Emissions from a 4-Stroke Gasoline-Fueled Motorcycle. Ammonia Emission Reduction by using a SCR Catalyst

2013 ◽  
Author(s):  
Luiz Carlos Daemme ◽  
Renato de Arruda Penteado ◽  
Cláudio Furlan ◽  
Marcelo Errera ◽  
Fátima M. Z. Zotin
Keyword(s):  
Emission Reduction ◽  
Ammonia Emission ◽  
Ammonia Emissions ◽  
Scr Catalyst

scholarly journals Milk urea concentration as an indicator of ammonia emission from dairy cow barn under restricted grazing

2011 ◽  
Vol 94 (1) ◽  
pp. 321-335 ◽  
Author(s):  
G. van Duinkerken ◽  
M.C.J. Smits ◽  
G. André ◽  
L.B.J. Šebek ◽  
J. Dijkstra
Keyword(s):  
Dairy Cow ◽  
Urea Concentration ◽  
Ammonia Emission ◽  
Milk Urea

scholarly journals REDUCTION OF AMMONIA EMISSIONS FROM THE COMPOSTING OF SLAUGHTERHOUSE SOLID WASTE USING ZEOLITE

2020 ◽  
Vol 3 (2) ◽  
pp. 164
Author(s):  
Rhenny Ratnawati ◽  
Sugito Sugito
Keyword(s):  
Solid Waste ◽  
High Capacity ◽  
Raw Material ◽  
Ammonia Emission ◽  
Ammonia Emissions ◽  
Impact Study ◽  
Aerobic Composting ◽  
Ammonia Gas ◽  
Gas Emissions ◽  
Composting Process

The process of aerobic composting the slaughterhouse (SH) solid waste generate ammonia emissions. Aim: The objective of this research to study the ability of the adsorbent to use zeolite to reduce ammonia gas emissions during the composting process of SH solid waste. Methodology and Results: Reduction of ammonia emission is conducted during the aerobic composting process which is 50 days. The raw material composition of the composting process used was 100% rumen contents, 60% rumen contents: 40% straw, 50% rumen contents: 50% straw, and 40% rumen contents: 60% straw. Zeolite used in the form of granular size 100 mesh. The result of the research showed that the level of release of ammonia gas emissions during the composting process could be reduced by zeolite. Conclusion, significance, and impact study: The efficiency of reducing ammonia gas emissions using zeolite adsorbents in the composting process of SH solid waste ranges from 98.09 - 99.40% on average. Zeolite is an adsorbent that has high adsorption power because it has many pores and has a high ion exchange high capacity and serves as an absorbent cation that can cause environmental pollution.

Satellite based county- to provincial-level ammonia emissions estimates

2021 ◽  
Author(s):  
Enrico Dammers ◽  
Mark Shephard ◽  
Evan White ◽  
Debora Griffin ◽  
Evan Chow ◽  
...  
Keyword(s):  
Western Europe ◽  
Satellite Observations ◽  
Ammonia Emission ◽  
Ammonia Emissions ◽  
Wind Fields ◽  
Spatially Resolved ◽  
Satellite Sensors ◽  
Cross Track ◽  
North Western

<p>While ammonia (NH3) at its current levels is known to be a hazard to environmental and human health, the atmospheric budget is still quite uncertain. This can largely be attributed to the short lifetime of ammonia in combination with an overall lack of (dense) in-situ measurement networks. The capability to observe ammonia distributions with satellites has opened new ways to study the atmospheric ammonia budget. Previous studies have demonstrated the capability of current ammonia satellite sensors to resolve emissions from point like sources, biomass burning, and constraining emission sources at a regional level with methods involving the use of air quality models.</p><p>In this study, we present the first spatially resolved ammonia emission estimates across the globe using a consistent methodology based solely on ammonia satellite observations from the Cross-track Infrared Sounder (CrIS) instrument and ECMWF ERA5 wind fields. The concept was evaluated for North Western Europe and demonstrated the ability to constrain annual emissions at county- to provincial-levels with most deviations within the bounds found in the error analysis. Furthermore, we show that for some regions the spatial patterns found in the satellite observations are consistent while others do not match the current inventories. Finally, the results indicate that the absolute emission levels tend to be underestimated for parts of the globe.</p>

Limits to Protein in Layer Diets Relative to Mitigating Ammonia Emission

2009 ◽  
Vol 2 (3) ◽  
pp. 143-150 ◽  
Author(s):  
Thomas Veens ◽  
Hwan Namkung ◽  
Steven Leeson
Keyword(s):  
Amino Acids ◽  
Feed Additives ◽  
Ammonia Emission ◽  
Minimal Amount ◽  
Ammonia Emissions ◽  
Microbial Conversion ◽  
Nitrogenous Compounds ◽  
Intact Proteins ◽  
Dietary Nitrogen ◽  
The Usa

Ammonia emissions from poultry farms currently contribute to air pollution and acid rain. There are no regulations in North America regarding emissions of ammonia although regulations are being drawn up in the USA and there is concern about the impacts of animal agricultural on the environment. Low crude protein (CP) diets can be an effective contributor to strategies of ammonia mitigation. Since virtually all ammonia originates from nitrogenous compounds in feed, then any attempt at ammonia mitigation must involve scrutiny of the levels of nitrogen, protein and amino acids (AA). Reducing dietary nitrogen/CP leads to reduced nitrogen in the excreta with less potential for microbial conversion to ammonia. Using low CP diets may be an economical strategy for ammonia emissions since the concept involves no special feed additives other than replacement AAs. Although AA requirements for layer hens are well known, the minimal amount of CP required is less clearly defined. AA requirements should be independent of diet CP, assuming there is adequate nitrogen for protein synthesis. However, the birds/ response in terms of reduced egg numbers and growth or change in egg composition, suggest that our estimates of amino acid supply are incorrect under these dietary regimes. Independent of bird age and AA supply, more problems are recorded when CP levels are <14-15%. It is timely to redefine the maintenance AA requirements of layers. Since the composition of eggs should give us direct estimates of needs for production, the only other unknown in formulating low CP diets is the efficiency of utilisation of free amino acids versus intact proteins.

Sign in / Sign up

Export Citation Format

Share Document