Control of ammonia air pollution through the management of thermal processes in cowsheds

Bleizgys, Rolandas; Bagdonienė, Indrė

doi:10.1016/j.scitotenv.2016.05.017

Cited by 16 publications

(8 citation statements)

References 30 publications

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“…Reduction in the intensity of ammonia volatilization is well achieved by means of controlling thermal processes within a barn and reducing air temperature (which is particularly important under temperatures above 20 o C). Decreasing the average annual air temperature (11.3 o C) by one degree in a semi-warm box-type dairy barn, NH3 emission is observed to decrease by 10 % (Bleizgys et al, 2016). As the ventilation rate is increased, the concentration of ammonia decreases in a barn whereas, NH3 emission is observed to increase disproportionally (Philippe et al, 2011;Samer et al, 2012).…”

Section: Introductionmentioning

confidence: 87%

Reduction of Ammonia Emissions From Cattle Manure Using Biopreparations

Bleizgys

Mažeikienė

2018

Proccedings of International Scientific Conference "RURAL DEVELOPMENT 2017"

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Experimental studies performed at the laboratory enabled to find out the effect of the biopreparation on the process of ammonia volatilization from manure. Adding biopreparation to manure was found to slow down ammonia emission from manure. Depending on the manure composition, temperature of the environment, and duration of exposure to the biopreparation, the emission was found to decrease by up to 22 %. The maximum effect was observed on the day 6–14, whereas 30 days after biopreparation’s use its effect was significantly decreased. The effect of biopreparation on ammonia volatilization was observed to be higher under more intensive ammonia emissions, i.e. when the manure was fresh, with no crust formed on its surface, under high air flow velocity above the manure and high ammonia concentration gradient in the surface of the manure. Use of the biopreparation is highly recommended for reduction of ammonia emissions in litter-free barns where liquid manure accumulates. Its use is consistent with the modernization tendencies to implement litter-free liquid manure technologies.

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Section: Introductionmentioning

confidence: 87%

Reduction of Ammonia Emissions From Cattle Manure Using Biopreparations

Bleizgys

Mažeikienė

2018

Proccedings of International Scientific Conference "RURAL DEVELOPMENT 2017"

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“…Ammonia emissions were measured from untreated poultry manure, poultry manure after pre-treatment with biological methods, and anaerobic digestates. The GME700 (SICK MAIHAK GmbH, Meersburg, Germany) analyzer was used to measure ammonia gas concentration by laser spectroscopy in the measurement range for NH 3 from 0 ppm to 2000 ppm ( Figure 1) [24].…”

Section: Ammonia Emission Measurementsmentioning

confidence: 99%

Influence of Aerobic Pretreatment of Poultry Manure on the Biogas Production Process

et al. 2020

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Anaerobic digestion of poultry manure is a potentially-sustainable means of stabilizing this waste while generating biogas. However, technical, and environmental protection challenges remain, including high concentrations of ammonia, low C/N ratios, limited digestibility of bedding, and questions about transformation of nutrients during digestion. This study evaluated the effect of primary biological treatment of poultry manure on the biogas production process and reduction of ammonia emissions. Biogas yield from organic matter content in the aerobic pretreatment groups was 13.96% higher than that of the control group. Biogas production analysis showed that aerobic pretreatment of poultry manure has a positive effect on biogas composition; methane concentration increases by 6.94–7.97% after pretreatment. In comparison with the control group, NH3 emissions after aerobic pretreatment decreased from 3.37% (aerobic pretreatment without biological additives) to 33.89% (aerobic pretreatment with biological additives), depending on treatment method.

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“…Lowering the cow barn temperature and the airflow rate above the manure surface [4][5][6], as well as cutting the manure-soiled area [7; 8] may reduce the ammonia emissions. The laboratory tests have verified the effect of these factors.…”

Section: Introductionmentioning

confidence: 99%

“…The laboratory tests have verified the effect of these factors. It was established that higher air and manure surface temperature resulted in an exponential increase in ammonia emissions [5], while the dependence of emission on the air velocity was best expressed by a second-degree polynomial [4]. At the same time, excessive ventilation reduction leads to the indoor air quality degradation [9].…”

Section: Introductionmentioning

confidence: 99%

Ammonia emission and moisture evaporation from cattle manure with different moisture and excrement content

Gordeev

Mironova

Mironov

2020

19th International Scientific Conference Engineering for Rural Development Proceedings

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Ammonia emission and moisture evaporation from manure affect the climate inside the cow barn. According to our previous study, the manure surface area is of greater importance than its layer thickness in this respect. However, in practice, the manure passage area cannot be reduced in the loose housing of cows in cubicles. Therefore, other factors contributing to emission abatement are to be considered. The study objective was to identify the relation between the ammonia emission and moisture evaporation from cattle manure and the manure moisture and excrement content. For this purpose, a laboratory-scale set-up was designed. It consisted of a case with a fan installed and an exhaust pipe with a gas detector and an air velocity transmitter. The initial relative moisture content of cow excrement was 89 %. Peat with 57 % moisture content was added to reduce it, and tap water was added to increase it. The mass of each sample was 1 kg. In the experiment, the tested sample was placed in the set-up; the air was blown over its surface by the fan and the sensors in the pipe recorded the ammonia concentration and the airflow rate. Each experiment lasted for 30 minutes. The ammonia emission was calculated by the common methodology. The moisture evaporation was determined by the change in the sample mass during the experiment. The study results showed that the average ammonia emission from the initial excrement with 89 % moisture content was 68.26 mg•h -1 . When peat was added and the mixture moisture content reduced to 84 %, the average ammonia emission was 41.57 mg•h -1 . When water was added and the mixture moisture content increased to 94 %, the average ammonia emission was 32.93 mg•h -1 . In terms of the excrement unit, the ammonia emission decreased by 30.1 % when peat was added and only by 9 % when water was added. Therefore, the animal housing on bedding is preferable to reduce the ammonia emission from manure and to create a more favorable climate in the cow barn.

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Control of ammonia air pollution through the management of thermal processes in cowsheds

Cited by 16 publications

References 30 publications

Reduction of Ammonia Emissions From Cattle Manure Using Biopreparations

Reduction of Ammonia Emissions From Cattle Manure Using Biopreparations

Influence of Aerobic Pretreatment of Poultry Manure on the Biogas Production Process

Ammonia emission and moisture evaporation from cattle manure with different moisture and excrement content

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