In a new study, it has been found that oil spray can reduce greenhouse gas emissions from the atmosphere.
Greenhouse gas emissions can potentially become a limiting factor in the development and sustainability of animal production and technologies are needed to mitigate pollutant gas emissions.
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Scientists at Purdue University and the University of Missouri have investigated oil spray on air pollutant emissions from pig barns in northern Missouri.
Specifically, they studied the quantity and characteristics of methane and carbon dioxide emissions from two commercial pig finishing barns and tested three oil spray techniques-vegetable oil sprinkling, essential oil misting, and misting of essential oil with water-to reduce these emissions.
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Carbon dioxide was produced from pig exhalation, manure decomposition, and combustion heaters and was also released from recycled lagoon effluent.
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A state-of-the-art mobile laboratory monitoring system was set up between two barns and connected to the barns via tubing and cables.
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Air samples were taken at the exhaust fans of the two barns and from outdoor background and pumped into the mobile laboratory via tubing.
Concentrations of methane and carbon dioxide in the sample air were measured continuously with two gas analyzers.
The study revealed average emissions of 32.5 g methane and 15.8 g carbon dioxide per day per animal unit (500 kg animal live weight) from the two barns.
Treatments of oil sprinkling, misting of essential oils, and misting of essential oils with water reduced the average emissions of methane by 20 percent and of carbon dioxide by 19 percent.
Barn methane and carbon dioxide concentrations and emission rates were affected by diel and seasonal fluctuations of ambient temperature.
Source-ANI
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