Eliminating hog manure odor in lagoons, barns with CBPA 98 High levels of noxious gases in close confinement hog facilities can be dangerous to humans and animals alike. Generally, gases and odors produced in close confinement hog facilities are the result of bacterial action on biodegradable parts of hog waste.
Gases produced in greatest volume are methane, carbon dioxide, ammonia and hydrogen sulfide.
There is also a complicated group of volatile organic substances that contribute to the odor. These substances include amines, mercaptans, alcohols, carbonyls and sulfides in trace amounts. Methane, the gas produced in greatest volume during the decomposition process, results from organic acids being degraded. This gas usually escapes to the atmosphere and is a potential air pollutant. Carbon dioxide is the second most abundant gas produced as organic acids are degraded.