The Effect of Biofuel Production on Swine Farm Methane and Ammonia Emissions
| Autor: | John D. Wilson, Thomas K. Flesch, Lowry A. Harper, Kim H. Weaver |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Environmental Engineering
010504 meteorology & atmospheric sciences Swine Methanogenesis 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences 7. Clean energy Methane chemistry.chemical_compound Ammonia Animals Animal feeding operation Ammonium Organic matter Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology chemistry.chemical_classification Air Pollutants Environmental engineering Agriculture Pollution Manure 6. Clean water chemistry 13. Climate action Biofuel Biofuels Environmental chemistry Environmental science |
| Zdroj: | Journal of Environmental Quality. 39:1984-1992 |
| ISSN: | 1537-2537 0047-2425 |
| Popis: | Methane (CH 4 ) and ammonia (NH 3 ) are emitted to the atmosphere during anaerobic processing of organic matter, and both gases have detrimental environmental effects. Methane conversion to biofuel production has been suggested to reduce CH 4 emissions from animal manure processing systems. The purpose of this research is to evaluate the change in CH 4 and NH 3 emissions in an animal feeding operation due to biofuel production from the animal manure. Gas emissions were measured from swine farms differing only in their manure-management treatment systems (conventional vs. biofuel). By removing organic matter (i.e., carbon) from the biofuel farms' manure-processing lagoons, average annual CH 4 emissions were decreased by 47% compared with the conventional farm. This represents a net 44% decrease in global warming potential (CO 2 equivalent) by gases emitted from the biofuel farms compared with conventional farms. However, because of the reduction of methanogenesis and its reduced effect on the chemical conversion of ammonium (NH 4 + ) to dinitrogen (N 2 ) gas, NH 3 emissions in the biofuel farms increased by 46% over the conventional farms. These studies show that what is considered an environmentally friendly technology had mixed results and that all components of a system should be studied when making changes to existing systems. |
| Databáze: | OpenAIRE |
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