|
|
|
If you are an ASABE member or if your employer has arranged for access to the full-text, click the underlined title below to view. Don't have access to the full text? Click here for options. Measuring odour emission rates with confidence from liquid and solid manure surfacesPublished by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org Citation: Paper number PNW05-1009, 2005 Pacific Northwest Region .Authors: Mahendran Navaratnasamy, John Feddes, Ike Edeogu Keywords: Odour, emission rates, wind tunnel, vented flux chamber, manure, odour concentration Odour emission rates measured by a wind tunnel (WT) and vented flux chamber (VFC) could differ considerably. Their accuracy is also not known. Gaseous and odour emission rates measured by using a WT were compared to that of a VFC at air flow rates of 1, 2, 15 and 30 L/s under controlled (laboratory) and actual (field) conditions. Concentrations of 1000, 2000 and 3000 mg/L of n-butanol solutions were used as stable gaseous and odour emission source under a controlled environment. Results of this study suggested that the odour concentration (ou/m3) could be measured with relatively more confidence using the VFC method. The theoretically calculated and measured emission rates were also closer when VFC method was used. The ratio of the measured to the theoretical emission rates for VFC and WT methods were 0.75 and 4. |