Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Process-Based Farm Emission Model for Estimating Volatile Organic Compound Emission from California Dairies.
Author R. Zhang ; E. M. Mitloehner ; R. Malkina ; Z. Arteaga
CORP Author California Univ., Berkeley. Dept. of Environmental Science, Policy and Management.; California Environmental Protection Agency, Sacramento.; California State Air Resources Board, Sacramento. Research Div.
Year Published 2010
Report Number CARBRA-05-344
Stock Number PB2010-110794
Additional Subjects Air pollution abatement ; Emission ; Agricultural farms ; Dairy industry ; Air quality ; Environmental exposure ; Organic compounds ; Silage ; Mitigation ; Animals ; Manure ; Microbial processes ; Ethanol ; Mathematical models ; Methanol ; Alcohols ; California ; Investigations
Library Call Number Additional Info Location Last
NTIS  PB2010-110794 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/21/2011
Collation 102p
This research addresses the critical need to quantify air emissions from dairies in California with the aim of developing a process-based farm emission model that can be used as a tool for estimating and predicting rates of primary air pollutants and developing effective strategies for emission mitigation. Specifically in this project, the emissions of volatile organic compounds (VOCs) from silage and dairy manure were investigated due to their importance to the air quality problems of the state. It was found that among the many VOCs emitted, alcohols (ethanol and methanol) are the predominant VOCs emitted from silage sources and volatile fatty acids (VFAs), especially acetic acid, are the major VOCs emitted from manure sources. A computer model has been developed for predicting the ethanol emission rate from silage exposed to an open air environment. The model can be used to estimate the ethanol emission rate and total emission from the silage that contain different initial ethanol concentrations and exposed to different temperatures and air velocities. Further development and testing of the emission model is needed for its application to other scenarios such as ethanol emissions during silage mixing and from deep silage layers or piles. Experimental investigations were conducted to determine the generation and emission of VFAs and alcohols from dairy manure as it undergoes microbial degradation under different conditions that are typically encountered in free stall housing and manure storages. Ethanol generation and emission from fresh manure collected in the animal housing over a 24-hour period were measured and modeled.