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BAJWA, KANWARDEEP SINGH. Measurements and Modeling of Emissions, Dispersion and Dry Deposition of Ammonia from Swine Facilities.
 

Summary: ABSTRACT
BAJWA, KANWARDEEP SINGH. Measurements and Modeling of
Emissions, Dispersion and Dry Deposition of Ammonia from Swine Facilities.
(Under the direction of Dr. Viney P. Aneja and Dr. S. Pal Arya).
Ammonia has recently gained importance for its increasing atmospheric
concentrations and its role in the formation of aerosols. Studies have shown increasing
atmospheric concentration levels of NH3 and NH4
+
, especially in the regions of
concentrated animal feeding operations. Atmospheric inputs of reduced nitrogen as
ammonia and ammonium by dry and wet deposition may represent a substantial
contribution to the acidification of semi natural ecosystems and could also affect sensitive
coastal ecosystems and estuaries. The anaerobic lagoon and spray method, commonly
used for waste storage and disposal in confined animal feeding operations (CAFO), is a
significant source of ammonia emissions. An accurate emission model for ammonia from
aqueous surfaces can help in the development of emission factors. Study of dispersion
and dry deposition patterns of ammonia downwind of a hog farm will help us to
understand how much ammonia gets dry deposited near the farm, and how remaining
ammonia gets transported farther away. An experimental and modeling study is
conducted of emissions, dispersion and dry deposition of ammonia taking one swine farm

  

Source: Aneja, Viney P. - Department of Marine, Earth and Atmospheric Sciences, North Carolina State University

 

Collections: Environmental Sciences and Ecology; Geosciences