Air Emissions from Animal Feeding Operations Current Knowledge, Future Needs (2003) / Chapter Skim
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Appendix F: Ammonia Emissions from Manure Storage
Appendix F: Ammonia Emissions from Manure Storage
Pages 217-221
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From page 217... ...
(1994) developed equations for predicting the production rate of ammonia in swine manure storage as a function of time and depth in the manure.
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From page 218... ...
in the water. The emission rate of ammonia from manure on the kth day can be calculated using the following mass-transfer equation, MNH3-N k = 86,400 Kit F [TANS, where M is g/m2, 86,400 is the number of seconds in a day, Kid is the mass transfer coefficient in meters per second, F is the fraction factor for free ammonia in total ammonia and has a value of 0-1, and [TANS is the concentration of total ammoniacal nitrogen in milligrams per liter after k days.
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From page 219... ...
k_~ + TMTAN,k /V. The mass-transfer coefficient KI is a function of manure temperature, air temperature, wind velocity, and relative humidity.
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From page 220... ...
e: Taq where M is the molecular weight (grams per mole) , Ta and Taq are the air and water temperatures (kelvin)
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From page 221... ...
NH3 Ta 221 NH3 molecular diffusion volume, 14.9 cm3/mol Air temperature, K, mg/1 [TAN] k Total ammoniacal concentration at the manure surface on the kth day of storage Water (manure)
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