A review of ammonia emission mitigation techniques for concentrated animal feeding operations

P. M. Ndegwa, Alexander Nikolov Hristov, J. Arogo, R. E. Sheffield

Research output: Contribution to journalReview article

163 Citations (Scopus)

Abstract

Several approaches have been suggested and evaluated for reducing ammonia emissions from excreted animal manure: reducing nitrogen excretion through dietary manipulation, reducing volatile ammonia in the manure to stop ammonia loss, and segregating urine from faeces to reduce contact between urease and urine. When urine-faeces segregation is not an option, urease inhibitors can also be used to reduce or eliminate the hydrolysis of urea into ammonia. Methods for reducing the more volatile ammonia in manure include the reduction of pH, which shifts the equilibrium in favour of ammonium over ammonia; use of other chemical additives that bind ammonium-N; and the use of biological nitrification-denitrification to convert ammonium into non-volatile N-species such as nitrite, nitrate, or gaseous nitrogen. Other methods for mitigating ammonia emissions target emitting surfaces, and include capturing air (using physical covers) and treating the captured air to remove ammonia (using bio-filters or bio-covers, and scrubbers), and direct manure injection or incorporation into the soil. Manure collection facility designs and appropriate facility management are also essential for abating ammonia emissions. This paper provides a review of these approaches in the context of concentrated animal feeding operations (CAFOs).

Original languageEnglish (US)
Pages (from-to)453-469
Number of pages17
JournalBiosystems Engineering
Volume100
Issue number4
DOIs
StatePublished - Aug 1 2008

Fingerprint

concentrated animal feeding operations
Ammonia
Animals
mitigation
ammonia
Manure
Manures
animal
animal manures
manure
Ammonium Compounds
urine
ammonium
Urease
methodology
Urine
Feces
feces
Nitrogen
Facility Design and Construction

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Food Science
  • Animal Science and Zoology
  • Agronomy and Crop Science
  • Soil Science

Cite this

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A review of ammonia emission mitigation techniques for concentrated animal feeding operations. / Ndegwa, P. M.; Hristov, Alexander Nikolov; Arogo, J.; Sheffield, R. E.

In: Biosystems Engineering, Vol. 100, No. 4, 01.08.2008, p. 453-469.

Research output: Contribution to journalReview article

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AU - Hristov, Alexander Nikolov

AU - Arogo, J.

AU - Sheffield, R. E.

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