HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (9) Citing Articles via Google Scholar Google Scholar Articles by Panetta, D. M. Articles by Lorimor, J. C. Search for Related Content PubMed PubMed Citation Articles by Panetta, D. M. Articles by Lorimor, J. C. Agricola Articles by Panetta, D. M. Articles by Lorimor, J. C. Related Collections Animal Waste Nutrient Management Air Pollution Production Agriculture Nitrogen

TECHNICAL REPORTS

Waste Management

Management Strategy Impacts on Ammonia Volatilization from Swine Manure

^a Department of Animal Science, Iowa State University, Ames, IA 50011
^b Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011

^* Corresponding author (wpowers{at}iastate.edu)

Received for publication August 12, 2004. Ammonia emitted from manure can have detrimental effects on health, environmental quality, and fertilizer value. The objective of this study was to measure the potential for reduction in ammonia volatilization from swine (Sus scrofa domestica) manure by temperature control, stirring, addition of nitrogen binder (Mohave yucca, Yucca schidigera Roezl ex Ortgies) or urease inhibitor [N-(n-butyl) thiophosphoric triamide (NBPT)], segregation of urine from feces, and pH modification. Swine manure [total solids (TS) = 7.6–11.2%, total Kjeldahl nitrogen (TKN) = 3.3–6.2 g/L, ammonium nitrogen = 1.0–3.3 g/L] was stored for 24, 48, 72, or 96 h in 2-L polyvinyl chloride vessels. The manure was analyzed to determine pre- and post-storage concentrations of TS and volatile solids (VS), TKN, and NH⁺₄–N. The concentration of accumulated ammonia N in the vessel headspace (HSAN), post-storage, was measured using grab sample tubes. Headspace NH₃ concentrations were reduced 99.3% by segregation of urine from feces (P < 0.0001). Stirring and NBPT (152 µL/L) increased HSAN concentration (119 and 140%, respectively). Headspace NH₃ concentration increased by 2.7 mg/m³ for every 1°C increase in temperature over 35°C. Slurry NH⁺₄–N concentrations were reduced by segregation (78.3%) and acidification to pH 5.3 (9.4%), and increased with stirring (4.8%) and increasing temperature (0.06 g/L per 1°C increase in temperature over 35°C). Temperature control, urine–feces segregation, and acidification of swine manure are strategies with potential to reduce or slow NH⁺₄–N formation and NH₃ volatilization.

Abbreviations: HSAN, headspace ammonia nitrogen • NBPT, N-(n-butyl) thiophosphoric triamide • TKN, total Kjeldahl nitrogen • TS, total solids • VS, volatile solids

This article has been cited by other articles:

				S. A. Roberts, H. Xin, B. J. Kerr, J. R. Russell, and K. Bregendahl Effects of Dietary Fiber and Reduced Crude Protein on Ammonia Emission from Laying-Hen Manure Poult. Sci., August 1, 2007; 86(8): 1625 - 1632. [Abstract] [Full Text] [PDF]

				G. Parent, G. Belanger, N. Ziadi, J.-P. Deland, and J. Laperriere Precipitation of Liquid Swine Manure Phosphates Using Magnesium Smelting By-Products J. Environ. Qual., March 1, 2007; 36(2): 557 - 567. [Abstract] [Full Text] [PDF]

				D. M. Panetta, W. J. Powers, H. Xin, B. J. Kerr, and K. J. Stalder Nitrogen excretion and ammonia emissions from pigs fed modified diets. J. Environ. Qual., July 1, 2006; 35(4): 1297 - 1308. [Abstract] [Full Text] [PDF]