Ammonia emissions and mitigation from a concrete yard used by cattle

A - Papers appearing in refereed journals

Burchill, W., Reville, F., Misselbrook, T. H., O'Connell, C. and Lanigan, G. J. 2019. Ammonia emissions and mitigation from a concrete yard used by cattle. Biosystems Engineering. 184, pp. 181-189.

AuthorsBurchill, W., Reville, F., Misselbrook, T. H., O'Connell, C. and Lanigan, G. J.
Abstract

Livestock excreta deposition on concrete farmyards has been identified as an important source of ammonia (NH3) emissions from agriculture. The objective of this study was to quantify the effect of urine application rate and four cleaning strategies on NH3 emissions from excreta deposited on a concrete yard. Three experiments were conducted on a concrete
yard over a three week period in August 2016. Experiment 1 consisted of 1 kg dung applied with either (i) 0.67 l urine (1:0.67), (ii) 1 l urine (1:1) or (iii) 2 l urine (1:2). In experiments 2 and 3 the treatments were (i) non cleaned control, (ii) cleaned after 1 h and (iii) cleaned after 3 h. The cleaning method in experiment 2 and 3 was pressure washing and scraping, respectively. Ammonia emissions were measured using wind-tunnels for 72 h. Cumulative NH3 emissions increased linearly with increasing urine N rate and emission factors ranged from 46% to 67% of urine urea-N applied and from 22% to 29% of total N applied. In experiment 2 and 3 the greatest reduction in cumulative NH3 emissions was obtained from pressure washing at 1 h which reduced emissions compared to the non-cleaned control by 91%. Pressure washing at 3 h reduced emissions by 80% while scraping after 1 h and 3 h reduced emissions by 78% and 54%, respectively. Farmers should be encouraged to clean their animal handling yards as soon as possible after use in order to maximise reductions in NH3 emissions from this source.

KeywordsAmmonia volatilisation; Urine; Dung; Concrete yards; Mitigation
Year of Publication2019
JournalBiosystems Engineering
Journal citation184, pp. 181-189
Digital Object Identifier (DOI)doi:10.1016/j.biosystemseng.2019.06.007
Open accessPublished as non-open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeBBS/E/C/000I0120
Publisher's version
File Access Level
Controlled
Output statusPublished
Publication dates
Online01 Jul 2019
Publication process dates
Accepted05 Jun 2019
PublisherAcademic Press Inc Elsevier Science
ISSN1537-5110

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