Effect of moisture content on ammonia emissions from broiler litter: A laboratory study

被引:66
作者
Liu, Zifei
Wang, Lingjuan
Beasley, David
Oviedo, Edgar
机构
[1] N Carolina State Univ, Raleigh, NC 27695 USA
[2] N Carolina State Univ, Dept Poultry Sci, Raleigh, NC 27695 USA
关键词
ammonia emissions; broiler litter;
D O I
10.1007/s10874-007-9076-8
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A dynamic flow-through chamber system was designed to measure ammonia emissions from broiler litter and to investigate the responses of ammonia emissions to litter moisture content under laboratory-controlled conditions. It was observed that ammonia emissions from litter were very sensitive to litter moisture content. As water was added to the litter, the total ammoniac nitrogen content (TAN) in the litter increased, and can potentially increase ammonia emissions. However, measurements of ammonia concentrations in the chamber and total nitrogen losses from litter samples all suggested that water applied to the litter also had an effect of suppressing ammonia emissions for a short time. After enough time (1 to 2 weeks) was allowed, higher moisture content in litter eventually resulted in higher ammonia emissions. It was also noticed that, at very high litter moisture content, even when more time was allowed, ammonia concentrations began to decrease as moisture content further increased.
引用
收藏
页码:41 / 53
页数:13
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