Influence of carbon and buffer amendment on ammonia volatilization in composting

被引:104
作者
Liang, Y [1 ]
Leonard, JJ
Feddes, JJR
McGill, WB
机构
[1] Iowa State Univ, Dept Agr & Biosyst Sci, Ames, IA 50011 USA
[2] Univ Alberta, Dept Agr Food & Nutr Sci, Edmonton, AB T6G 2P5, Canada
[3] Univ No British Columbia, Coll Sci & Management, Prince George, BC V2N 4Z9, Canada
关键词
nitrogen loss; dairy manure; carbon amendment; buffer amendment;
D O I
10.1016/j.biortech.2005.03.041
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Laboratory-scale experiments were carried out to test a mathematical model of the nitrogen dynamics in a composting process. The main ingredients of composting materials were wheat straw and dairy manure. The influence of (a) two carbon amendments, i.e. molasses and office paper, and (b) two chemicals forming buffer solutions on ammonia volatilization were investigated. Nitrogen losses amounted to 12-25% of initial nitrogen, in which ammonia volatilization accounted for 60-99%. Addition of molasses, a readily available form of carbon, reduced cumulative ammonia emissions substantially, but office paper, i.e. cellulose, had only a small influence. The addition of buffering chemicals did not significantly reduce ammonia volatilization. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:748 / 761
页数:14
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