Environmental Effects of Using Ammonium Sulfate from Animal Manure Scrubbing Technology as Fertilizer

被引:2
作者
Rietra, Rene [1 ]
van Dijk, Kimo [1 ]
Schoumans, Oscar [1 ]
机构
[1] Wageningen Univ & Res, Wageningen Environm Res, POB 47, NL-6700 AA Wageningen, Netherlands
来源
APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 12期
关键词
ammonium sulfate; GHG; NH3; fertilizer; animal manure; GRASSLAND; SULFUR; EMISSION; VOLATILIZATION;
D O I
10.3390/app14124998
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Processed manure products have the potential to substitute chemical fertilizers and the use of these products may increase resource efficiency in the food system and decrease emissions of ammonia (NH3) and greenhouse gasses (GHG). The yields of maize and grass, as well as emissions, have been determined from a processed manure product: liquid ammonium sulfate from nitrogen stripping animal manure (AS), in comparison to a regular mineral fertilizer, calcium ammonium nitrate (CAN), in a greenhouse experiment and a field demonstration using a sandy and a clay soil. NH3 emissions were determined by comparing AS with a dairy manure as a reference. The yield of both crops, their nitrogen nutrient use efficiency (NUE), and nitrous oxide (N2O) emissions were not significantly different, while NH3 emission was lower from AS compared to the dairy manure. As a side-effect, the sulfur (S) contents of the grass in the fields fertilized with AS were much higher than in the non-fertilized control. We conclude that AS, produced here with a pH < 5.5, can be used as an alternative for CAN in Dutch dairy systems, or similar other system, if S leaching losses do not pose a problem for the environment. Meanwhile, care should be taken not to exceed S in feed above toxic levels for ruminants.
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页数:19
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