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Gewählte Doctoral Thesis:

Vitaliy Kryvoruchko (2005): Methanbildungspotential von Wirtschaftsdüngern aus der Rinderhaltung und Wirkung der Abdeckung und anaeroben Behandlung auf klimarelevante Emissionen bei der Lagerung von Milchviehflüssigmist.
Doctoral Thesis, BOKU-Universität für Bodenkultur. UB BOKU obvsg

Data Source: ZID Abstracts
Abstract:
The influence of animal diet, age and animal performance on the maximum methane production capacity of cattle excreta and effects of anaerobic digestion and different levels of covering of dairy cattle slurry on ammonia and GHG emissions during storage was investigated. Dairy cattle were divided into six groups which corresponded to six contrasting levels of feeding and milk production. A high protein content in the diet and in the dairy cattle exkreta resalted in a higher methane production. The animal diet and age of cattle had a significant influence on the maximum methane production capacity of cattle excreta. Excreta of young cattle produced 70 % more methane than excreta from older cattle. Emissions were measured at the research station of the University of Natural Resources and Applied Life Sciences from February to October 2002. Anaerobic digestion was found to be an effective mitigation option for methane and greenhouse gas emissions from slurry stores. Covering slurry stores with a wooden lid signifikantly reduced GHG and ammonia emissions. In conclusion, it is recommended that slurry tanks, and particularly those used for storage of slurry treated in biogas plants, are equipped with a cover. This will reduce CH4 release into the atmosphere, as well as NH3 and N2O emissions.


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