The competition for cultivable acreage between energy and food crops increases in Germany. One part of the problem are the currently installed biogas plants for energy crops, which use mainly the fruit parts of the plants. To mitigate this problem, cellulose may well be used as a main substrate. For the disintegration of cellulosic indigenous plants the principle of the gastrooesophageal vestibule system of ruminant animals - which nature has honed in millions of years of evolution as the most efficient system of cellulose disintegration - could be used. The implementation of the cellulose digestion of ruminants to a technical concept and the comparison with conventional process technology is the central point for the research project DAUMEN Energy. The objectives are to increase the efficiency of biogas technology and the prevention of food crops being used as energy crops. Laboratory tests showed, that the specific methane yield from wheat straw and spent grains could be increased through the application of rumen microorganisms to a value that was ca. 30% respectively 45% higher than that of the microorganisms of digested sludge. Also test-plants on a pilot-scale, with augmented hydrolysis and methanogenesis are described in this paper.
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Research Article|
June 01 2011
DAUMEN-Energy “Design for Augmented Methanisation” a contribution to sustainable biomethanation
P. Stopp;
*Institute for Water Quality and Waste Engineering, Leibniz University Hannover, Welfengarten 1, 30167 Hannover, Germany. E-mail: [email protected]; [email protected]; [email protected]
E-mail: [email protected]
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D. Weichgrebe;
D. Weichgrebe
*Institute for Water Quality and Waste Engineering, Leibniz University Hannover, Welfengarten 1, 30167 Hannover, Germany. E-mail: [email protected]; [email protected]; [email protected]
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K.-H. Rosenwinkel;
K.-H. Rosenwinkel
*Institute for Water Quality and Waste Engineering, Leibniz University Hannover, Welfengarten 1, 30167 Hannover, Germany. E-mail: [email protected]; [email protected]; [email protected]
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G. Breves;
G. Breves
**University of Veterinary Medicine Hannover, Institute of Physiology, Bischofsholer Damm 15, 30173 Hannover, Germany. E-Mail: [email protected]
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M. Strecker
M. Strecker
***ARES Consultants GbR, Heinrich-Kümmel-Str. 8, 30169 Hannover, Germany. E-mail: [email protected]
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Water Practice and Technology (2011) 6 (2): wpt2011031.
Citation
P. Stopp, D. Weichgrebe, K.-H. Rosenwinkel, G. Breves, M. Strecker; DAUMEN-Energy “Design for Augmented Methanisation” a contribution to sustainable biomethanation. Water Practice and Technology 1 June 2011; 6 (2): wpt2011031. doi: https://doi.org/10.2166/wpt.2011.031
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