Departments | |
---|---|
Book Series (92) |
1307
|
Humanities |
2291
|
Natural Sciences |
5354
|
Mathematics | 224 |
Informatics | 313 |
Physics | 975 |
Chemistry | 1354 |
Geosciences | 131 |
Human medicine | 242 |
Stomatology | 10 |
Veterinary medicine | 99 |
Pharmacy | 147 |
Biology | 830 |
Biochemistry, molecular biology, gene technology | 117 |
Biophysics | 25 |
Domestic and nutritional science | 44 |
Agricultural science | 996 |
Forest science | 201 |
Horticultural science | 20 |
Environmental research, ecology and landscape conservation | 145 |
Engineering |
1745
|
Common |
91
|
Leitlinien Unfallchirurgie
5. Auflage bestellen |
Table of Contents, Datei (34 KB)
Extract, Datei (71 KB)
This work deals with the evaluation of the performance of a multiple-stage anaerobic digestion process with respect to the degradation of organic matter and the inactivation of pathogenic and indicator organisms in liquid dairy cattle manure. Investigations were performed at bench- and full-scale.
During the three-stage mesophilic-thermophilic-mesophilic anaerobic treatment of liquid manure from cattle receiving a high-fiber diet, a comparably high methane yield of 0.24 m3 per kg of volatile solids was achieved. Given a minimum guaranteed retention time of 4 h at 55°C, the level of fecal coliforms in liquid manure was reduced to below 10 MPN per g fresh matter. The concentration of infectious oocysts of Cryptosporidium parvum was reduced by more than 5 log-units. Increasing the feeding interval from 1 to 4 h had no significant influence on the performance of the system. When the temperature in the first treatment stage was decreased from 38 to 20-25°C, the process stability in the thermophilic reactor was significantly improved while overall the methane yield and the reduction of indicator organisms remained essentially unchanged.
Based on these findings, two-stage thermophilic-mesophilic anaerobic digestion can be approved as a treatment technology for liquid manure to minimize the input of pathogenic and indicator organisms from livestock farming into the environment.
ISBN-13 (Printausgabe) | 3867276528 |
ISBN-13 (Hard Copy) | 9783867276528 |
ISBN-13 (eBook) | 9783736926523 |
Language | English |
Page Number | 144 |
Lamination of Cover | glossy |
Edition | 1 |
Volume | 0 |
Publication Place | Göttingen |
Place of Dissertation | München |
Publication Date | 2008-07-25 |
General Categorization | Dissertation |
Departments |
Agricultural science
|
Keywords | Anaerobic digestion; biogas; liquid manure; dairy cattle; pathogens; indicator organisms; mesophilic; thermophilic; cryptosporidia |