The anaerobic digestion of pig carcase with or without sugar beet pulp, as a novel on-farm disposal method
| Autor: | Michael K. Theodorou, R. G. Wilkinson, Marie E. Kirby, Jayne Powles, J. A. Huntington, Carole M. Brizuela |
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| Rok vydání: | 2017 |
| Předmět: |
Farms
Swine 020209 energy 02 engineering and technology 010501 environmental sciences engineering.material Raw material medicine.disease_cause 01 natural sciences Bioreactors Biogas 0202 electrical engineering electronic engineering information engineering medicine Animals Food science Anaerobiosis Waste Management and Disposal 0105 earth and related environmental sciences biology Chemistry Pulp (paper) Clostridium perfringens biology.organism_classification Anaerobic digestion Biofuels Digestate engineering Sugar beet Beta vulgaris Sugars Methane Mesophile |
| Zdroj: | Waste management (New York, N.Y.). 75 |
| ISSN: | 1879-2456 |
| Popis: | Anaerobic digestion was investigated as a potential method for on-farm disposal of fallen stock (pig carcases), degrading the carcase material to produce biogas and digestate. The effects of feedstock (sugar beet pulp or pig carcase material or a 50:50 mix) and organic loading rate (50 g-TS L−1 or 100 g-TS L−1), during mesophilic (35 °C) anaerobic digestion were investigated. Anaerobic digestion was achieved for all experimental treatments, however the pig carcase material at the higher organic loading rate produced the second highest methane yield (0.56 Nm3 kg-VS−1 versus a range of 0.14–0.58 Nm3 kg-VS−1 for other treatments), with the highest percentage of methane in total biogas (61.6% versus a range of 36.1–55.2% for all other treatments). Satisfactory pathogen reduction is a legislative requirement for disposal of carcase material. Pathogens were quantified throughout the anaerobic digestion process. Enterococcus faecalis concentrations decreased to negligible levels (2.8 log10 CFU g-TS−1), whilst Clostridium perfringens levels remained unaffected by treatment throughout the digestion process (5.3 ± 0.2 log10 CFU g-TS−1). |
| Databáze: | OpenAIRE |
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