Comprehensive monitoring of a biogas process during pulse loads with ammonia
| Autor: | Allan K. Poulsen, Anders Feilberg, Anders Peter Jensen, Alastair James Ward, Morten Køcks, Anders Peter S. Adamsen, Emiliano Bruni |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Chromatography
Renewable Energy Sustainability and the Environment chemistry.chemical_element Forestry Nitrogen Methane Isobutyric acid Ammonia chemistry.chemical_compound Anaerobic digestion chemistry Biochemistry Biogas Bioenergy Carbon dioxide Waste Management and Disposal Agronomy and Crop Science |
| Zdroj: | Bruni, E, Ward, A J, Køcks, M, Feilberg, A, Adamsen, A P, Jensen, A P & Poulsen, A K 2013, ' Comprehensive monitoring of a biogas process during pulse loads with ammonia ', Biomass & Bioenergy, vol. 56, pp. 211-220 . https://doi.org/10.1016/j.biombioe.2013.05.002 |
| DOI: | 10.1016/j.biombioe.2013.05.002 |
| Popis: | A thermophilic pilot scale anaerobic digester treating chicken litter was subjected to pulse loads of ammonia of increasing concentration. A micro gas chromatograph (μ-GC) measured CO 2 , CH 4 , N 2 , H 2 and H 2 S in the biogas. In the liquid, NH 4 -N was measured manually, volatile fatty acids (VFA) were measured manually and with Near Infrared Spectroscopy (NIRS). Within the first 7–24 h after the pulse, the concentrations of iso-butyric and iso-valeric acid increased rapidly and were the best indicators of process stress due to ammonia pulses, confirmed by multivariate analysis. NIRS was not capable of accurate prediction of VFA iso-forms most likely due to low concentrations. Propionic acid was persistent. The ammonia pulses caused an overall decrease of biogas production. The biogas composition was not a good indicator of imbalances; little correlation with VFA measurements was observed. |
| Databáze: | OpenAIRE |
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