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Biochemical methane potential (BMP) of solid organic substrates: Evaluation of anaerobic biodegradability using data from an international interlaboratory study

AuthorsRaposo Bejines, Francisco ; Fernández-Cegrí, Victoria ; Rubia, M. Ángeles de la ; Borja Padilla, Rafael ; Béline, F.; Cavinato, C.; Demirer, G.; Fernández, B. ; Fernández-Polanco, M.; Frigon, J. C.; Ganesh, R.; Kaparaju, P.; Koubova, J.; Méndez, Ramón; Menin, G.; Peene, Andy; Scherer, P.; Torrijos, M.; Uellendahi, Hinrich; Wienrinck, Isabella; Wilde, V. de
KeywordsAnaerobic digestion
Environmental biotechnology
Reactor optimization
Issue DateAug-2011
PublisherSociety of Chemical Industry
CitationJournal of Chemical Technology and Biotechnology 86(8): 1088-1098 (2011)
AbstractBackground: This paper describes results obtained for different participating research groups in an interlaboratory study related to biochemical methane potential (BMP). In this research work, all experimental conditions influencing the test such as inoculum, substrate characteristics and experimental conditions were investigated. The study was performed using four substrates: three positive control substrates (starch, cellulose and gelatine), and one raw biomass material (mung bean) at two different inoculum to substrate ratios (ISR). Results: The average methane yields for starch, cellulose, gelatine and mung bean at ISR of 2 and 1 were 350 ± 33, 350 ± 29, 380 ± 42, 370 ± 36 and 370 ± 35 mL CH4 g-1 VSadded, respectively. The percentages of biotransformation of these substrates into methane were 85 ± 8, 85 ± 7, 88 ± 9, 85 ± 8 and 85 ± 8%, respectively. On the other hand, the first-order rate constants obtained from the experimental data were 0.24 ± 0.14, 0.23 ± 0.15, 0.27 ± 0.13, 0.31 ± 0.17 and 0.23 ± 0.13 d-1, respectively. Conclusion: The influence of inocula and experimental factors was nearly insignificant with respect to the extents of the anaerobic biodegradation, while the rates differed significantly according to the experimental approaches. © 2011 Society of Chemical Industry.
Identifiersdoi: 10.1002/jctb.2622
issn: 0268-2575
e-issn: 1097-4660
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