Assessment of the Variability of Biogas Production from Sugar Beet Silage as Affected by Movement and Loss of the Produced Alcohols and Organic Acids

Ali Heidarzadeh Vazifehkhoran, Jin Mi Triolo, Søren Ugilt Larsen, Kasper Stefanek and Sven G. Sommer
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Ali Heidarzadeh Vazifehkhoran: Institute of Chemical Engineering, Biotechnology and Environmental Technology, Faculty of Engineering, University of Southern Denmark, Campusvej 55, Odense M 5230, Denmark
Jin Mi Triolo: Institute of Chemical Engineering, Biotechnology and Environmental Technology, Faculty of Engineering, University of Southern Denmark, Campusvej 55, Odense M 5230, Denmark
Søren Ugilt Larsen: Danish Technological Institute, Agro Food Park 15, Skejby, Aarhus N 8200, Denmark
Kasper Stefanek: HedeDanmark, Jens Juuls Vej 16, Viby 8260, Denmark
Sven G. Sommer: Institute of Chemical Engineering, Biotechnology and Environmental Technology, Faculty of Engineering, University of Southern Denmark, Campusvej 55, Odense M 5230, Denmark

Energies, 2016, vol. 9, issue 5, 1-11

Abstract: The biochemical methane potential and composition of sugar beet pulp silage were investigated using samples taken from six different depths in both open and closed silos (height 3.6 m). The biochemical methane potential (BMP) of pulp silage in open silos ranged from 337 to 420 normal litre (NL) CH 4 /kg volatile solids (VS), while the BMP of pulp silage in closed silos varied between 411 and 451 NL CH 4 /kg VS. The biochemical methane potential peaked at a depth of 1.45 m with 420 NL CH 4 /kg VS for open silos and 451 NL CH 4 /kg VS for closed silos. The ethanol concentration and biochemical methane potential showed the same trend with depth throughout the silos. The energy loss correlated to the loss of volatile solids, and the depths described a linear relationship between them for both the open and closed silos (R 2 = 0.997 for the open silo and R 2 = 0.991 for the closed silo). The energy potentials and composition of beet pulp silage were highly stratified and there was a risk that the silage samples were not representative in investigations of biomass quality for energy production.

Keywords: anaerobic digestion; Beta vulgaris; ensiling; renewable energy; organic components; biomethanation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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