Journal
WASTE MANAGEMENT & RESEARCH
Volume 32, Issue 3, Pages 207-214Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0734242X14521680
Keywords
Anaerobic digestion; organic waste treatment; biogas; artichoke
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The aim of this work was to investigate anaerobic digestibility of artichoke waste resulting from industrial transformation. A series of batch anaerobic digestion tests was performed in order to evaluate the biochemical methane potential of the matrix in respect of the process. A comparison of the different performances of the laboratory-scale reactors operating in mesophilic conditions and utilizing three different values of the inoculum/substrate ratio was carried out. The best performance was achieved with an inoculum/substrate ratio of 2. Artichoke-processing byproducts showed a classical organic waste decomposition behaviour: a fast start-up phase, an acclimation stage, and a final stabilization phase. Following this approach, artichoke waste reached chemical oxygen demand removal of about 90% in 40 days. The high methane yield (average 408.62 mL CH4 g(vs)(-1) voltatile solids), makes artichoke waste a good product to be utilized in anaerobic digestion plants for biogas production.
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