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Anaerobic digestion of residual liquid effluent (brown juice) from a green biorefinery

Martinez, EJ; Mirolucci, Federico; Gomez, X; Molinuevo-Salces, Beatriz and Uellendahl, Hinrich (2018) Anaerobic digestion of residual liquid effluent (brown juice) from a green biorefinery. International Journal of Environmental Science and Technology, 2018 (1), pp. 1-10.

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This work studied the anaerobic digestion of brown juice, a liquid residual stream generated from biomass fractionation in a green biorefinery. Biomethane potential batch tests and inhibition studies of brown juice were performed during continuous processing in an upflow anaerobic sludge blanket reactor. Prolongation of the lag phase in the batch tests with increasing substrate/inoculum ratio suggested initial inhibition, which was, however, overcome by adaptation. This was indicated by high final methane yields, which were close to the theoretical maximum of up to 500 L-CH4 kg-VS−1, achieved after 15 days for most of the set-ups. Reactor operation at the organic loading rate of 13.9 g-COD L−1 day−1 and hydraulic retention time of 3 days revealed methane yields of 202 L-CH4 kg-COD−1 (307 L-CH4 kg-VS−1). Particle size analysis of the granules used in the reactor showed disintegration of the larger granules.

EPrint Type:Journal paper
Subjects:"Organics" in general
Crop husbandry > Production systems > Pasture and forage crops
Crop husbandry > Production systems
Farming Systems
Research affiliation: Denmark > Organic RDD 2 > OrganoFinery
Deposited By: Lübeck, Assoc Prof Mette
ID Code:33338
Deposited On:23 Aug 2018 07:30
Last Modified:23 Aug 2018 07:30
Document Language:English
Refereed:Peer-reviewed and accepted

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