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Co-digestion of livestock effluents, energy crops and agro-waste: Feeding and process optimization in mesophilic and thermophilic conditions

TitleCo-digestion of livestock effluents, energy crops and agro-waste: Feeding and process optimization in mesophilic and thermophilic conditions
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2013
AuthorsGiuliano, Antonio, Bolzonella D., Pavan P., Cavinato C., and Cecchi F.
JournalBioresource Technology
Volume128
Pagination612-618
ISSN09608524
KeywordsAgricultural, agricultural waste, Agro-wastes, Ammonia, Anaerobic, Anaerobic co-digestion, Anaerobic digestion, Animals, article, Bacteria, Biochemical methane potential, Biogas, Bioreactor, Bioreactors, Crops, digestion, effluent, Effluents, energy crop, Energy crops, energy yield, Equipment Design, Equipment Failure Analysis, Fertilizers, Free ammonia, gas production, industrial waste, Livestock, manure, Manures, methane, Optimization, Pilot Projects, priority journal, Process optimization, Refuse Disposal, volume, waste
Abstract

In this study the optimization of the biogas yield from anaerobic co-digestion of manures and energy crops was carried out using four pilot scale CSTRs under different operating conditions. The effect on biogas yield of the partial substitution of energy crops with agro-waste was also investigated. For each substrate used during the continuous trials, BMP batch assays were also carried out to verify the maximum methane yield theoretically obtainable. Continuous operation results indicated that the co-digestion of manures, energy crops and agro-waste was viable at all operating conditions tested, with the greatest specific gas production of 0.54m3/kgVSfed at an organic load rate of 2kgTVS/m3 rd consisting of 50% manure, 25% energy crops and 25% agro-waste on VS basis. No significant differences were observed between high and low loaded reactors suggesting the possibility of either improving the OLR in existing anaerobic reactors or reducing the design volumes of new reactors. © 2012.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84870514727&doi=10.1016%2fj.biortech.2012.11.002&partnerID=40&md5=edbc04a0b0b0b92684020c651bd44af4
DOI10.1016/j.biortech.2012.11.002
Citation KeyGiuliano2013612