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Correlations between the composition of liquid fraction of full-scale digestates and process conditions

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dc.citedby14
dc.contributor.authorAkhiar A.en_US
dc.contributor.authorGuilayn F.en_US
dc.contributor.authorTorrijos M.en_US
dc.contributor.authorBattimelli A.en_US
dc.contributor.authorShamsuddin A.H.en_US
dc.contributor.authorCarr�re H.en_US
dc.contributor.authorid57192410921en_US
dc.contributor.authorid57063238500en_US
dc.contributor.authorid6602763213en_US
dc.contributor.authorid6506098955en_US
dc.contributor.authorid35779071900en_US
dc.contributor.authorid7003438084en_US
dc.date.accessioned2023-05-29T09:09:04Z
dc.date.available2023-05-29T09:09:04Z
dc.date.issued2021
dc.descriptionAgricultural robots; Anaerobic digestion; Biogas; Chemical equipment; Chemical oxygen demand; Crops; Fertilizers; Separation; Aromatic molecules; Hydraulic retention time; Liquid separation; Process condition; Process parameters; Separation process; Treatment and disposal; Waste activated sludges; Liquidsen_US
dc.description.abstractFast development of centralized agricultural biogas plants leads to high amounts of digestate production. The treatment and disposal of liquid fractions after on-site digestate solid� liquid separation remains problematic due to their high organic, nutrient and aromatic contents. This work aims to study the variability of the remaining compounds in the digestate liquid fractions in relation to substrate origin, process parameters and solid�liquid separation techniques. Twenty-nine digestates from full-scale codigestion biogas plants and one waste activated sludge (WAS) digestate were collected and characterized. This study highlighted the combined effect of the solid�liquid separation process and the anaerobic digestion feedstock on the characteristics of liquid fractions of digestates. Two major clusters were found: (1) liquid fractions from high efficiency separation process equipment (e.g., centrifuge and others with addition of coagulant, flocculent or polymer) and (2) liquid fractions from low efficiency separation processes (e.g., screw press, vibrating screen and rotary drum), in this latter case, the concentration of chemical oxygen demand (COD) was associated with the proportion of cow manure and energy crops at biogas plant input. Finally, SUVA254, an indicator for aromatic molecule content and the stabilization of organic matter, was associated with the hydraulic retention time (HRT). � 2021 by the authors. Licensee MDPI, Basel, Switzerland.en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo971
dc.identifier.doi10.3390/en14040971
dc.identifier.issue4
dc.identifier.scopus2-s2.0-85106405244
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85106405244&doi=10.3390%2fen14040971&partnerID=40&md5=57822d1f8c143a00a2972401aa46440c
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/26323
dc.identifier.volume14
dc.publisherMDPI AGen_US
dc.relation.ispartofAll Open Access, Gold, Green
dc.sourceScopus
dc.sourcetitleEnergies
dc.titleCorrelations between the composition of liquid fraction of full-scale digestates and process conditionsen_US
dc.typeArticleen_US
dspace.entity.typePublication
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