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DatoValore
TitleA novel cascade biorefinery approach to transform food waste into valuable chemicals and biogas through thermal pretreatment integration
AbstractA novel biorefinery platform integrating thermal pretreatment and solid-liquid separation unit is here proposed to fully exploit food waste (FW) potential for production of valuable chemicals and energy through semi-continuous anaerobic bioconversion. The liquid fraction deriving from raw or pretreated FW, was fermented into volatile fatty acids (VFAs, from acetic to caproic acid) while the residual fraction was converted into biomethane. Thermal pretreatment effectively extracted a portion of the macromolecular organics, especially starch, to the liquid phase, promoting acidogenic fermentation and chain elongation pathways (0.43 gVFA g-1VSfed and 0.58 gVFA g-1VSfed with raw and pretreated extract, respectively). In parallel, anaerobic digestion of solid residue in 10 L reactors showed process stability and higher conversion rate for the pretreated residue (0.31 against 0.26 Nm3CH4 kg-1VSfed). The mass-transfer balance coupled with the economic assessment, calculated in terms of direct gross added value, indicated promising revenues by integrating the thermal upstream treatment.
SourceBioresource technology 338
KeywordsFood WasteThermal HydrolysisVolatile Fatty AcidsAnaerobic DigestionMass Transfer Balance
JournalBioresource technology
EditorElsevier Applied Science,, Barking, Regno Unito
Year2021
TypeArticolo in rivista
DOI10.1016/j.biortech.2021.125517
AuthorsAndrea Gianico, Agata Gallipoli, Giulio Gazzola, Carlo Pastore, Barbara Tonanzi, Camilla M. Braguglia
Text455284 2021 10.1016/j.biortech.2021.125517 Food Waste Thermal Hydrolysis Volatile Fatty Acids Anaerobic Digestion Mass Transfer Balance A novel cascade biorefinery approach to transform food waste into valuable chemicals and biogas through thermal pretreatment integration Andrea Gianico, Agata Gallipoli, Giulio Gazzola, Carlo Pastore, Barbara Tonanzi, Camilla M. Braguglia National Research Council of Italy, Water Research Institute, CNR IRSA, Area della Ricerca RM1, Via Salaria km 29.300, Monterotondo, Rome 00015, Italy National Research Council of Italy, Water Research Institute, CNR IRSA, Via F. de Blasio 5, Bari 70132, Italy A novel biorefinery platform integrating thermal pretreatment and solid liquid separation unit is here proposed to fully exploit food waste FW potential for production of valuable chemicals and energy through semi continuous anaerobic bioconversion. The liquid fraction deriving from raw or pretreated FW, was fermented into volatile fatty acids VFAs, from acetic to caproic acid while the residual fraction was converted into biomethane. Thermal pretreatment effectively extracted a portion of the macromolecular organics, especially starch, to the liquid phase, promoting acidogenic fermentation and chain elongation pathways 0.43 gVFA g 1VSfed and 0.58 gVFA g 1VSfed with raw and pretreated extract, respectively . In parallel, anaerobic digestion of solid residue in 10 L reactors showed process stability and higher conversion rate for the pretreated residue 0.31 against 0.26 Nm3CH4 kg 1VSfed . The mass transfer balance coupled with the economic assessment, calculated in terms of direct gross added value, indicated promising revenues by integrating the thermal upstream treatment. 338 Published version https //www.sciencedirect.com/science/article/pii/S0960852421008579 Manuscript A novel cascade biorefinery approach to transform food waste into valuable chemicals and biogas through thermal pretreatment integration 2021 BITE A novel cascade biorefinery Gianico et al.pdf Articolo in rivista Elsevier Applied Science, 0960 8524 Bioresource technology Bioresource technology Bioresour. technol. Bioresource technology. barbara.tonanzi TONANZI BARBARA GAZZOLA GIULIO camillamaria.braguglia BRAGUGLIA CAMILLA MARIA andrea.gianico GIANICO ANDREA carlo.pastore PASTORE CARLO agata.gallipoli GALLIPOLI AGATA