| Title | 3-Routes platform for recovery of high value products, energy and bio-fertilizer from urban biowaste: the Revenue Project |
| Abstract | This innovative Biorefinery platform is based on the integration of a mild thermal pre-treatment and a solid/liquid separation unit to parallel-integrated bioprocesses specifically selected on food waste distinctive chemical composition: a liquid fraction, rich in readily fermentable sugars, to be transformed into valuable biobased products, and a solid organic residue to enhance biomethane production generating a fully hygienized digestate to be recycled. The preliminary results in terms of VFAs yields and composition from the acidogenic stage, and the methane conversion rate from the anaerobic digestion of the solid residue, are here presented. The integration of a mild thermal pretreatment promoted the transformation and the conversion rates into volatile fatty acids through the optimization of operational pH and HRT of
the primary fermentation step. Secondary fermentation reaction as chain elongation to MCFAs (as caproic acid) occurred in the same reactor without external donor addiction probably because of the in situ formation of lactate. The solid residue fed into semi-pilot anaerobic digesters assured process stability (no acidification phenomena occurred) despite the short HRT of 20d. The weakening of the lignocellulosic matrix by the thermal pre-treatment had a positive impact on the anaerobic conversion increasing methane production (+20%), in particular during weekend, when feeding was stopped. |
| Source | DETRITUS - Multidisciplinary journal for Waste Resources and Residues 15, pp. 24–30 |
| Keywords | Food wasteBiorefineryMethaneVFAsHygienizationDownstream processing |
| Journal | DETRITUS - Multidisciplinary journal for Waste Resources and Residues |
| Editor | CISA PUBLISHER an imprint of EUROWASTE Srl, Padova/ Italy, Italia |
| Year | 2021 |
| Type | Articolo in rivista |
| DOI | 10.31025/2611-4135/2021.15092 |
| Authors | Gallipoli, A., Gianico, A., Crognale, S., Rossetti, S., Mazzeo, L., Piemonte, V., Masi, M., Braguglia, C.M. |
| Text | 455099 2021 10.31025/2611 4135/2021.15092 Food waste Biorefinery Methane VFAs Hygienization Downstream processing 3 Routes platform for recovery of high value products, energy and bio fertilizer from urban biowaste the Revenue Project Gallipoli, A., Gianico, A., Crognale, S., Rossetti, S., Mazzeo, L., Piemonte, V., Masi, M., Braguglia, C.M. Water Research Institute, National Research Council, Via Salaria km 29,300, 00015 Monterotondo Rome , Italy Department of Engineering, University Campus Biomedico of Rome, Via Alvaro del Portillo, 21, 00128 Rome, Italy Polytechnic University of Milan, Department of Chemistry, Materials Chemical Engineering, Piazza Leonardo da Vinci 32, 20133 Milano, Italy This innovative Biorefinery platform is based on the integration of a mild thermal pre treatment and a solid/liquid separation unit to parallel integrated bioprocesses specifically selected on food waste distinctive chemical composition a liquid fraction, rich in readily fermentable sugars, to be transformed into valuable biobased products, and a solid organic residue to enhance biomethane production generating a fully hygienized digestate to be recycled. The preliminary results in terms of VFAs yields and composition from the acidogenic stage, and the methane conversion rate from the anaerobic digestion of the solid residue, are here presented. The integration of a mild thermal pretreatment promoted the transformation and the conversion rates into volatile fatty acids through the optimization of operational pH and HRT of the primary fermentation step. Secondary fermentation reaction as chain elongation to MCFAs as caproic acid occurred in the same reactor without external donor addiction probably because of the in situ formation of lactate. The solid residue fed into semi pilot anaerobic digesters assured process stability no acidification phenomena occurred despite the short HRT of 20d. The weakening of the lignocellulosic matrix by the thermal pre treatment had a positive impact on the anaerobic conversion increasing methane production 20% , in particular during weekend, when feeding was stopped. 15 Published version https //digital.detritusjournal.com/articles/3 routes platform for recovery of high value products energy and bio fertilizer from urban biowaste the revenue project /1412 30/04/2021 Published Manuscript 3 Routes platform for recovery of high value products, energy and bio fertilizer from urban biowaste the Revenue Project 2021 DETRITUS 3RoutesPlatform.pdf Articolo in rivista CISA PUBLISHER an imprint of EUROWASTE Srl 2611 4135 DETRITUS Multidisciplinary journal for Waste Resources and Residues DETRITUS Multidisciplinary journal for Waste Resources and Residues simona.rossetti ROSSETTI SIMONA camillamaria.braguglia BRAGUGLIA CAMILLA MARIA andrea.gianico GIANICO ANDREA agata.gallipoli GALLIPOLI AGATA simona.crognale CROGNALE SIMONA |
