Unlocking Agro-residue Potential Via a Multi-product Integrated Biorefinery
DOI:
https://doi.org/10.13052/spee1048-5236.4536Keywords:
Biorefinery, vine pruning, agro-industrial residues, biomass, experimental results, ItalyAbstract
The intrinsic valorization of agro-industrial residues through integrated and sustainable strategies is gaining increasing attention due to its potential environmental, energetic, and economic benefits. The present study proposes a circular biorefinery model for the wine sector, aimed at converting grape pomace, wine lees, and pruning residues into biomethane and a crude bio-oil, through a synergistic combination of several processes. Both experimental and modelling results were combined to assess a novel process integration. Grape pomace and wine lees were considered as the substrate for the anaerobic digestion, biomethane was obtained from a pressure sorption adsorption process, while the off gases were used to sustain the energy demand of the digestate (hydrothermal liquefaction). Vine prunings were treated by pyrolysis and used as the adsorbent phase in the pressure sorption adsorption. The results highlight yields to gaseous, liquid, and solid products of approximately 10%, 30%, and 30%wt on dry raw material basis, respectively, demonstrating effective mass partitioning across product streams in the integrated biorefinery process. Through strategic energy integration – leveraging pyro-gas, hydro-gas, and off-gases from biomethane upgrading – the valorization of the residual digestate proved sufficient to sustain the HydroThermal Liquefaction (HTL) processing of approximately 80% of total digestate stream. This synergy not only achieves near-complete waste utilization, but also enhances overall process efficiency, reducing external energy inputs by over 70% while maintaining favourable technical viability.
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References
Barbera, E., Menegon, S., Banzato, D., D’Alpaos, C., Bertucco, A., 2019. From biogas to biomethane: A process simulation-based techno-economic comparison of different upgrading technologies in the Italian context. Renewable Energy 135, 663–673. https://doi.org/10.1016/j.renene.2018.12.052.
Biasi, R., Brunori, E., Ferrara, C., Salvati, L. 2019. Assessing impacts of climate change on phenology and quality traits of Vitis vinifera L.: The contribution of local knowledge. Plants 8(5), Article 121.
Cerdà, A., Daliakopoulos, I. N., Terol, E., Novara, A., Fatahi, Y., Moradi, E., Salvati, L., Pulido, M., 2021. Long-term monitoring of soil bulk density and erosion rates in two Prunus persica (L.) plantations under flood irrigation and glyphosate herbicide treatment in La Ribera district, Spain. Journal of Environmental Management, 282, Article 111965.
Da Ros, C., Cavinato, C., Bolzonella, D., Pavan, P., 2016. Renewable energy from thermophilic anaerobic digestion of winery residue: Preliminary evidence from batch and continuous lab-scale trials. Biomass and Bioenergy 91, 150–159. https://doi.org/10.1016/j.biombioe.2016.05.017.
Doukas, Y. E., Salvati, L., Vardopoulos, I., 2023. Unraveling the European agricultural policy sustainable development trajectory. Land 12(9), Article 1749.
Egidi, G., Cividino, S., Paris, E., Palma, A., Salvati, L., Cudlin, P., 2021. Assessing the impact of multiple drivers of land sensitivity to desertification in a Mediterranean country. Environmental Impact Assessment Review 89, Article 106594.
Fatta, V., Petrone, M.T., Giuliano, A., De Bari, I., Pierro, N., 2025. Biorefinery Assessment and Techno-economic-environmental Supply Chain Optimization for the Southern Italy Wine Agroindustry. Chemical Engineering Transactions 119, 217–222. https://doi.org/10.3303/CET25119037.
Giuliano, A., Di Giacomo, A., De Bari, I., Barletta, D., 2026. Techno-Economic Assessment of Two Process Routes for Lignin-Derived Alkylphenols and Aromatic Hydrocarbons. ACS Omega 11, 9201–9211. https://doi.org/10.1021/acsomega.5c08334.
Giuliano, A., Robinson Medici, A., Barletta, D., 2025. Integrating Techno-Economic and Environmental Criteria in the Design and Optimization of a Full Utilization Multiproduct Lignocellulosic Biorefinery. ACS Sustainable Chem. Eng. acssuschemeng.4c06590. https://doi.org/10.1021/acssuschemeng.4c06590.
Kazemzadeh-Zow, A., Zanganeh Shahraki, S., Salvati, L., Samani, N. N., 2017. A spatial zoning approach to calibrate and validate urban growth models. International Journal of Geographical Information Science 31(4), 763–782.
Klüpfel, C., Yuan, B., Biller, P., Herklotz, B., 2025. Hydrothermal liquefaction as a treatment technology for anaerobic digestate: A review. Renewable and Sustainable Energy Reviews 210, 115156. https://doi.org/10.1016/j.rser.2024.115156.
Mammarella, D., Gallucci, K., Di Giuliano, A., 2026. Biochar from waste vineyard pruning as a selective sorbent for biogas upgrading by pressure swing adsorption: Experimental and modelling study. Chemical Engineering Journal Advances 25, 101050. https://doi.org/10.1016/j.ceja.2026.101050.
Pierro, N., Giocoli, A., Motola, V., Dipinto, S., 2021. Valutazione disponibilità biomasse agro-industriali a livello nazionale e loro pubblicazione sul portale Webgis atlante delle biomasse [WWW Document]. URL https://iris.enea.it/handle/20.500.12079/56881 (accessed 10.17.23).
Quaranta, G., Salvia, R., Salvati, L., Paola, V. D., Coluzzi, R., Imbrenda, V., Simoniello, T., 2020. Long-term impacts of grazing management on land degradation in a rural community of Southern Italy: Depopulation matters. Land Degradation & Development, 31(16), 2379–2394.
Recanatesi, F., Ripa, M. N., Leone, A., Perini, L., Salvati, L., 2013. Land use, climate and transport of nutrients: Evidence emerging from the Lake Vico case study. Environmental Management, 52(2), 503–513.
Sallustio, L., Pettenella, D., Merlini, P., Romano, R., Salvati, L., Marchetti, M., Corona, P., 2018. Assessing the economic marginality of agricultural lands in Italy to support land use planning. Land Use Policy 76, 526–534.
Salvati, L., Kosmas, C., Kairis, O., Karavitis, C., Acikalin, S., Belgacem, A., Solé-Benet, A., Chaker, M., Fassouli, V., Gokceoglu, C., Gungor, H., Hessel, R., Khatteli, H., Kounalaki, A., Laouina, A., Ocakoglu, F., Ouessar, M., Ritsema, C., Sghaier, M., Sonmez, H., Taamallah, H., Tezcan, L., De Vente, J., Kelly, C., Colantoni, A., Carlucci, M., 2016. Assessing the effectiveness of sustainable land management policies for combating desertification: A data mining approach. Journal of Environmental Management 183, 754–762.
Tito, E., Landi, D., Demichelis, F., Pipitone, G., Bensaid, S., Pirone, R., 2025. Hydrothermal liquefaction of digestate from the organic fraction of municipal solid waste: Optimization of operating parameters. Energy Convers. Manage. 336. https://doi.org/10.1016/j.enconman.2025.119881.
Vardopoulos, I., Tsilika, E., Sarantakou, E., Zorpas, A. A., Salvati, L., Tsartas, P., 2021. An integrated SWOT-PESTLE-AHP model assessing sustainability in adaptive reuse projects. Applied Sciences 11(15), 7134.
Vilardi, G., Bassano, C., Deiana, P., Verdone, N., 2020. Exergy and energy analysis of biogas upgrading by pressure swing adsorption: Dynamic analysis of the process. Energy Conversion and Management 226, 113482. https://doi.org/10.1016/j.enconman.2020.113482.
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