VALENTINA SEGNERI

PhD Graduate

PhD program:: XXXVII

supervisor: Prof. Ing. Nicola Verdone

Thesis title: Simulation and advanced modeling of innovative waste-to-chemicals plants in the circular economy: Gasification of Refuse Derived Fuel

The increasing awareness of environmental issues and the need to reduce landfill use have driven research towards innovative waste valorization technologies. In this context, high-temperature gasification with direct melting (HT&DMG) represents a promising solution for converting municipal and industrial solid waste into high-quality syngas, with applications in Waste-to-Chemicals (WtC) processes. This research focuses on advanced modeling and simulation of waste gasification processes through three complementary approaches: - Kinetic simulation in Aspen Plus to predict syngas composition as a function of operating conditions. - Dynamic numerical modeling in Comsol Multiphysics to analyze temporal variations of physicochemical properties and optimize mass and energy balances. - Three-dimensional CFD modeling in Ansys Fluent to study fluid dynamics and thermal distribution within the reactor. The integration of these tools enabled the optimization of operating parameters, enhanced syngas yield, and minimized the formation of undesirable by-products such as tar and dioxins. The results contribute to the advancement of gasification technologies for resource recovery from waste, promoting a more sustainable and efficient approach to producing chemical feedstocks from alternative sources.

Research products

11573/1717370 - 2024 - Room temperature oxidation of gaseous formaldehyde over silver-doped manganese oxide catalyst

Badshah, M.; Mehdi, S.; Alam, K.; Khan, K. I.; Abbas, I.; Iezzi, L.; Segneri, V.; Stoller, M. - 01a Articolo in rivista

paper: CHEMICAL PAPERS (Bratislava : Institute of Chemistry, Slovak Academy of Sciences; Warszawa : Versita; Heidelberg : Springer, 2006-) pp. 4383-4393 - issn: 1336-9075 - wos: WOS:001187477000002 (0) - scopus: 2-s2.0-85188103029 (0)

11573/1718437 - 2024 - Power-to-Gas: Process analysis and control strategies for dynamic catalytic methanation system

Colelli, L.; Bassano, C.; Verdone, N.; Segneri, V.; Vilardi, G. - 01a Articolo in rivista

paper: ENERGY CONVERSION AND MANAGEMENT (Elsevier Science Limited:Oxford Fulfillment Center, PO Box 800, Kidlington Oxford OX5 1DX United Kingdom:011 44 1865 843000, 011 44 1865 843699, EMAIL: asianfo@elsevier.com, tcb@elsevier.co.UK, INTERNET: http://www.elsevier.com, http://www.elsevier.com/locate/shpsa/, Fax: 011 44 1865 843010) pp. - - issn: 0196-8904 - wos: WOS:001205798600001 (10) - scopus: 2-s2.0-85186710817 (12)

11573/1725124 - 2024 - Optimization of Power to Gas system with cooled reactor for CO2 methanation: Start-up and shut-down tests with Ru-based and Ni-based kinetics

Colelli, L.; Verdone, N.; Bassano, C.; Segneri, V.; Vilardi, G. - 01a Articolo in rivista

paper: ENERGY ([Oxford].]: Elsevier Ltd.) pp. - - issn: 1873-6785 - wos: (0) - scopus: 2-s2.0-85207638342 (1)

11573/1680760 - 2023 - E-fuels, technical and economic analysis of the production of synthetic kerosene precursor as sustainable aviation fuel

Colelli, L.; Segneri, V.; Bassano, C.; Vilardi, G. - 01a Articolo in rivista

paper: ENERGY CONVERSION AND MANAGEMENT (Elsevier Science Limited:Oxford Fulfillment Center, PO Box 800, Kidlington Oxford OX5 1DX United Kingdom:011 44 1865 843000, 011 44 1865 843699, EMAIL: asianfo@elsevier.com, tcb@elsevier.co.UK, INTERNET: http://www.elsevier.com, http://www.elsevier.com/locate/shpsa/, Fax: 011 44 1865 843010) pp. - - issn: 0196-8904 - wos: WOS:000999212200001 (28) - scopus: 2-s2.0-85159262371 (36)

11573/1689626 - 2023 - Sustainable production of hydrogen, pyridine and biodiesel from waste-to-chemicals valorization plant: Energy, exergy and CO2-cycle analysis

Rispoli, Andrea Liberale; Tizzano, Chiara; Verdone, Nicola; Segneri, Valentina; Vilardi, Giorgio - 01a Articolo in rivista

paper: JOURNAL OF CLEANER PRODUCTION (Oxford : ELSEVIER SCI LTD Oxford : Butterworth-Heinemann, 1993-) pp. 139051- - issn: 0959-6526 - wos: WOS:001085836400001 (2) - scopus: 2-s2.0-85173574231 (2)

11573/1686536 - 2023 - Synthesis and CO2 adsorption capacity of biomass waste functionalized by nanoparticles

Rosa, Domenico; Segneri, Valentina; Di Palma, Luca; Vilardi, Giorgio - 01a Articolo in rivista

paper: CHEMICAL ENGINEERING TRANSACTIONS (Milano : Sauro Pierucci Milano : AIDIC) pp. 127-132 - issn: 2283-9216 - wos: (0) - scopus: 2-s2.0-85167680862 (4)

11573/1686535 - 2023 - Nanoparticles Used for CO2 Capture by Adsorption: a Review

Segneri, Valentina; Trinca, Antonio; Libardi, Nelson; Colelli, Leonardo; Micciancio, Mattia; Vilardi, Giorgio - 01a Articolo in rivista

paper: CHEMICAL ENGINEERING TRANSACTIONS (Milano : Sauro Pierucci Milano : AIDIC) pp. 133-138 - issn: 2283-9216 - wos: (0) - scopus: 2-s2.0-85166907661 (7)

11573/1686534 - 2023 - Nanocatalysts Used for Tar Cracking Present in the Syngas from Gasification of Municipal Solid Waste

Trinca, Antonio; Segneri, Valentina; Ferrasse Jean, H.; Parisi, Mariapaola; Patrizi, Daniele; Verdone, Nicola - 01a Articolo in rivista

paper: CHEMICAL ENGINEERING TRANSACTIONS (Milano : Sauro Pierucci Milano : AIDIC) pp. - - issn: 2283-9216 - wos: (0) - scopus: 2-s2.0-85166932542 (3)

11573/1669945 - 2022 - An overview of waste gasification and syngas upgrading processes

Segneri, V.; Ferrasse, J. H.; Trinca, A.; Vilardi, G. - 01m Editorial/Introduzione in rivista

paper: ENERGIES (Basel : Molecular Diversity Preservation International) pp. - - issn: 1996-1073 - wos: WOS:000851044100001 (4) - scopus: 2-s2.0-85137925196 (5)

11573/1669948 - 2022 - Recovery of solid waste in industrial and environmental processes

Trinca, A.; Segneri, V.; Mpouras, T.; Libardi, N.; Vilardi, G. - 01m Editorial/Introduzione in rivista

paper: ENERGIES (Basel : Molecular Diversity Preservation International) pp. 7418- - issn: 1996-1073 - wos: WOS:000866838300001 (0) - scopus: 2-s2.0-85139944487 (3)