{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,10]],"date-time":"2026-05-10T08:36:10Z","timestamp":1778402170628,"version":"3.51.4"},"reference-count":38,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2023,11,28]],"date-time":"2023-11-28T00:00:00Z","timestamp":1701129600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"FCT\u2014Foundation for Science and Technology","award":["2022.08625.PTDC"],"award-info":[{"award-number":["2022.08625.PTDC"]}]},{"name":"FCT\u2014Foundation for Science and Technology","award":["DOI: 10.54499\/2022.08625.PTDC"],"award-info":[{"award-number":["DOI: 10.54499\/2022.08625.PTDC"]}]},{"name":"FCT\u2014Foundation for Science and Technology","award":["2021.03036.CEECIND\/CP1680\/CT0003"],"award-info":[{"award-number":["2021.03036.CEECIND\/CP1680\/CT0003"]}]},{"name":"COMPETE 2020 FEDER funds","award":["2022.08625.PTDC"],"award-info":[{"award-number":["2022.08625.PTDC"]}]},{"name":"COMPETE 2020 FEDER funds","award":["DOI: 10.54499\/2022.08625.PTDC"],"award-info":[{"award-number":["DOI: 10.54499\/2022.08625.PTDC"]}]},{"name":"COMPETE 2020 FEDER funds","award":["2021.03036.CEECIND\/CP1680\/CT0003"],"award-info":[{"award-number":["2021.03036.CEECIND\/CP1680\/CT0003"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Energies"],"abstract":"<jats:p>Hydrogen produced sustainably has the potential to be an important energy source in the short term. Biomass gasification is one of the fastest-growing technologies to produce green hydrogen. In this work, an air-blown gasification model was developed in Aspen Plus\u00ae, integrating a water\u2013gas shift (WGS) reactor to study green hydrogen production. A sensitivity analysis was performed based on two approaches with the objective of optimizing the WGS reaction. The gasifier is optimized for carbon monoxide production (Case A) or hydrogen production (Case B). A CO2 recycling stream is approached as another intensification process. Results suggested that the Case B approach is more favorable for green hydrogen production, allowing for a 52.5% molar fraction. The introduction of CO2 as an additional gasifying agent showed a negative effect on the H2 molar fraction. A general conclusion can be drawn that the combination of a WGS reactor with an air-blown biomass gasification process allows for attaining 52.5% hydrogen content in syngas with lower steam flow rates than a pure steam gasification process. These results are relevant for the hydrogen economy because they represent reference data for further studies towards the implementation of biomass gasification projects for green hydrogen production.<\/jats:p>","DOI":"10.3390\/en16237829","type":"journal-article","created":{"date-parts":[[2023,11,28]],"date-time":"2023-11-28T11:43:16Z","timestamp":1701171796000},"page":"7829","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Air-Blown Biomass Gasification Process Intensification for Green Hydrogen Production: Modeling and Simulation in Aspen Plus"],"prefix":"10.3390","volume":"16","author":[{"given":"Bernardino","family":"Novais","sequence":"first","affiliation":[{"name":"Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2185-1341","authenticated-orcid":false,"given":"Ana","family":"Ramos","sequence":"additional","affiliation":[{"name":"LAETA-INEGI, Associated Laboratory for Energy, Transports and Aeronautics, Institute of Science and Innovation in Mechanical and Industrial Engineering, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2652-8789","authenticated-orcid":false,"given":"Abel","family":"Rouboa","sequence":"additional","affiliation":[{"name":"Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"},{"name":"LAETA-INEGI, Associated Laboratory for Energy, Transports and Aeronautics, Institute of Science and Innovation in Mechanical and Industrial Engineering, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]},{"given":"Eliseu","family":"Monteiro","sequence":"additional","affiliation":[{"name":"Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"},{"name":"LAETA-INEGI, Associated Laboratory for Energy, Transports and Aeronautics, Institute of Science and Innovation in Mechanical and Industrial Engineering, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,11,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Monteiro, E., and Ferreira, S. (2023). Some Perspectives for the Gasification Process in the Energy Transition World Scenario. Energies, 16.","DOI":"10.3390\/en16145543"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"188","DOI":"10.1016\/j.rser.2019.04.048","article-title":"Numerical approaches and comprehensive models for gasification process: A review","volume":"110","author":"Ramos","year":"2019","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1309","DOI":"10.1016\/j.renene.2019.07.051","article-title":"Numerical investigation of optimum operating conditions for syngas and hydrogen production from biomass gasification using Aspen Plus","volume":"146","author":"Tavares","year":"2020","journal-title":"Renew. Energy"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Gonz\u00e1lez-V\u00e1zquez, M.P., Rubiera, F., Pevida, C., Pio, D.T., and Tarelho, L.A.C. (2021). Thermodynamic Analysis of Biomass Gasification Using Aspen Plus: Comparison of Stoichiometric and Non-Stoichiometric Models. Energies, 14.","DOI":"10.3390\/en14010189"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"135476","DOI":"10.1016\/j.jclepro.2022.135476","article-title":"On the green hydrogen production through gasification processes: A techno-economic approach","volume":"383","author":"Martins","year":"2023","journal-title":"J. Clean. Prod."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Ren, R., Wang, H., and You, C. (2022). Steam Gasification of Refuse-Derived Fuel with CaO Modification for Hydrogen-Rich Syngas Production. Energies, 15.","DOI":"10.3390\/en15218279"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"418","DOI":"10.1016\/j.egyr.2023.05.262","article-title":"Numerical analysis of plasma gasification of hazardous waste using Aspen Plus","volume":"9","author":"Pitrez","year":"2023","journal-title":"Energy Rep."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"122854","DOI":"10.1016\/j.energy.2021.122854","article-title":"Thermodynamic analysis and parametric optimization of steam-CO2 based biomass gasification system using Aspen Plus","volume":"241","author":"Vikram","year":"2022","journal-title":"Energy"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1081","DOI":"10.1016\/j.ijhydene.2017.11.017","article-title":"Investigation of a novel & integrated simulation model for hydrogen production from lignocellulosic biomass","volume":"43","author":"Ersoz","year":"2018","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"484","DOI":"10.1016\/j.renene.2016.08.069","article-title":"Steam gasification of biomass with subsequent syngas adjustment using shift reaction for syngas production: An Aspen Plus model","volume":"101","author":"Pala","year":"2017","journal-title":"Renew. Energy"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"4092","DOI":"10.1016\/j.ijhydene.2015.01.170","article-title":"Investigation of hydrogen production from model bio-syngas with high CO2 content by water-gas shift reaction","volume":"40","author":"Chu","year":"2015","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1221","DOI":"10.1016\/j.rser.2017.03.140","article-title":"Biomass resources in Portugal: Current status and prospects","volume":"78","author":"Ferreira","year":"2017","journal-title":"Renew. Sust. Energy Rev."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"5766","DOI":"10.1021\/ef500570t","article-title":"Analysis of syngas quality from Portuguese biomasses: An experimental and numerical study","volume":"28","author":"Silva","year":"2014","journal-title":"Energy Fuels"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1674","DOI":"10.1002\/ceat.202000068","article-title":"Challenges and Opportunities of Modeling Biomass Gasification in Aspen Plus: A Review","volume":"43","author":"Mutlu","year":"2020","journal-title":"Chem. Eng. Technol."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"De, S., Agarwal, A.K., Moholkar, V.S., and Thallada, B. (2018). Coal and Biomass Gasification: Recent Advances and Future Challenges, Springer Nature.","DOI":"10.1007\/978-981-10-7335-9"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"2841","DOI":"10.1016\/j.rser.2010.07.030","article-title":"Review and analysis of biomass gasification models","volume":"14","author":"Bruno","year":"2010","journal-title":"Renew. Sust. Energy Rev."},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Basu, P. (2018). Biomass Gasification, Pyrolysis, and Torrefaction: Practical Design and Theory, Academic Press, Elsevier. [3rd ed.].","DOI":"10.1016\/B978-0-12-812992-0.00007-8"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"71","DOI":"10.1016\/j.rser.2017.02.027","article-title":"Modelling approaches to biomass gasification: A review with emphasis on the stoichiometric method","volume":"74","author":"Costa","year":"2017","journal-title":"Renew. Sust. Energ. Rev."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1016\/S0960-8524(01)00120-1","article-title":"Energy production from biomass (part 3): Gasification technologies","volume":"83","author":"McKendry","year":"2002","journal-title":"Bioresour. Technol."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Al Malah, K.I.M. (2017). Aspen Plus: Chemical Engineering Applications, John Wiley & Sons.","DOI":"10.1002\/9781119293644"},{"key":"ref_21","unstructured":"Aspen Technology Inc. (2000). Aspen Plus User Guide, Aspen Technology Inc.. Version 10.2."},{"key":"ref_22","unstructured":"Towler, G.P., and Sinnott, R.K. (2013). ; Chemical Engineering Design: Principles, Practice, and Economics of Plant and Process Design, Butterworth-Heinemann. [2nd ed.]."},{"key":"ref_23","unstructured":"Aspen Technology Inc. (2013). Getting Started Modeling Processes with Solids, Aspen Technology, Inc.. Version 8.4."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"624","DOI":"10.1016\/j.energy.2014.05.010","article-title":"Thermochemical equilibrium modeling of a biomass downdraft gasifier: Constrained and unconstrained non-stoichiometric models","volume":"71","author":"Mendiburu","year":"2014","journal-title":"Energy"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"116216","DOI":"10.1016\/j.enconman.2022.116216","article-title":"Air-CO2 and oxygen-enriched air-CO2 biomass gasification in an autothermal downdraft gasifier: Experimental studies","volume":"270","author":"Pandey","year":"2022","journal-title":"Energy Convers. Manag."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"116843","DOI":"10.1016\/j.envpol.2021.116843","article-title":"Recent progress on CO-rich syngas production via CO2 gasification of various wastes: A critical review on efficiency, challenges and outlook","volume":"278","author":"Chan","year":"2021","journal-title":"Environ. Pollut."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"459","DOI":"10.1016\/S0961-9534(03)00037-0","article-title":"Computer simulation of a downdraft wood gasifier for tea drying","volume":"25","author":"Jayah","year":"2003","journal-title":"Biomass Bioenergy"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"1660","DOI":"10.1016\/j.energy.2007.01.010","article-title":"Thermodynamic equilibrium model and second law analysis of a downdraft waste gasifier","volume":"32","author":"Jarungthammachote","year":"2007","journal-title":"Energy"},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Ferreira, S., Monteiro, E., Brito, P., and Vilarinho, C. (2019). A Holistic Review on Biomass Gasification Modified Equilibrium Models. Energies, 12.","DOI":"10.3390\/en12010160"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"1069","DOI":"10.1016\/j.energy.2019.06.070","article-title":"An Eulerian model for forest residues gasification in a plasma gasifier","volume":"182","author":"Ismail","year":"2019","journal-title":"Energy"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"631","DOI":"10.1016\/j.fuel.2014.03.034","article-title":"Modelling super-equilibrium in biomass gasification with the constrained Gibbs energy method","volume":"129","author":"Kangas","year":"2014","journal-title":"Fuel"},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Ferreira, S., Monteiro, E., Calado, L., Silva, V., Brito, P., and Vilarinho, C. (2019). Experimental and modeling analysis of brewers\u2019 spent grains gasification in a downdraft reactor. Energies, 12.","DOI":"10.3390\/en12234413"},{"key":"ref_33","doi-asserted-by":"crossref","unstructured":"Ferreira, S., Monteiro, E., Brito, P., and Vilarinho, C. (2019). Experimental Analysis of Brewers\u2019 Spent Grains Steam Gasification in an Allothermal Batch Reactor. Energies, 12.","DOI":"10.3390\/en12050912"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"1333","DOI":"10.1016\/j.rser.2015.09.030","article-title":"Assessing the gasification performance of biomass: A review on biomass gasification process conditions, optimization and economic evaluation","volume":"53","author":"Ahmad","year":"2016","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"21087","DOI":"10.1016\/j.ijhydene.2020.05.160","article-title":"Clean syngas from small commercial biomass gasifiers; a review of gasifier development, recent advances and performance evaluation","volume":"45","author":"Thomson","year":"2020","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"3097","DOI":"10.1021\/ef801076r","article-title":"Hydrogen Production through the Water\u2212Gas Shift Reaction: Thermodynamic Equilibrium versus Experimental Results over Supported Ni Catalysts","volume":"23","author":"Haryanto","year":"2009","journal-title":"Energy Fuels"},{"key":"ref_37","unstructured":"Subramani, V., Basile, A., and Veziro\u011flu, T.N. (2015). Compendium of Hydrogen Energy, Woodhead Publishing."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"248","DOI":"10.1016\/j.renene.2017.03.028","article-title":"An experimental and numerical study on the Miscanthus gasification by using a pilot scale gasifier","volume":"109","author":"Couto","year":"2017","journal-title":"Renew. Energy"}],"container-title":["Energies"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1073\/16\/23\/7829\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T21:32:42Z","timestamp":1760131962000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1073\/16\/23\/7829"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,11,28]]},"references-count":38,"journal-issue":{"issue":"23","published-online":{"date-parts":[[2023,12]]}},"alternative-id":["en16237829"],"URL":"https:\/\/doi.org\/10.3390\/en16237829","relation":{},"ISSN":["1996-1073"],"issn-type":[{"value":"1996-1073","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,11,28]]}}}