eprintid: 1385 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/13/85 datestamp: 2023-11-09 15:49:32 lastmod: 2023-11-09 15:49:32 status_changed: 2023-11-09 15:39:37 type: article metadata_visibility: show creators_name: Inayat, A. creators_name: Ahmad, M.M. creators_name: Yusup, S. creators_name: Mutalib, M.I.A. title: Biomass steam gasification with in-situ CO2 capture for enriched hydrogen gas production: A reaction kinetics modelling approach ispublished: pub keywords: Biomass; Carbon dioxide; Fuels; Gasification; Hydrogen; Kinetics; Reaction kinetics; Reforming reactions; Sorbents; Sorption; Steam; Sustainable development; Water gas shift, Carbonation reactions; Environmental issues; Hydrogen production process; Increasing temperatures; Kinetics modelling; Modelling framework; Steam gasification; Thermo chemical process, Hydrogen production note: cited By 84 abstract: Due to energy and environmental issues, hydrogen has become a more attractive clean fuel. Furthermore, there is high interest in producing hydrogen from biomass with a view to sustainability. The thermochemical process for hydrogen production, i.e. gasification, is the focus of this work. This paper discusses the mathematical modeling of hydrogen production process via biomass steam gasification with calcium oxide as sorbent in a gasifier. A modelling framework consisting of kinetics models for char gasification, methanation, Boudouard, methane reforming, water gas shift and carbonation reactions to represent the gasification and CO2 adsorption in the gasifier, is developed and implemented in MATLAB. The scope of the work includes an investigation of the influence of the temperature, steam/biomass ratio and sorbent/biomass ratio on the amount of hydrogen produced, product gas compositions and carbon conversion. The importance of different reactions involved in the process is also discussed. It is observed that hydrogen production and carbon conversion increase with increasing temperature and steam/biomass ratio. The model predicts a maximum hydrogen mole fraction in the product gas of 0.81 occurring at 950 K, steam/biomass ratio of 3.0 and sorbent/biomass ratio of 1.0. In addition, at sorbent/biomass ratio of 1.52, purity of H2 can be increased to 0.98 mole fraction with all CO2 present in the system adsorbed. © 2010 by the authors; licensee MDPI, Basel, Switzerland. date: 2010 publisher: MDPI AG official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957279770&doi=10.3390%2fen3081472&partnerID=40&md5=37d1465f6abe7bfb6b515c023e3de632 id_number: 10.3390/en3081472 full_text_status: none publication: Energies volume: 3 number: 8 pagerange: 1472-1484 refereed: TRUE issn: 19961073 citation: Inayat, A. and Ahmad, M.M. and Yusup, S. and Mutalib, M.I.A. (2010) Biomass steam gasification with in-situ CO2 capture for enriched hydrogen gas production: A reaction kinetics modelling approach. Energies, 3 (8). pp. 1472-1484. ISSN 19961073