Kinetic modeling of the CaO‑based sorption‑enhanced water gas shift processing of biomass gasification producer gas
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Authors
Castro, J.
Leaver, Jonathan
Pang, Shusheng
Leaver, Jonathan
Pang, Shusheng
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Grantor
Date
2025-02-10
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Type
Journal Article
Ngā Upoko Tukutuku (Māori subject headings)
Keyword
biomass gasification
hydrogen production
modelling
environmental sustainability
hydrogen production
modelling
environmental sustainability
ANZSRC Field of Research Code (2020)
Citation
Castro, J., Leaver, J., & Pang, S. (2025). Kinetic modeling of the CaO‑based sorption‑enhanced water gas shift processing of biomass gasification producer gas. Biomass Conversion and Biorefinery, 3, 1-14. https://doi.org/10.1007/s13399-025-06597-3
Abstract
The transition to sustainable energy has attracted strong interest worldwide in hydrogen production from biomass with integrated CO2 capture. The sorption-enhanced water–gas shift (SEWGS) process presents a promising approach for upgrading the biomass gasification producer gas with efficient carbon capture. In this study, a kinetic-based model for the SEWGS process using a CaO-based sorbent and biomass gasification producer gas as the feeding gas was developed in Aspen Plus. The model was validated against experimental data from the literature using pure CO feed and biomass gasification producer gas. Sensitivity analysis was conducted to assess the impacts of key operating parameters, including carbonation temperature, steam-to-carbon ratio, and sorbent quantity, on the SEWGS process. The results of this study indicate that the optimum carbonation temperature is in the range of 650–700 °C with high reaction rates and high hydrogen yield. Increasing sorbent loading improves the CO2 capture efficiency, while the optimum H2O/CO ratio was found to be 3 with high CO conversion. Under the conditions of carbonation temperature of 650 °C, CaO/(CO + CO2) ratio of 20 and H2O/CO ratio of 3, the H2 concentration of the producer gas increased from 53 to 87 vol%. However, an excessively high H2O/CO ratio negatively impacts CO2 capture efficiency and decreases the H2 concentration.
Publisher
Springer Nature
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DOI
https://doi.org/10.1007/s13399-025-06597-3
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CC BY Attribution 4.0 International