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  • Assessment of sugarcane bagasse gasification in supercritical water for hydrogen production

    Author(s)
    Cao, Wen
    Guo, Liejin
    Yan, Xuecheng
    Zhang, Deming
    Yao, Xiangdong
    Griffith University Author(s)
    Yan, Xuecheng
    Year published
    2018
    Metadata
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    Abstract
    Sugarcane bagasse is one of the major resources of agricultural biomass waste in the world. In this work, supercritical water gasification characteristics of sugarcane bagasse were investigated. The effect of temperature (600–750 °C), concentration (3–12 wt%), residence time (5–20 min) and catalysts (Raney-Ni, K2CO3 and Na2CO3) on bagasse gasification were studied. A kinetic study on the non-catalytic and Na2CO3 catalytic bagasse gasification was conducted to describe the kinetic information of the bagasse gasification reaction. The results showed that a higher reaction temperature, a lower bagasse concentration and a longer ...
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    Sugarcane bagasse is one of the major resources of agricultural biomass waste in the world. In this work, supercritical water gasification characteristics of sugarcane bagasse were investigated. The effect of temperature (600–750 °C), concentration (3–12 wt%), residence time (5–20 min) and catalysts (Raney-Ni, K2CO3 and Na2CO3) on bagasse gasification were studied. A kinetic study on the non-catalytic and Na2CO3 catalytic bagasse gasification was conducted to describe the kinetic information of the bagasse gasification reaction. The results showed that a higher reaction temperature, a lower bagasse concentration and a longer residence time could favor the gasification of bagasse, leading to a higher hydrogen yield. Bagasse was nearly completely gasified at 750 °C without using any catalyst and the carbon gasification efficiency could reach up to 96.28%. The addition of employed catalysts remarkably promoted the bagasse gasification reactivity. The maximum hydrogen yield (35.3 mol/kg) was achieved at 650 °C with the Na2CO3 loading of 20 wt%. The experimental data fitted well with a homogeneous model based on a Pseudo-first-order reaction hypothesis. The kinetic study showed that Na2CO3 catalyst could lower the activation energy Ea of bagasse gasification from 117.88 kJ/mol to 78.25 kJ/mol.
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    Journal Title
    International Journal of Hydrogen Energy
    Volume
    43
    Issue
    30
    DOI
    https://doi.org/10.1016/j.ijhydene.2017.12.013
    Subject
    Chemical sciences
    Engineering
    Other engineering not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/381776
    Collection
    • Journal articles

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