Steam gasification of rice husk: Effects of feedstock heterogeneity and heat-mass transfer

Nguyen Hong Nam, Van De Steene Laurent. 2019. Steam gasification of rice husk: Effects of feedstock heterogeneity and heat-mass transfer. Energy Sources. Part A, Recovery, Utilization, and Environmental Effects, 16 p.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Q3, Sujet : ENGINEERING, CHEMICAL / Quartile : Q4, Sujet : ENERGY & FUELS

Abstract : The effects of important practical parameters, specifically feedstock heterogeneity and heat-mass transfer on steam gasification of rice husk were investigated and quantified. Through proximate and ultimate analysis of ten rice husk types, the heterogeneity was expressed not only between different types but also within the same rice husk type. TGA-DTG curves showed notable differences in the thermal behaviors of rice husk during pyrolysis. The time required to gasify the same quantity of rice husk can vary in a ratio of 1–1.5 depending on the type. The Si content in rice husk showed an inhibitory effect to the char reactivity during steam gasification. An empirical factor of 1.3 could be applied to the conversion rate of rice husk for every 1-cm increase in the bed thickness. Results of this study could contribute to the improvement of existing systems or the design of new efficient rice husk gasifiers.

Mots-clés Agrovoc : Gazéification, riz, Déchet agricole, Utilisation des déchets

Mots-clés libres : Gasification, Rice husk, Thermogravimetric analysis, Kinetic

Classification Agris : P06 - Renewable energy resources
Q70 - Processing of agricultural wastes

Champ stratégique Cirad : CTS 7 (2019-) - Hors champs stratégiques

Auteurs et affiliations

  • Nguyen Hong Nam, HUST (VNM) - auteur correspondant
  • Van De Steene Laurent, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0000-0003-4737-3667

Source : Cirad-Agritrop (

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