Kinetic and structural changes during gasification of cashew nut shell char particles
Cashew Nut Shell (CNS), an abundant waste from the cashew nut production, could become a promising material for gasification. Nevertheless, engineering data regarding this technology is still small and fragmented. In this study, the evolution of the char textural properties during gasification, as well as the effect of operating conditions on char gasification kinetics were extensively investigated and quantified. The textural properties of cashew nut shell char changed significantly following different pathways between CO2 and H2O gasification. Micropores and mesopores were well developed along with the conversion in the case of H2O gasification instead of only micropores in the case of CO2 gasification. Regarding char gasification kinetics, an increase of the temperature from 800 to 1000°C enhanced five times the conversion rate under an H2O atmosphere and 15 times under a CO2 atmosphere. The conversion rate increased two times when the concentration of reacting gases changed from 20 to 60 vol % for both atmospheres. Similarities in terms of gasification kinetics between CNS chars and wood chip chars were found in this range of operating conditions.
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Language: | eng |
Subjects: | gazéification, gazéification du bois, noix de cajou, utilisation des déchets, propriété physicochimique, pyrolyse, déchet agricole, http://aims.fao.org/aos/agrovoc/c_34000, http://aims.fao.org/aos/agrovoc/c_ac469341, http://aims.fao.org/aos/agrovoc/c_9647, http://aims.fao.org/aos/agrovoc/c_16202, http://aims.fao.org/aos/agrovoc/c_1521, http://aims.fao.org/aos/agrovoc/c_26874, http://aims.fao.org/aos/agrovoc/c_8683, |
Online Access: | http://agritrop.cirad.fr/600112/ http://agritrop.cirad.fr/600112/1/Nam%20CNS%202021.pdf |
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dig-cirad-fr-6001122024-01-29T05:45:23Z http://agritrop.cirad.fr/600112/ http://agritrop.cirad.fr/600112/ Kinetic and structural changes during gasification of cashew nut shell char particles. Nguyen Hong Nam, Khuong Duy Anh, Vu Thi Thu Ha, Mai Thi Nga, Tsubota Toshiki, Tran Van Bay, Blin Joël, Van De Steene Laurent. 2021. Environmental Progress and Sustainable Energy, 40 (2):e13580, 12 p.https://doi.org/10.1002/ep.13580 <https://doi.org/10.1002/ep.13580> Kinetic and structural changes during gasification of cashew nut shell char particles Nguyen, Hong Nam Khuong, Duy Anh Vu, Thi Thu Ha Mai, Thi Nga Tsubota, Toshiki Tran, Van Bay Blin, Joël Van De Steene, Laurent eng 2021 Environmental Progress and Sustainable Energy gazéification gazéification du bois noix de cajou utilisation des déchets propriété physicochimique pyrolyse déchet agricole http://aims.fao.org/aos/agrovoc/c_34000 http://aims.fao.org/aos/agrovoc/c_ac469341 http://aims.fao.org/aos/agrovoc/c_9647 http://aims.fao.org/aos/agrovoc/c_16202 http://aims.fao.org/aos/agrovoc/c_1521 http://aims.fao.org/aos/agrovoc/c_26874 http://aims.fao.org/aos/agrovoc/c_8683 Cashew Nut Shell (CNS), an abundant waste from the cashew nut production, could become a promising material for gasification. Nevertheless, engineering data regarding this technology is still small and fragmented. In this study, the evolution of the char textural properties during gasification, as well as the effect of operating conditions on char gasification kinetics were extensively investigated and quantified. The textural properties of cashew nut shell char changed significantly following different pathways between CO2 and H2O gasification. Micropores and mesopores were well developed along with the conversion in the case of H2O gasification instead of only micropores in the case of CO2 gasification. Regarding char gasification kinetics, an increase of the temperature from 800 to 1000°C enhanced five times the conversion rate under an H2O atmosphere and 15 times under a CO2 atmosphere. The conversion rate increased two times when the concentration of reacting gases changed from 20 to 60 vol % for both atmospheres. Similarities in terms of gasification kinetics between CNS chars and wood chip chars were found in this range of operating conditions. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/600112/1/Nam%20CNS%202021.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1002/ep.13580 10.1002/ep.13580 info:eu-repo/semantics/altIdentifier/doi/10.1002/ep.13580 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1002/ep.13580 |
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gazéification gazéification du bois noix de cajou utilisation des déchets propriété physicochimique pyrolyse déchet agricole http://aims.fao.org/aos/agrovoc/c_34000 http://aims.fao.org/aos/agrovoc/c_ac469341 http://aims.fao.org/aos/agrovoc/c_9647 http://aims.fao.org/aos/agrovoc/c_16202 http://aims.fao.org/aos/agrovoc/c_1521 http://aims.fao.org/aos/agrovoc/c_26874 http://aims.fao.org/aos/agrovoc/c_8683 gazéification gazéification du bois noix de cajou utilisation des déchets propriété physicochimique pyrolyse déchet agricole http://aims.fao.org/aos/agrovoc/c_34000 http://aims.fao.org/aos/agrovoc/c_ac469341 http://aims.fao.org/aos/agrovoc/c_9647 http://aims.fao.org/aos/agrovoc/c_16202 http://aims.fao.org/aos/agrovoc/c_1521 http://aims.fao.org/aos/agrovoc/c_26874 http://aims.fao.org/aos/agrovoc/c_8683 |
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gazéification gazéification du bois noix de cajou utilisation des déchets propriété physicochimique pyrolyse déchet agricole http://aims.fao.org/aos/agrovoc/c_34000 http://aims.fao.org/aos/agrovoc/c_ac469341 http://aims.fao.org/aos/agrovoc/c_9647 http://aims.fao.org/aos/agrovoc/c_16202 http://aims.fao.org/aos/agrovoc/c_1521 http://aims.fao.org/aos/agrovoc/c_26874 http://aims.fao.org/aos/agrovoc/c_8683 gazéification gazéification du bois noix de cajou utilisation des déchets propriété physicochimique pyrolyse déchet agricole http://aims.fao.org/aos/agrovoc/c_34000 http://aims.fao.org/aos/agrovoc/c_ac469341 http://aims.fao.org/aos/agrovoc/c_9647 http://aims.fao.org/aos/agrovoc/c_16202 http://aims.fao.org/aos/agrovoc/c_1521 http://aims.fao.org/aos/agrovoc/c_26874 http://aims.fao.org/aos/agrovoc/c_8683 Nguyen, Hong Nam Khuong, Duy Anh Vu, Thi Thu Ha Mai, Thi Nga Tsubota, Toshiki Tran, Van Bay Blin, Joël Van De Steene, Laurent Kinetic and structural changes during gasification of cashew nut shell char particles |
description |
Cashew Nut Shell (CNS), an abundant waste from the cashew nut production, could become a promising material for gasification. Nevertheless, engineering data regarding this technology is still small and fragmented. In this study, the evolution of the char textural properties during gasification, as well as the effect of operating conditions on char gasification kinetics were extensively investigated and quantified. The textural properties of cashew nut shell char changed significantly following different pathways between CO2 and H2O gasification. Micropores and mesopores were well developed along with the conversion in the case of H2O gasification instead of only micropores in the case of CO2 gasification. Regarding char gasification kinetics, an increase of the temperature from 800 to 1000°C enhanced five times the conversion rate under an H2O atmosphere and 15 times under a CO2 atmosphere. The conversion rate increased two times when the concentration of reacting gases changed from 20 to 60 vol % for both atmospheres. Similarities in terms of gasification kinetics between CNS chars and wood chip chars were found in this range of operating conditions. |
format |
article |
topic_facet |
gazéification gazéification du bois noix de cajou utilisation des déchets propriété physicochimique pyrolyse déchet agricole http://aims.fao.org/aos/agrovoc/c_34000 http://aims.fao.org/aos/agrovoc/c_ac469341 http://aims.fao.org/aos/agrovoc/c_9647 http://aims.fao.org/aos/agrovoc/c_16202 http://aims.fao.org/aos/agrovoc/c_1521 http://aims.fao.org/aos/agrovoc/c_26874 http://aims.fao.org/aos/agrovoc/c_8683 |
author |
Nguyen, Hong Nam Khuong, Duy Anh Vu, Thi Thu Ha Mai, Thi Nga Tsubota, Toshiki Tran, Van Bay Blin, Joël Van De Steene, Laurent |
author_facet |
Nguyen, Hong Nam Khuong, Duy Anh Vu, Thi Thu Ha Mai, Thi Nga Tsubota, Toshiki Tran, Van Bay Blin, Joël Van De Steene, Laurent |
author_sort |
Nguyen, Hong Nam |
title |
Kinetic and structural changes during gasification of cashew nut shell char particles |
title_short |
Kinetic and structural changes during gasification of cashew nut shell char particles |
title_full |
Kinetic and structural changes during gasification of cashew nut shell char particles |
title_fullStr |
Kinetic and structural changes during gasification of cashew nut shell char particles |
title_full_unstemmed |
Kinetic and structural changes during gasification of cashew nut shell char particles |
title_sort |
kinetic and structural changes during gasification of cashew nut shell char particles |
url |
http://agritrop.cirad.fr/600112/ http://agritrop.cirad.fr/600112/1/Nam%20CNS%202021.pdf |
work_keys_str_mv |
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