Characterization of biochar from rice hulls and wood chips produced in a top-lit updraft biomass gasifier

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dc.contributor.author James, M.
dc.contributor.author Yuan, W.
dc.contributor.author Boyette, M. D.
dc.contributor.author Wang, Donghai H.
dc.contributor.author Kumar, A.
dc.date.accessioned 2017-03-13T18:33:37Z
dc.date.available 2017-03-13T18:33:37Z
dc.identifier.uri http://hdl.handle.net/2097/35276
dc.description Citation: James, M., Yuan, W., Boyette, M. D., Wang, D., & Kumar, A. (2016). Characterization of biochar from rice hulls and wood chips produced in a top-lit updraft biomass gasifier. Transactions of the Asabe, 59(3), 749-756. doi:10.13031/trans.59.11631
dc.description.abstract The objective of this study was to characterize biochar produced from rice hulls and wood chips in a top-lit updraft gasifier. Biochar from four airflows (8, 12, 16, or 20 L min-1) and two insulation conditions (not insulated or insulated with 88.9 mm of fiberglass on the external wall of the gasifier) were evaluated. Measurement of elemental composition, higher heating value (HHV), and BET surface area and proximate analyses of the biochar were carried out. It was found that the airflow rate and reactor insulation significantly influenced the chemical composition of the biochar depending on the biomass type. For instance, the carbon content of biochar from rice hulls decreased from 40.9% to 27.2% and the HHV decreased from 14.8 to 10.2 MJ kg-1 as the airflow increased from 8 to 20 L min-1 when the reactor was insulated. In contrast, the carbon content of biochar from wood chips increased from 82% to 86% and the HHV stayed stable at 32.0 to 33.2 MJ kg-1 at the same conditions. Despite these variations, the BET surface area of biochar from both biomass types increased with increased airflow and additional insulation. For example, rice hull biochar had a maximum BET surface area of 183 m2g-1 at 20 L min-1 airflow with insulation. The BET surface of biochar from wood chips peaked at 405 m2 gg-1 at the same conditions.
dc.relation.uri https://doi.org/10.13031/trans.59.11631
dc.rights © 2016 American Society of Agricultural and Biological Engineers. This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
dc.rights.uri http://www.sherpa.ac.uk/romeo/issn/2151-0032/
dc.subject Biochar
dc.subject Biomass
dc.subject Gasification
dc.subject Top-Lit Updraft Gasification
dc.subject Calorific Value
dc.subject Insulation
dc.title Characterization of biochar from rice hulls and wood chips produced in a top-lit updraft biomass gasifier
dc.type Article
dc.date.published 2016
dc.citation.doi 10.13031/trans.59.11631
dc.citation.epage 756
dc.citation.issn 2151-0032
dc.citation.issue 3
dc.citation.jtitle Transactions of the ASABE
dc.citation.spage 749
dc.citation.volume 59
dc.contributor.authoreid dwang
dc.contributor.kstate Wang, Donghai H.


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