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dc.contributor.authorJames Rivas, Arthur
dc.contributor.authorYuan, Wenqiao
dc.contributor.authorBoyette, Michael D.
dc.contributor.authorWang, Donghai
dc.contributor.authorKumar, Ajay
dc.date.accessioned2020-03-03T13:42:18Z
dc.date.accessioned2020-03-03T13:42:18Z
dc.date.available2020-03-03T13:42:18Z
dc.date.available2020-03-03T13:42:18Z
dc.date.issued2016-01-01
dc.date.issued2016-01-01
dc.identifierhttps://elibrary.asabe.org/abstract.asp?aid=46725
dc.identifier.other10.13031/trans.59.11631
dc.identifier.urihttps://ridda2.utp.ac.pa/handle/123456789/9575
dc.identifier.urihttps://ridda2.utp.ac.pa/handle/123456789/9575
dc.descriptionThe 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 m2 g-1 at 20 L min-1 airflow with insulation. The BET surface of biochar from wood chips peaked at 405 m2 g-1 at the same conditions.en_US
dc.description.abstractThe 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 m2 g-1 at 20 L min-1 airflow with insulation. The BET surface of biochar from wood chips peaked at 405 m2 g-1 at the same conditions.en_US
dc.formatapplication/pdf
dc.languageeng
dc.language.isoengen_US
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subjectBiocharen_US
dc.subjectBiomassen_US
dc.subjectGasificationen_US
dc.subjecttop-lit updraft gasification.en_US
dc.subjectBiochar
dc.subjectBiomass
dc.subjectGasification
dc.subjecttop-lit updraft gasification.
dc.titleCharacterization of Biochar from Rice Hulls and Wood Chips Produced in a Top-Lit Updraft Biomass Gasifieren_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
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