Determining the kinetics of sunflower hulls using dilute acid pretreatment in the production of xylose and furfural
Abstract: Pretreatment of sunflower hulls was conducted under varied dilute acid concentrations (0.5–2.0 wt%), reaction temperatures ranging between 140°C and 160°C and the reaction time up to 30 min. The conversion of xylan into xylose and furfural was investigated. The maximum xylose and furfural recoveries, 54.5±0.7 and 24.0±1.1 wt%, respectively, were obtained at different reaction times with 2.0 wt% acid concentration at 160°C. The experimental data were fitted into a two-step kinetic model based on irreversible pseudo-first-order kinetics at each step. The model was successfully validated using the F-test. Sunflower hulls showed a greater recalcitrance to acid pretreatment than other agricultural crops, such as kenaf, sorghum and sunn hemp. This feature was ascribed to the occurrence of a wax layer on the cell wall surface with a high lignin content, which may act as a barrier hindering the acid access to acetyl linkages in xylan.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Determining the kinetics of sunflower hulls using dilute acid pretreatment in the production of xylose and furfural ; volume:3 ; number:1 ; year:2014 ; pages:69-75
Green processing & synthesis ; 3, Heft 1 (2014), 69-75
- Creator
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Kamireddy, Srinivas Reddy
Kozliak, Evguenii I.
Tucker, Melvin
Ji, Yun
- DOI
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10.1515/gps-2013-0095
- URN
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urn:nbn:de:101:1-2501120300588.925970785378
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:35 AM CEST
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Associated
- Kamireddy, Srinivas Reddy
- Kozliak, Evguenii I.
- Tucker, Melvin
- Ji, Yun
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