| Supercritical carbon dioxide pretreatment of corn stover and switchgrass for lignocellulosic ethanol production. | |
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MedLine Citation:
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PMID: 21555219 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Supercritical CO(2) (SC-CO(2)), a green solvent suitable for a mobile lignocellulosic biomass processor, was used to pretreat corn stover and switchgrass at various temperatures and pressures. The CO(2) pressure was released as quickly as possible by opening a quick release valve during the pretreatment. The biomass was hydrolyzed after pretreatment using cellulase combined with β-glucosidase. The hydrolysate was analyzed for the amount of glucose released. Glucose yields from corn stover samples pretreated with SC-CO(2) were higher than the untreated sample's 12% glucose yield (12g/100g dry biomass) and the highest glucose yield of 30% was achieved with SC-CO(2) pretreatment at 3500psi and 150°C for 60min. The pretreatment method showed very limited improvement (14% vs. 12%) in glucose yield for switchgrass. X-ray diffraction results indicated no change in crystallinity of the SC-CO(2) treated corn stover when compared to the untreated, while SEM images showed an increase in surface area. |
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Authors:
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Naveen Narayanaswamy; Ahmed Faik; Douglas J Goetz; Tingyue Gu |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-23 |
Journal Detail:
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Title: Bioresource technology Volume: - ISSN: 1873-2976 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-5-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
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Department of Chemical Engineering & Biomolecular Engineering, Ohio University, Athens, OH 45701, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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