| High titer ethanol production from simultaneous enzymatic saccharification and fermentation of aspen at high solids: A comparison between SPORL and dilute acid pretreatments. | |
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MedLine Citation:
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PMID: 21824766 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Native aspen (Populus tremuloides) was pretreated using sulfuric acid and sodium bisulfite (SPORL) and dilute sulfuric acid alone (DA). Simultaneous enzymatic saccharification and fermentation (SSF) was conducted at 18% solids using commercial enzymes with cellulase loadings ranging from 6 to 15FPU/g glucan and Saccharomyces cerevisiae Y5. Compared with DA pretreatment, the SPORL pretreatment reduced the energy required for wood chip size-reduction, and reduced mixing energy of the resultant substrate for solid liquefaction. Approximately 60% more ethanol was produced from the solid SPORL substrate (211L/ton wood at 59g/L with SSF efficiency of 76%) than from the solid DA substrate (133L/ton wood at 35g/L with SSF efficiency 47%) at a cellulase loading of 10FPU/g glucan after 120h. When the cellulase loading was increased to 15FPU/g glucan on the DA substrate, the ethanol yield still remained lower than the SPORL substrate at 10FPU/g glucan. |
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Authors:
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J Y Zhu; R Gleisner; C T Scott; X L Luo; S Tian |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-7-22 |
Journal Detail:
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Title: Bioresource technology Volume: - ISSN: 1873-2976 ISO Abbreviation: - Publication Date: 2011 Jul |
Date Detail:
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Created Date: 2011-8-9 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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Published by Elsevier Ltd. |
Affiliation:
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USDA Forest Service, Forest Products Laboratory, Madison, WI, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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