| Potential of Potassium Hydroxide Pretreatment of Switchgrass for Fermentable Sugar Production. | |
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MedLine Citation:
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PMID: 23274726    Owner: NLM    Status: Publisher    |
Abstract/OtherAbstract:
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Chemical pretreatment of lignocellulosic biomass has been extensively investigated for sugar generation and subsequent fuel production. Alkaline pretreatment has emerged as one of the popular chemical pretreatment methods, but most attempts thus far have utilized NaOH for the pretreatment process. This study aimed at investigating the potential of potassium hydroxide (KOH) as a viable alternative alkaline reagent for lignocellulosic pretreatment based on its different reactivity patterns compared to NaOH. Performer switchgrass was pretreated at KOH concentrations of 0.5-2 % for varying treatment times of 6-48 h, 6-24 h, and 0.25-1 h at 21, 50, and 121 °C, respectively. The pretreatments resulted in the highest percent sugar retention of 99.26 % at 0.5 %, 21 °C, 12 h while delignification up to 55.4 % was observed with 2 % KOH, 121 °C, 1 h. Six pretreatment conditions were selected for subsequent enzymatic hydrolysis with Cellic CTec2® for sugar generation. The pretreatment condition of 0.5 % KOH, 24 h, 21 °C was determined to be the most effective as it utilized the least amount of KOH while generating 582.4 mg sugar/g raw biomass for a corresponding percent carbohydrate conversion of 91.8 %. |
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Authors:
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Rajat Sharma; Vijaykumar Palled; Ratna R Sharma-Shivappa; Jason Osborne |
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Publication Detail:
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Type:Â JOURNAL ARTICLE Â Â Â Date:Â 2012-12-29 |
Journal Detail:
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Title: Applied biochemistry and biotechnology    Volume: -    ISSN: 1559-0291    ISO Abbreviation: Appl. Biochem. Biotechnol.    Publication Date: 2012 Dec |
Date Detail:
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Created Date:Â 2012-12-31 Â Â Â Completed Date:Â - Â Â Â Revised Date:Â - Â Â Â |
Medline Journal Info:
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Nlm Unique ID: 8208561    Medline TA: Appl Biochem Biotechnol    Country: -    |
Other Details:
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Languages:Â ENG Â Â Â Pagination:Â - Â Â Â Citation Subset:Â - Â Â Â |
Affiliation:
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Department of Biological and Agricultural Engineering, North Carolina State University (NCSU), Campus Box 7625, Raleigh, NC, 27695, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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