| Yield stress of pretreated corn stover suspensions using magnetic resonance imaging. | |
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MedLine Citation:
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PMID: 21618210 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Cellulose fibers in water form networks that give rise to an apparent yield stress, especially at high solids contents. Measuring the yield stress and correlating it with fiber concentration is important for the biomass and pulp industries. Understanding how the yield stress behaves at high solids concentrations is critical to optimize enzymatic hydrolysis of biomass in the production of biofuels. Rheological studies on pretreated corn stover and various pulp fibers have shown that yield stress values correlate with fiber mass concentration through a power-law relationship. We use magnetic resonance imaging (MRI) as an in-line rheometer to measure velocity profiles during pipe flow. If coupled with pressure drop measurements, these allow yield stress values to be determined. We compare our results with literature values and discuss the accuracy and precision of the rheo-MRI measurement, along with the effects of fiber characteristics on the power-law coefficients. Biotechnol. Bioeng. © 2011 Wiley Periodicals, Inc. |
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Authors:
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David M Lavenson; Emilio J Tozzi; Michael J McCarthy; Robert L Powell |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-5-25 |
Journal Detail:
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Title: Biotechnology and bioengineering Volume: - ISSN: 1097-0290 ISO Abbreviation: - Publication Date: 2011 May |
Date Detail:
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Created Date: 2011-5-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7502021 Medline TA: Biotechnol Bioeng Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Wiley Periodicals, Inc. |
Affiliation:
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Department of Chemical and Materials Science Engineering, University of California, Davis, California 95616; telephone: +1-530-752-5364; fax: 530 752 4759. dmlavenson@ucdavis.edu. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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