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    Exploring alkaline pre-treatment of microalgal biomass for bioethanol production

    Access Status
    Fulltext not available
    Authors
    Harun, R.
    Jason, W.
    Cherrington, T.
    Danquah, Michael
    Date
    2011
    Type
    Journal Article
    
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    Citation
    Harun, R. and Jason, W. and Cherrington, T. and Danquah, M. 2011. Exploring alkaline pre-treatment of microalgal biomass for bioethanol production. Applied Energy. 88 (10): pp. 3464-3467.
    Source Title
    Applied Energy
    DOI
    10.1016/j.apenergy.2010.10.048
    ISSN
    0306-2619
    School
    Curtin Sarawak
    URI
    http://hdl.handle.net/20.500.11937/3174
    Collection
    • Curtin Research Publications
    Abstract

    We have investigated, for the first time, the alkaline pre-treatment of microalgal biomass, from the species Chlorococcum infusionum, using NaOH for bioethanol production. This pre-treatment step aims to release and breakdown entrapped polysaccharides in the microalgae cell walls into fermentable subunits. Three parameters were examined here; the concentration of NaOH, temperature and the pre-treatment time. The bioethanol concentration, glucose concentration and the cell size were studied in order to determine the effectiveness of the pre-treatment process. Microscopic analysis was performed to confirm cell rupturing, the highest glucose yield was determined to be 350. mg/g, and the maximum bioethanol yield obtained was 0.26. g ethanol/g algae using 0.75% (w/v) of NaOH and 120 °C for 30. min. Overall, the alkaline pre-treatment method proved to be promising option to pre-treat microalgal biomass for bioethanol production.

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