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    Particulate size of microalgal biomass affects hydrolysate properties and bioethanol concentration

    Access Status
    Open access via publisher
    Authors
    Harun, R.
    Danquah, Michael
    Thiruvenkadam, S.
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Harun, R. and Danquah, M. and Thiruvenkadam, S. 2014. Particulate size of microalgal biomass affects hydrolysate properties and bioethanol concentration. BioMed Research International. 2014: Harun, R. and Danquah, M. and Thiruvenkadam, S. 2014. Particulate size of microalgal biomass affects hydrolysate properties and bioethanol concentration. BioMed Research International. 2014: 435631.
    Source Title
    BioMed Research International
    DOI
    10.1155/2014/435631
    ISSN
    2314-6133
    School
    Curtin Sarawak
    URI
    http://hdl.handle.net/20.500.11937/30606
    Collection
    • Curtin Research Publications
    Abstract

    Effective optimization of microalgae-to-bioethanol process systems hinges on an in-depth characterization of key process parameters relevant to the overall bioprocess engineering. One of the such important variables is the biomass particle size distribution and the effects on saccharification levels and bioethanol titres. This study examined the effects of three different microalgal biomass particle size ranges, 35 m = x = 90 m, 125 m = x = 180 m, and 295 m = x = 425 m, on the degree of enzymatic hydrolysis and bioethanol production. Two scenarios were investigated: single enzyme hydrolysis (cellulase) and double enzyme hydrolysis (cellulase and cellobiase). The glucose yield from biomass in the smallest particle size range (35 m = x = 90 m) was the highest, 134.73 mg glucose/g algae, while the yield from biomass in the larger particle size range (295 m = x = 425 m) was 75.45 mg glucose/g algae. A similar trend was observed for bioethanol yield, with the highest yield of 0.47 g EtOH/g glucose obtained from biomass in the smallest particle size range. The results have shown that the microalgal biomass particle size has a significant effect on enzymatic hydrolysis and bioethanol yield. © 2014 Razif Harun et al.

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