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Particulate size of microalgal biomass affects hydrolysate properties and bioethanol concentration


Citation

Harun, Mohd Razif and Danquah, Michael Kobina and Thiruvenkadam, Selvakumar (2014) Particulate size of microalgal biomass affects hydrolysate properties and bioethanol concentration. BioMed Research International, 2014. art. no. 435631. pp. 1-8. ISSN 2314-6133; ESSN: 2314-6141

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 μm ≤ ≤ 90 μm, 125 μm ≤ ≤ 180 μm, and 295 μm ≤ ≤ 425 μm, 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 μm ≤ ≤ 90 μm) was the highest, 134.73 mg glucose/g algae, while the yield from biomass in the larger particle size range (295 μm ≤ ≤ 425 μm) 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.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1155/2014/435631
Publisher: Hindawi Publishing Corporation
Keywords: Microalgal biomass; Microalgae; Hydrolysate properties; Bioethanol concentration
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 23 Dec 2015 03:46
Last Modified: 23 Dec 2015 03:46
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1155/2014/435631
URI: http://psasir.upm.edu.my/id/eprint/34832
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