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Exploring alkaline pre-treatment of microalgal biomass for bioethanol production


Citation

Harun, Razif and Jason, W. S. Y. and Cherrington, Tamara and Danquah, Michael K. (2011) Exploring alkaline pre-treatment of microalgal biomass for bioethanol production. Applied Energy, 88 (10). pp. 3464-3467. ISSN 0306-2619; ESSN: 1872-9118

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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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1016/j.apenergy.2010.10.048
Publisher: Elsevier
Keywords: Alkaline pre-treatment; Microalgae; Biomass; Fermentation; Bioethanol
Depositing User: Nabilah Mustapa
Date Deposited: 17 Sep 2015 07:21
Last Modified: 17 Sep 2015 07:21
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.apenergy.2010.10.048
URI: http://psasir.upm.edu.my/id/eprint/40358
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