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Biocomponent-based microalgal transformations into biofuels during the pretreatment and fermentation process

Title
Biocomponent-based microalgal transformations into biofuels during the pretreatment and fermentation process
Author
전병훈
Keywords
Microalgae; Cell wall disruption; Biochemical constituents; Fermentation; Biofuels; Energy recovery
Issue Date
2020-04
Publisher
ELSEVIER SCI LTD
Citation
BIORESOURCE TECHNOLOGY, v. 302, article no. 122809
Abstract
Microalgal cell wall integrity and composition have a significant impact on the fermentation process and biofuel recovery. In this study, various biofuels (bioethanol, higher alcohols (C3-C5), and biodiesel) were produced by the fermentation of carbohydrates and proteins, and transesterification of lipids from three different microalgal strains (Pseudochlorella sp., Chlamydomonas mexicana, and Chlamydomonas pitschmannii), each possessing different proportions of bioconstituents (carbohydrates, proteins, and lipids). Changes in the cell wall structure and thickness were observed before and after fermentation using transmission electron microscopy. Pseudochlorella sp. showed the highest yields of bioethanol (0.45 g-ethanol/g-carbohydrates), higher alcohols (0.44 g-higher alcohols/g-proteins), and biodiesel (0.55 g-biodiesel/g-lipids), which consequently revealed a maximum energy recovery (42%) from whole constituents. This study suggests that different physiological properties, including cell wall thickness and the proportion of bioconstituents in microalgae, could have a significant impact on the pretreatment and fermentation efficiencies for biofuels production.
URI
https://www.sciencedirect.com/science/article/pii/S096085242030078X?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/166127
ISSN
0960-8524; 1873-2976
DOI
10.1016/j.biortech.2020.122809
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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