Overview: Comparison of pretreatment technologies and fermentation processes of bioethanol from microalgae

[Display omitted] •Bioethanol from microalgae are promising and sustainable forms of energy resources.•Recent advances pretreatment technologies for bioethanol from microalgae.•Types of ethanologenic microorganisms and fermentation processes affect bioethanol yield.•Future outlook of bioethanol from...

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Bibliographic Details
Published in:Energy conversion and management 2018-10, Vol.173, p.81-94
Main Authors: Phwan, Chai Kee, Ong, Hwai Chyuan, Chen, Wei-Hsin, Ling, Tau Chuan, Ng, Eng Poh, Show, Pau Loke
Format: Article
Language:English
Subjects:
Bioethanol
Biofuels
Commercialization
Economic and environmental vitality
Energy policy
Energy resources
Energy security
Energy sources
Ethanol
Exploitation
Fermentation
Fossil fuels
Industrial applications
Microalgae
Microorganisms
Natural resources
Pretreatment
Renewable energy
Reviews
Security
Sustainability
Technology
Viability
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Summary:[Display omitted] •Bioethanol from microalgae are promising and sustainable forms of energy resources.•Recent advances pretreatment technologies for bioethanol from microalgae.•Types of ethanologenic microorganisms and fermentation processes affect bioethanol yield.•Future outlook of bioethanol from microalgae in both economic and environment aspect. Continuous exploitation of natural resources especially in fossil fuels to fulfil the market demand has jeopardized the natural resources in the Earth. Bioethanol produced by microalgae is one of the promising biofuel for energy security and ecological sustainability. Yet, to date only a modest review has been reported on the bioethanol production technology from microalgae by using various pretreatment methods, fermentative microorganisms, fermentation processes, commercialization techniques and its environmental perspectives. This review paper aims to provide a comprehensive information by comparing the recent pretreatment technologies by using different types of ethanologenic microorganisms in various fermentation processes to maximize the bioethanol production. Studies of the economic viability and environmental perspectives of bioethanol from microalgae have been carried out to investigate its potentialities to eliminate environmental issues and towards commercialization. Therefore, this review is essential in providing ideas for the future researches in renewable energy resources technology to develop a more efficient way to scale-up the bioethanol production from microalgae for commercial and industrial application.
ISSN:0196-8904
1879-2227
DOI:10.1016/j.enconman.2018.07.054