Microalgae as a Source of Bioenergy: Products, Processes and Economics

Book Series: Recent Advances in Renewable Energy

Volume 1


José Carlos Magalhães Pires

DOI: 10.2174/97816810852271170101
eISBN: 978-1-68108-522-7, 2017
ISBN: 978-1-68108-523-4
ISSN: 2543-2389 (Print)
ISSN: 2543-2397 (Online)

Microalgae could play an important role in the achievement of sustainability goals related to the generation of renewable energy and g...[view complete introduction]
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Maximising Value: The Bio-Refinery Concept

- Pp. 315-331 (17)

Darren L. Oatley-Radcliffe, Thea Ekins-Coward and Robert W. Lovitt


The lipids accumulated inside microalgal biomass can be trans-esterified into biodiesel and have brought this type of feedstock to the forefront of the second generation renewable fuels research. Nevertheless, even though energy prices are generally increasing, fuel and energy products are of high volume with low value commodities and the production of microalgae-derived biofuels is not currently economically feasible when compared to fossil fuel energy. Thus, to achieve true sustainability in transferring microalgae into fuels, there is a need for integrated solutions which utilise low-value inputs to the process and exploit the full product portfolio achievable from microalgae. For example, microalgae have been shown to contain quantities of a vast array of biological materials such as exopolysaccharides, phycobiliproteins, potent antioxidants, polyunsaturated fatty acids, and mycosporinelike amino acids that have a range of high-value commercial applications in the cosmetic, pharmaceutical and nutraceutical industries. As a result, several research groups have introduced the microalgae bio-refinery approach to encapsulate this concept and maximise the full potential of an integrated microalgal production facility that harvests the high value components available and produces fuels as a secondary revenue stream.

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