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• Tran, K
• Giselrød, H
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Int. J. Mol. Sci. 2008, 9(7), 1188-1195; doi:10.3390/ijms9071188

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Towards Sustainable Production of Biofuels from Microalgae

Vishwanath Patil ^1,* , Khanh-Quang Tran ²  and Hans Ragnar Giselrød ¹

¹ Department of Plant and Environmental Sciences, The Norwegian University of Life Sciences, P.O. Box 5003, N-1432 Ås, Norway ² Department of Mathematical Sciences and Technology, The Norwegian University of Life Sciences, P.O. Box 5003, N-1432 Ås, Norway

* Author to whom correspondence should be addressed.

Received: 20 March 2008; in revised form: 12 May 2008 / Accepted: 10 June 2008 / Published: 9 July 2008

(This article belongs to the Special Issue Biofuels R&D: Securing the Planet's Future Energy Needs)

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Abstract: Renewable and carbon neutral biofuels are necessary for environmental and economic sustainability. The viability of the first generation biofuels production is however questionable because of the conflict with food supply. Microalgal biofuels are a viable alternative. The oil productivity of many microalgae exceeds the best producing oil crops. This paper aims to analyze and promote integration approaches for sustainable microalgal biofuel production to meet the energy and environmental needs of the society. The emphasis is on hydrothermal liquefaction technology for direct conversion of algal biomass to liquid fuel.

Keywords: Biomass; Biofuel; Biodiesel; Hydrothermal liquefaction; microalgae; Pyrolysis; Sustainable energy

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