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Blogs under tag Microalgae

Microalgae oil from Dunaliella tertiolecta as a feedstock for biodiesel Posted by Natalia on Sun October 24 2010 12:05:36 PM 2

Alternative, non-food based biomass fuel feedstock development is vital for our national security, economy and the environment. Microalgae are among the most promising of these alternatives. Microalgal cell growth rates and metabolic products are affected by a combination of environmental parameters. In this work, the influences of light source, light intensity, CO2 concentration, and photoperiod on the growth of Dunaliella tertiolecta (D. tertiolecta) were studied. The effects of these environmental parameters on the lipid content and fatty acid composition of D. tertiolecta were also investigated. Red light-emitting diodes (LEDs), white LEDs, and fluorescent lights were all found to be effective for algal growth. Increasing light intensity resulted in significantly more rapid algal growth, and increasing the period of light also significantly increased biomass productivity. Similar growth rates were observed for 2%, 4%, and 6% CO2-concentrations. The different light sources and intensities were found to have no significant effect on FAME composition of D. tertiolecta. Methyl linolenate and methyl palmitate were found to be the major components of FAME produced from D. tertiolecta oil. D. tertiolecta and its derived oils should be a suitable feedstock for biofuel production.
Keywords: Microalgae; Dunaliella tertiolecta; Cultivation; Biofuel production

Microalgae to biodiesel in Chile Posted by Natalia on Tue September 21 2010 01:21:29 AM


A new project, which is financially supported by the Chilean government, will promote the diversification of energy through the production of biofuels from microalgae.

The main objective of the initiative is to develop algae production which captures carbon dioxide from the atmosphere and also creates competitively priced biodiesel fuels.

The project is being developed by Bioscan in the region of Antofagasta, with co-financing from InnovaChile which is part of the Corporation for the Promotion of Production (CORFO), which facilitated CLP 323 million (USD 647,000).

After selecting effective strains of microalgae to produce lipids and optimised growth conditions in the laboratory, the technologically innovative project is now entering its second and final stage.

Agnes Cadavid, Project Director, explains that the goal is to create a technological solution to develop a quality product in sufficient quantity so that there is interest in the liquid biofuels industry.

The application uses biotechnology to produce fuel from algae grown in photobioreactors, pools, and then transform these fuels into biodiesel, an alternative fuel to pertrol.

The initiative will have a trial period, which is stipulated to be in 24 months time.