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By Samuel R. Avro on Feb 25, 2009 with no responses

Exponential-Algae: Biofuel Breakthrough Has a Strong Chance to Make Oil Obsolete

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A Redmond, Washington-based bioscience company unveiled today, a scientific breakthrough that dramatically increases algae yields in a cost-efficient and scalable model.

Algae, shown to have the potential for solving the reliance on fossil fuels for energy production, are widely recognized as an important source for biodiesel production.

The company, Bionavitas Inc., plans on harnessing the power of the sun or an artificial light source by immersing it in the culture, with its patent-pending Light Immersion Technology effectively producing an order of magnitude more algae biomass than existing growth methods, thereby increasing yields and reducing the cost to make algae-based biofuels price competitive with petroleum products.

Algae are the ultimate feedstock for biofuel production, promising yields that are hundreds of times greater than those of traditional land-based oil crops such as soy beans or rapeseed (canola oil). The dramatic yields depend upon the efficient use of solar energy not possible using previously existing technologies.

Land-based crops can also have a negative effect on the environment, according to a Stanford University researcher.

“If we run our cars on biofuels produced in the tropics, chances will be good that we are effectively burning rainforests in our gas tanks,” warned Holly Gibbs of Stanford’s Woods Institute for the Environment.

Gibbs studied 20 years worth of satellite photographs taken of the tropical regions, and found that 50 percent of new land for growing crops came from intact rainforestes with another 30 percent coming from disturbed rainforests.

Before Bionavitas made its Light Immersion Technology available to the public, nearly every large scale approach to algae growth has been challenged by a simple fact of nature: as algae grow, they become so dense they block the light needed for continued growth.

This “self-shading” phenomenon results in a layer that limits the amount of algae per acre that can be grown and harvested. The Light Immersion Technology developed by Bionavitas fundamentally changes this equation by enabling the algae growth layer in open ponds to be up to a meter deep. This represents a 10 to 12 time increase in yield over previous methods that produced only 3-5 centimeters of growth.

“With the recent successful test flights by Continental Airlines and Japan Airlines using biofuels made partially with algae, we’re seeing a broader recognition and acceptance of the huge commercial potential for algae,” said Michael Weaver, co-founder and CEO of Bionavitas. “Our Light Immersion Technology gives algae a legitimate shot at becoming a cost-effective and sustainable biofuel feedstock because we have cracked the code of the previous problem related to self-shading in algae growth. This new technology is a game-changer because it results in quantities of algae production necessary for commercial use.”

At the end of last year, Air New Zealand also successfully conducted a test flight powered by second-generation biofuel.

At the core of Light Immersion Technology is an innovative approach at bringing light to the algae culture in both open ponds and closed bioreactors through a system of light rods which extend deep into the algae culture. By distributing light below the surface “shade” layer and releasing the light in controlled locations, algae cultures can grow denser. In external canal systems, the rods distribute light from the sun into the culture. This abundant and free energy source is ideal for generating large amounts of algae for use as biofuels.

In closed bioreactors, the rods evenly distribute more readily absorbed red and blue spectrum light from high efficiency LEDs. While the LEDs increase the cost of production, algae grown in these systems are used for higher value markets such as nutraceuticals.

“In order to grow algae in the large-scale, cost-efficient manner needed for biofuels, we have specifically designed our technology to require as little energy as possible,” said Weaver. “Light Immersion Technology has all of the attributes needed to allow algae to compete with petroleum. It is designed as a passive, low input, net energy positive system which is inexpensive to mass produce.”

Because Light Immersion Technology is designed to be independent of the light source, distributing solar as well as artificial light, Bionavitas can leverage its technology across many marketplaces. Using the high quality, high density algae produced with Light Immersion Technology, Bionavitas plans to make the technology available for three distinct purposes:

Biofuels:

Light Immersion Technology dramatically increases the yield and lowers the cost of algae production, thereby enabling algae’s future as a biofuel feedstock that is renewable, carbon neutral, and can be produced at a comparable cost to current petroleum resources.

Health:

To address the nutraceutical and pharmaeutical markets, Bionavitas will put its Light Immersion Technology to work in a series of closed bioreactors to create high quality algae that meets the specifications of the health industry.

Environment:

By co-locating with a heavy industrial or power generation operation, they will put algae to work in cleaning up toxic and/or contaminated water sources and capturing large carbon dioxide emissions – effectively removing toxins such as high concentrations of heavy metals or excess nutrients as well as reducing greenhouse gas emissions.