The 2nd annual Biofuels International expo & conference is now just around the corner on the 27-28th May in Amsterdam – over 200 companies are now registered to attend the event – don’t miss out!

The event will give you updates on European regulations, new cellulosic ethanol and BTL developments, the potential of feedstocks such as algae, jatropha and sugarbeet, overcoming storage and handling challenges, being a sustainable producer, gaining project finance and risk analysis.

Process should take more carbon from the atmosphere than what it puts in

By Irene Klotz

Take some NASA-developed plastic membranes, add algae and municipal waste water and float it out to sea. What have you got? An environmentally friendly alternative to U.S. dependence on foreign oil, says one NASA scientist.

Just a few hours ago, the world’s first pair of cars to run on algae biodiesel were announced at the 2008 Sundance Film Festival. The cars were prominently displayed outside the world premier of Fields of Fuel, Josh Tickell’s stunning new documentary on biodiesel and the state of a world dependent on petroleum.

Burning a B20 blend of algal biodiesel, these vehicles are the first to make use of a potentially revolutionary way to grow algae for biodiesel production. Solazyme, a synthetic biology company out of San Francisco, has developed a way to grow algae that essentially hijacks the photosynthetic process to optimize oil production. Like any good photosynthetic organism, algae convert the sun’s energy into sugars, which then power the oil-producing process (algae can be over 50% oil). But getting the algae enough sunlight to grow efficiently has been a particular stumbling block to large scale algae production.

gas 2.0

Just three years ago, Colorado-based inventor Jim Sears shuttered himself in his garage and began tinkering with a design to mass-produce biofuel. His reactor (plastic bags) and his feedstock (algae) may have struck soybean farmers as a laughable gamble. But the experiment worked, and today, Sears’ company, Solix Biofuels in Fort Collins, is among several startups betting their futures on the photosynthetic powers of unicellular green goo.

The science is simple: Algae need water, sunlight and carbon dioxide to grow. The oil they produce can then be harvested and converted into biodiesel; the algae’s carbohydrate content can be fermented into ethanol. Both are much cleaner-burning fuels than petroleum-based diesel or gas.

The reality is more complex. Trying to grow concentrations of the finicky organism is a bit like trying to balance the water in a fish tank. It’s also expensive. The water needs to be just the right temperature for algae to proliferate, and even then open ponds can become choked with invasive species. Atmospheric levels of CO2 also aren’t high enough to spur exponential growth.

Solix addresses these problems by containing the algae in closed “photobioreactors”—triangular chambers made from sheets of polyethylene plastic (similar to a painter’s dropcloth)—and bubbling supplemental carbon dioxide through the system. Eventually, the source of the CO2 will be exhaust from power plants and other industrial processes, providing the added benefit of capturing a potent greenhouse gas before it reaches the atmosphere.