Turning Algae Into Environmentally Friendly Fuel Just Got Faster and Smarter

Algae

Algae in the Mediterranean sea. (© damedias/Adobe)

Was your favorite beach closed this summer? Algae blooms are becoming increasingly the reason to blame and, as the climate heats up, scientists say we can expect more of the warm water-loving blue-green algae to grow.

"We have removed a significant development barrier to make algal biofuel production more efficient and smarter."

Oddly enough, the pesky growth could help fuel our carbon-friendly options.

This year, the University of Utah scientists discovered a faster way to turn algae into fuel. Algae is filled with lipids that we can feed our energy-hungry diesel engines. The problem is extracting the lipids, which usually requires more energy to transform than the actual energy we’d get – not achieving what scientists call “energy parity.”

But now, the University of Utah team has discovered a new mix that is more efficient and much faster. We can now extract more power from algae with less waste materials after the fact. Paper co-author Dr. Leonard Pease says, “We have removed a significant development barrier to make algal biofuel production more efficient and smarter. Our method puts us much closer to creating biofuels energy parity than we were before.” 

Next Up

Algae has a lot going for it as an alternative fuel source. It grows fast and easily, absorbs carbon dioxide, does not compete with food crops for land, and could produce up to 60 times more oil than standard land-based energy crops, according to the U.S. Department of Energy. Yet the costs of algal biofuel production are still expensive for now.

According to Science Daily, only about five percent of total primary energy use in the United States came from algae and other biomass forms. By making the process more efficient, America and other nations could potentially begin relying on more plentiful resources – which, ironically, are more common now because of climate change.

Algae fuel efficiency is already a proven concept. A decade ago, Continental Airlines completed a 90-minute Boeing 737-800 flight with one engine split between biofuel and aircraft fuel. The biofuel was straight from algae. (Other flights were done based on nut fuel and other alternative sources.) The commercial airplane required no modification to the engine and the biofuel itself exceeded the standards of traditional jet fuel.

The problem, as noted at the time, is that biofuels derived from algae had yet to be proven as “commercially competitive.”

The University of Utah’s discovery could mean cheaper processing. At this point, it is less about if it works and more about if it is a practical alternative. 

However, it’s unclear how long it will take for algae to become more mainstream, if ever.

Open Questions 

Higher efficiency and simpler transformations could mean lower prices and more business access. However, it’s unclear how long it will take for algae to become more mainstream, if ever. The algae biofuel worked great for a relatively sophisticated Boeing 737 engine, but your family car, the cross-country delivery trucks and other less powerful machines may need to be modified – and that means the industry-at-large would have to revise their products in order to support the change. 

Future-focused groups are already looking at how algae can fuel our space programs, especially if it is more renewable, safe and, potentially, cheaper than our traditional fuel choices. But first, it is worth waiting and seeing if corporations and, later, citizens are willing to take the plunge.

What do you think?

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