Photo Credit: CSIRO / Wikimedia
Microalgae.

Researchers at Tel Aviv University have discovered that algae can yield mass quantities of hydrogen, “the world’s cleanest energy source.”

The scientists revealed in the findings of back-to-back studies published in Plant Physiology and Biotechnology for Biofuels, that microalgae produce hydrogen, a clean fuel of the future. The researchers also suggested in their studies a possible mechanism to jump-start mass production of this environmentally-friendly energy source.

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The research was led by Dr. Iftach Yacoby, head of TAU’s renewable energy laboratory, and Rinat Semyatich, Haviva Eisenberg, Iddo Weiner and Oded Liran, his students at the School of Plant Sciences and Food Security at TAU’s Faculty of Life Sciences.

Researchers in the past believed that algae only produce hydrogen in the course of a single micro burst at dawn, lasting just a few minutes. But Yacoby and his team used highly sensitive technology to discover that algae produce hydrogen from photosynthesis all day long.

Armed with this discovery, the team harnessed genetic engineering to increase algae’s production of this clean energy source by 400 percent.

Laboratory tests revealed that algae create hydrogen with the assistance of the enzyme hydrogenase, which breaks down when oxygen is present. The researchers discovered effective mechanisms to remove oxygen so hydrogenase can keep producing hydrogen.

“The discovery of the mechanisms makes it clear that algae have a huge underutilized potential for the production of hydrogen fuel,” Yacoby said. “The next question is how to beef up production for industrial purposes — to get the algae to overproduce the enzyme.”

Some 99 percent of the hydrogen produced in the United States comes from natural gas. But the methods used to draw hydrogen from natural gas are toxic — and wasteful — he said.

“I grew up on a farm, dreaming of hydrogen,” said Yacoby. “Since the beginning of time, we have been using agriculture to make our own food. But when it comes to energy, we are still hunter-gatherers. Cultivating energy from agriculture is really the next revolution. There may be other ways to produce hydrogen, but this is the greenest and the only agricultural one.

“The world burns in just one year energy it took the earth over a million years to produce,” Yacoby continued. “We must stop being hunters and gatherers of energy. We must start producing clean energy — for our children and for our children’s children.”

Yacoby is now researching synthetic enzymes capable of increasing hydrogen production from microalgae to industrial levels.


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Hana Levi Julian is a Middle East news analyst with a degree in Mass Communication and Journalism from Southern Connecticut State University. A past columnist with The Jewish Press and senior editor at Arutz 7, Ms. Julian has written for Babble.com, Chabad.org and other media outlets, in addition to her years working in broadcast journalism.