The day when planes, trucks and cars are commonly revved up on pond scum may be on the near horizon thanks to a technological advance that continuously turns a stream of concentrated algae into bio-crude oil. From green goo to crude takes less than an hour.
The goo contains about 10 percent to 20 percent algae by weight. The rest is water. This mixture is piped into a high-tech pressure cooker where temperatures hover around 660 degrees Fahrenheit and pressures of 3,000 pounds per square inch to keep the mixture in a liquid phase.
Inside the cooker are “some technology tricks that other people don’t have” that help separate the plant oils and other minerals such as phosphorous from the water, Douglas Elliott, a fellow at the Department of Energy’s Pacific Northwest National Laboratory in Richland, Wash., told NBC News.
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