When you take a dip in the ocean, nuclear fuel is probably the farthest thing from your mind. Uranium floats in Earth's oceans in trace amounts of just 3 parts per billion, but it adds up. Combined, our oceans hold up to 4.5 billion tons of uranium -- enough to potentially fuel the world's nuclear power plants for 6,500 years.
Countries such as Japan have examined the ocean as a uranium source since the 1960s, but previous approaches have been too expensive to extract the quantities needed for nuclear fuel. Now researchers at the Department of Energy's Pacific Northwest National Laboratory and Oak Ridge National Laboratory are tweaking one of those concepts with the goal of making it more efficient and cost-competitive. The research is being done for the Department of Energy's Office of Nuclear Energy.
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