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Chinese scientists report way to extract hypersonic weapon fuel boron from seawater

Inspired by ‘novel sustainable technology’ research, the team designs a single, powerful system using solar energy for extraction

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Scramjet engines are among the technologies requiring boron. Chinese scientists say they have developed a method to extract boron from seawater. Photo: Getty Images
Shi Huang

Scientists from Northwest A&F University in China have developed an innovative technology to extract and collect boron from seawater.

Boron is a lightweight element used as solid fuel in scramjet engines on some advanced Chinese hypersonic weapons.

Neodymium-iron-boron rare earth magnets – used extensively in industrial and military applications – have drawn particular attention amid ongoing trade tensions over critical minerals. These high-performance rare-earth magnets not only rely on neodymium and iron but also require boron during manufacturing, making access to all three elements strategically important in global supply chains.

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China has the highest demand for boron worldwide but it is not a major producer. Turkey and the United States together produce most of the world’s boron minerals.

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Seawater contains trace amounts of boron, which traditional reverse osmosis desalination technology cannot remove, and may even concentrate. Long-term consumption of purified water containing boron is harmful to human health.

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