[…] in Memmott’s new reactor, during and after the nuclear reaction occurs, all the radioactive byproducts are dissolved into molten salt. Nuclear elements can emit heat or radioactivity for hundreds of thousands of years while they slowly cool, which is why nuclear waste is so dangerous (and why in the past, finding a place to dispose of it has been so difficult). However, salt has an extremely high melting temperature — 550°C — and it doesn’t take long for the temperature of these elements in the salt to fall beneath the melting point. Once the salt crystalizes, the radiated heat will be absorbed into the salt (which doesn’t remelt), negating the danger of a nuclear meltdown at a power plant.
Another benefit of the molten salt nuclear reactor design is that it has the potential to eliminate dangerous nuclear waste. The products of the reaction are safely contained within the salt, with no need to store them elsewhere. What’s more, many of these products are valuable, and can be removed from the salt and sold.
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“As we pulled out valuable elements, we found we could also remove oxygen and hydrogen,” Memmott said. “Through this process, we can make the salt fully clean again and reuse it. We can recycle the salt indefinitely.”
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Memmott’s molten salt nuclear reactor is 4 ft x 7ft, and because there is no risk of a meltdown there is no need for a similar large zone surrounding it. This small reactor can produce enough energy to power 1000 American homes. The research team said everything needed to run this reactor is designed to fit onto a 40-foot truck bed; meaning this reactor can make power accessible to even very remote places.
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Source: BYU profs create new micro nuclear reactor to produce nuclear energy more safely – BYU News
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