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Separation Process (Thermal Diffusion (Advantage (most economical method…
Separation Process
Centrifugal
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Advantage: simple set up, cheap
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Gaseous Diffusion
molecules of a lighter isotope would pass through a porous barrier more readily than those of a heavier isotope.
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challenges are the need for a porous barrier to accommodate uranium hexafluoride, one of the most corrosive gases in the world.
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Thermal Diffusion
a relative motion of the components of a gaseous mixture or solution, which is established when there is a temperature gradient in a medium
if two gases or liquid are exposed to a temperature gradient between two surfaces, the atom with the lower molecular weight will tend toward the hotter surface. The two gases will separate until a concentration gradient occurs resulting in concentration diffusion of equal magnitude in the opposite direction
Advantage
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can easily be enriched to any desired concentration if a proper thermal diffusion cascade is constructed
Electrolysis
technique that uses a direct electric current (DC) to drive an otherwise non-spontaneous chemical reaction
Electrolysis of water produces hydrogen gas at the cathode, which contains a lower proportion of deuterium than the original water. The isotope effect stems from the differences in the rates of dissociation of a proton (H+) and a deuteron (D+) from water, and the rates of neutralization of these hydrated ions, and thus has a kinetic basis
Electromagnetic
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Its mechanism is similar to mass spectrometer (A charged particle will follow a circular trajectory when passing through a uniform magnetic field)