Water-based compositions suitable for the hydration of a mammal, and particularly hydration of a human by oral or topical methods, and for industrial uses such as cooling, and the making of solutions and mixtures. A method for producing a beverage, an industrial process water, an industrial solvent, or topical dermatological composition includes: providing a water source, the water molecules having oxygen or hydrogen atoms of different isotopes, (i) fractionating the water source to produce a fraction enriched in water molecules having an abundance of at least one of the oxygen or hydrogen isotopes being greater or less than the abundance found in the water source, or (ii) where the water source is already enriched in heavy water, fully or partially maintaining the level of enrichment.

Water-based compositions suitable for the hydration of a mammal, and particularly hydration of a human by oral or topical methods, and for industrial uses such as cooling, and the making of solutions and mixtures. A method for producing a beverage, an industrial process water, an industrial solvent, or topical dermatological composition includes: providing a water source, the water molecules having oxygen or hydrogen atoms of different isotopes, (i) fractionating the water source to produce a fraction enriched in water molecules having an abundance of at least one of the oxygen or hydrogen isotopes being greater or less than the abundance found in the water source, or (ii) where the water source is already enriched in heavy water, fully or partially maintaining the level of enrichment.

Provided is an industrially feasible method for separating tritiated water from light water.

The method comprises: a step of removing tritiated water and heavy water from light water by adding heavy water to a liquid mixture containing tritiated water and light water, by converting into a gas hydrate consisting essentially of tritiated water and heavy water as the crystal structure under a condition of converting into the gas hydrate of at least one of heavy water and tritiated water, and yet keeping light water in the liquid state, and a step of separating tritiated water from heavy water by breaking the gas hydrate structure containing tritiated water and heavy water, so as to get a liquid mixture, by converting the liquid mixture containing tritiated water and heavy water into a gas hydrate containing tritiated water in the crystal structure under a condition of converting into a gas hydrate containing tritiated water in the crystal structure and yet keeping heavy water in the liquid condition and then, by breaking the gas hydrate structure of tritiated water, so as to collecting tritiated water in that order.

The present disclosure relates to a method for separating lithium from a lithium mixture, the method comprising: providing a first mixture (104) comprising lithium, lithium hydride, and at least a first compound among lithium deuteride and lithium tritide, the first mixture being at a first temperature: a first stirring step (108) adapted to stirring the first mixture: a first cooling step (110) adapted to cooling. preferably uniformly. the first mixture to a second temperature lower than the first temperature: the first stirring and cooling steps being adapted to deposit at least part of the first compound: and a first separation step (116) adapted to separating at least the deposited first compound from the first mixture. forming a second mixture (118) comprising at least lithium and lithium hydride.

The present disclosure relates to a method for separating lithium from a lithium mixture, the method comprising: providing a first mixture (104) comprising lithium, lithium hydride, and at least a first compound among lithium deuteride and lithium tritide, the first mixture being at a first temperature: a first stirring step (108) adapted to stirring the first mixture: a first cooling step (110) adapted to cooling. preferably uniformly. the first mixture to a second temperature lower than the first temperature: the first stirring and cooling steps being adapted to deposit at least part of the first compound: and a first separation step (116) adapted to separating at least the deposited first compound from the first mixture. forming a second mixture (118) comprising at least lithium and lithium hydride.