Did water on the moon come from asteroids?

[Anomalocaris]

Asteroids found to be the moon's main 'water supply'

Water reserves found on the moon are the result of asteroids acting as "delivery vehicles" and not of falling comets as was previously thought. Using computer simulation, scientists from MIPT and the RAS Geosphere Dynamics Institute have discovered that a large asteroid can deliver more water to the lunar surface than the cumulative fall of comets over a billion-year period. Their research is discussed in an article recently published in the journal Planetary and Space Science.

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[Merc14]

I wonder how difficult it is and how much power is required, to separate this water from the minerals it is bound to?

[Waspie_Dwarf]

I wonder how difficult it is and how much power is required, to separate this water from the minerals it is bound to?

When you are producing enough energy to vaporise rock then there is going to be more than sufficient heat to drive off the water.