annodomini2 wrote:
Boron is the 6th common ion in the sea. 1m3 sea water contains 27.68g H3BO3.
If the energy is used for desalination it can be possible to in same time extract the boron.
Could the hydrogen be extracted intact to provide rocket fuel?
You totally misunderstand the process. Hydrogen is consumed, not produced. The element produced is He3. It could be used for dirigibles, or party balloons.