[annodomini2]

Torulf 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?

[annodomini2]

Torulf wrote: This may also be relevant.
http://www.livescience.com/technology/070501_carbon_capture.html

The only argument I would have with that is as you pass the air through the machine I would guess you would have to compress it, which heats the air, possibly offsetting the benefit.

[annodomini2]

Interesting idea, would like to know the efficiency of such a system and obviously cost will be a determining factor.

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