Seems like there are some others wearing similar thinking caps, albeit 10 years ago
Which flummoxes me because the castner process was the one that _does not_ involve any chlorine. Perhaps the author of this paper is referring to the general principle here, which again is a mystery to me because the castner cycle I am referring to (sodium as an energy transport; [sodium + water] -> [heat, h2, caustic soda] to 'consume' it, [caustic soda + energy -> water, sodium] to produce it) doesn't have waste product at all other than water.
How did you find this? It's.. fascinating.