I won't speak to the purification aspect (though I suspect purification is quite trivial), but helium released into the atmosphere is wasted. Saying it's not destroyed is by the by, we aren't going to recover it from space as it rapidly escapes the atmosphere.
Shteou
joined 1 year ago
"A dream. It's perfect": Helium discovery in northern Minnesota may be biggest ever in North America
It's to hawk, to sell out in the open as a hawker would. https://en.wikipedia.org/wiki/Hawker_%28trade%29?wprov=sfla1
Quite