You can obtain a few things from desalination brines. Magnesium is the most plentiful, besides salt, of course. There's also some sulfur, bromine and boron that

You can obtain a few things from desalination brines. Magnesium is the most plentiful, besides salt, of course. There's also some sulfur, bromine and boron that might be worth recovering. It's mostly theoretical, of course.