[Malsua]

Originally Posted by twoplanekid

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Actually, in the Covanta plant all materials go into the combustion chamber. And, the amount that is left is about 10% of the original amount.

not the Covanta plant we are using but similar operation ->

Experience Covanta EfW Tour in Virtual Reality. Press Alt plus A for accessibility version.

So they pull the ferrous metals out after burning, then run it again over an eddy current separator to get the aluminum/copper. The guy in the tour video mentioned it's 10% of the original volume after burning. Then they pull out the metals. So it's less than 10% bottom ash that goes to the land fill. Like 5% .