Does fusion occur in a black hole accretion disk? If so, what elements are created?

Hi! Googling this question reveals the answer is yes, it does result in fusion.

As far as the output, according to this top result paper, that depends heavily on the size of the black hole, the size and speed of the accretion disk, and the medium from which the black hole is drawing (like a white dwarf vs interstellar gas).

From what I can make out--and I have no background--the author maps out results as high in weight as nickel.

Edit: grammar