Microbial fuel cells and “replication”

Some websites say that microbial fuel cells may replicate the way bacteria help make electricity from food, presumably without any actual bacteria. Is this/can this ever be possible, and if so, how would it be done?

(also, do microbial fuel cells produce waste similar to how the human digestive system does, and would it be possible to design one that makes no waste to be disposed of?)

submitted by /u/teenytoons2
[link] [comments]