Electrochemical reduction of different Ag( i )-containing solutions in bioelectrochemical systems for recovery of silver and simultaneous power generation

), due to its high standard reduction potential. The lower performance in other reactors was due to the complexity of solutions, other co-existing metals (mixed metal solution), and lower standard reduction potential. In general, the existing forms of Ag(i) in solutions affect the Ag(i) reduction rate. This further influences the Ag removal efficiency, morphology of electrodeposits, and power generation.