Time	Amount of NH4HCO3 added to the anode feed (g/L)	Phase
Day 0   – Day 16	2.26	I
Day 16 – Day 26	4.5	II
Day 26 – Day 33	9	III
Day 33 – Day 40	14.1	IV
Day 40 – Day 47	20	V
Day 47 – Day 54	25.4	VI
Day 54 – Day 63	31	VII