Carbon and COD balancing
During steady state, carbon and electron (as chemical oxygen demand,
COD) balances were defined using the elemental metabolite matrix given
in Table S3 multiplied by the in- and outgoing rates in the reactor. COD
balances were set up for the cycle analyses by dividing the amount of
COD present in the metabolic compounds measured at a time in the cycle
by the measured COD at the start of the cycle.