Table 2.

Calibrated Model Parameters for All Model Simulations of Model Variant S1a

parameters	definition	value	unit
Parameters for Microbial Respiration of Nitrate Reduction to Nitrite
k1	rate constant	7.99 × 10−5	mol s−1 mol biomass−1
kA	electron acceptor kinetic factor	2.38 × 10−5	dimensionless
kD	electron donator kinetic factor	2.18 × 10−3	dimensionless
Parameters for Microbial Respiration of Nitrite Reduction to Dinitrogen
k2	rate constant	1.10 × 10−4	mol s−1 mol biomass−1
kA	electron acceptor kinetic factor	3.50 × 10−6	mol L−1
kD	electron donator kinetic factor	2.25 × 10−5	dimensionless
Parameters for Microbial Enzymatic NDFO
k3	rate constant	5.0–12.5 × 10−5 a	mol s−1 mol biomass−1
kA	electron acceptor kinetic factor	1.00–5.00 × 10−4 a	dimensionless
kD	electron donator kinetic factor	1.00–2.50 × 10−3a	mol L−1
kd	encrustation inhibition	7.59 × 10−3	mol L−1
Solution Geochemistry
k4	chemodenitrification	rate 9.84 × 10−4 b	mol−1 L sec−1
k5	GR-CO3 oxidation rate	4.12 × 10−5 c	sec−1

^aCalibrated separately using nongrowth experiments (Figure S1).

^bLiterature value taken from Kopf et al.³⁶

^cCalibrated separately using data collected by Hansen et al. (Figure S2).