Table 3.

Summary of the average nitrate reduction rates (in mM day⁻¹) observed in the in situ tests of the BN experiment, either in the absence or in the presence of additional electron donors, i.e. acetate or H₂, as indicated in Table 2

Test code	${\text{NO}}_3^{-}$ reduction rate in absence of additional electron donors	${\text{NO}}_3^{-}$ reduction rate in presence of additional electron donors
INT1_2011	0.04	–
INT1_2014	0.02	0.2–0.7
INT2_2011a	–	0.8
INT2_2011b	–	1
INT2_2013	0.02	1.2