. 2018 Feb 24;102(7):3387–3397. doi: 10.1007/s00253-018-8853-4

Table 1.

First-order degradation rate constants (k) ± standard deviation over multiple spikes in the microcosms under different redox conditions

Condition	MtBE [day⁻¹]		MtBE after re-addition^a [day⁻¹]	Benzene [day⁻¹]		Benzene after re-addition^a [day⁻¹]
Condition	− medium	+ medium	MtBE after re-addition^a [day⁻¹]	− medium	+ medium	Benzene after re-addition^a [day⁻¹]
Unamended control	0.02 ± 0.002		0.02 ± 0.005	0.01 ± 0.005		–
Medium addition without added electron acceptors		0.07	0.03 ± 0.03		0.02	–
Nitrate addition	ND	ND	ND	ND	0.02^b	0.08 ± 0.04^b
Chlorate addition	ND	ND	ND	0.01	0.39	–
Ferrihydrite addition	0.04	0.02	0.03 ± 0.003	0.01	0.08	–
Sulfate addition	0.03	0.06	0.02	0.02	0.07	–

ND no degradation up to 940 days, − no benzene re-added to the microcosm

^aWith medium addition, except for the unamended control

^bDegradation rate constant with a 5% (v/v) inoculation of culture liquid from a benzene-degrading, denitrifying biofilm community