Table 3.

Growth, nitrate reduction and sulfate accumulation of strains S8 and S11 with 1, 5, 10, and 20 g L⁻¹ of SLES (average values ± standard deviation)

		SLES concentration
Strains	Parameters	1 g L−1	5 g L−1	10 g L−1	20 g L−1
S8	NO3 − red (mmol L−1)	16.7 ± 2.5	18.0 ± 0.4	18.7 ± 0.4	18.9 ± 0.3
	NO2 − (mmol L−1)	10.9 ± 0.2	0.0 ± 0.0	0.0 ± 0.0	0.0 ± 0.0
	SO4 2− (mmol L−1)	1.2 ± 0.5	4.5 ± 0.1	7.2 ± 0.1	3.9 ± 0.3
	ODmax	0.072 ± 0.004	0.203 ± 0.012	0.139 ± 0.007	0.072 ± 0.005
S11	NO3 − red (mmol L−1)	19.1 ± 0.1	19.3 ± 0.6	18.6 ± 0.3	18.8 ± 0.9
	NO2 − (mmol L−1)	0.0 ± 0.0	0.0 ± 0.0	0.0 ± 0.0	0.0 ± 0.0
	SO4 2− (mmol L−1)	1.3 ± 0.1	3.6 ± 0.3	6.5 ± 0.1	3.0 ± 0.2
	ODmax	0.354 ± 0.024	0.468 ± 0.046	0.568 ± 0.65	0.580 ± 0.083

Initial NO₃ ⁻ concentration was around 19 mM for all tests

NO ₃ ⁻ _red nitrate reduced, NO ₂ ⁻ nitrite accumulated in the medium, SO ₄ ²⁻ sulfate accumulated in the medium, OD _max after 22 and 40 h for strains S8 and S11, respectively