Piezo-tolerant natural gas-producing microbes under accumulating pCO2

Table 3 Kinetic parameters derived from the propionate degradation experiment

Parameter	pCO₂	0	1	3	5
Parameter	pH	7.8	7.1	6.3	6.1
A (mg L⁻¹)		283	283	266	258
λ (days)		2.8	3.4	3.8	16.8
r _smax (mg L⁻¹ day⁻¹)		72.8	58.5	35.5	4.8
Reactor r _smax (mg COD L⁻¹ day⁻¹)^b		546	441.5	268	36
Specific r _smax (mg g⁻¹ VS_added day⁻¹)		30.3	24.4	16.5	2.2
Relative µ _max (%)^a		100	80.5	54.5	7.3

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