Enzymatic Carbon Dioxide Capture

Table 2

Magnitude of the kinetic constants in (13) to (16) for a few buffers, according to reference [44].

Buffer	pH	𝑝𝐾a	𝐾𝑚^B(mM)	𝑘4 (M^−1 s^−1)	𝐾𝑖,app^HCO3−(mM)
Triethanolamine	8.4	7.8	1.2	5.4×10^8	10±1
HEPES*	8.2	7.5	3.5	2.1×10^8	10±1
4-methylimidazole	8.4	7.8	1.3	1.2×10^9	5.4±0.3
1-methylimidazole	8.0	7.2	2.4	2.9×10^8	6.5±0.4

^*HEPES: 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid.