Isolation and characterization of Chlorella sp. mutants with enhanced thermo- and CO2 tolerances for CO2 sequestration and utilization of flue gases

Table 3 Maximum biomass, maximum biomass productivity, CO₂ biofixation rate and specific growth rate of Chlorella vulgaris ESP-31 wild type and mutants under indoor and outdoor condition with simulated flue gas

Cultivation system	Strain	Maximum biomass (g/L)	Maximum biomass productivity (mg/L/day)	CO₂ biofixation rate (mg/L/day)	specific growth rate (day⁻¹)
Indoor with simulated flue gas	Wild type	0.15 ± 0.01	28.38 ± 1.83	53.35 ± 3.44	0.27 ± 0.02
	283	0.78 ± 0.02***	144.72 ± 0.17***	272.06 ± 0.31***	0.52 ± 0.07*
	359	0.64 ± 0.01***	103.21 ± 4.58**	194.03 ± 8.61**	0.35 ± 0.03
Outdoor with simulated flue gas	Wild type	0.53 ± 0.08	112.18 ± 10.66	210.89 ± 20.04	0.40 ± 0.11
	283	0.94 ± 0.10	243.15 ± 70.77	457.13 ± 133.05	0.55 ± 0.01
	359	0.89 ± 0.09	225.96 ± 27.48*	424.81 ± 51.66**	0.66 ± 0.23

Each datum indicates the mean ± SD from two experiments
* P < 0.05, **P < 0.01 and ***P < 0.001 were statistically significant as compared with Chlorella vulgaris ESP-31 wild type

ISSN: 2731-3654