Table 1.

Kinetic parameters of P. purpureum cultivation under different light intensities and NaNO₃ concentrations (maximum specific growth rate (µ_max), latency phase (λ), duplication time of microalgae cells (G), determination coefficient (R²) and productivity).

		Light Intensity (µmol m−2 s−1)
		30			65			100
		NaNO3 (g L−1)			NaNO3 (g L−1)			NaNO3 (g L−1)
		0.075	0.225	0.45	0.075	0.225	0.45	0.075	0.225	0.45
Gompertz model constants	a	0.74	0.88	2.05	1.33	1.74	1.04	1.59	1.03	2.27
	b	9.3	14.26	1.51	1.76	1.16	3.11	1.42	1.28	1.27
	c	0.07	0.09	0.007	0.013	0.006	0.017	0.009	0.005	0.008
µmax (d−1)		0.05	0.08	0.015	0.018	0.011	0.018	0.015	0.005	0.018
λ (h)		122.3	139.1	70.64	56.1	25.72	124.7	45.13	56	34.31
G (h)		13.74	8.22	46.96	38.23	62.27	39.37	46.64	45.78	39.2
R2 (%)		93.83	94.71	95.42	88.6	91.49	86.2	94.82	91.47	95.59
Productivity (mg L−1 d−1)		173.2	151.8	138.6	349.8	208.2	160.6	386	258	259.9