Phycoremediation of contaminated water by cadmium (Cd) using two cyanobacterial strains (Trichormus variabilis and Nostoc muscorum)

Environmental Sciences Europe

Table 2 Relative performance of the 3 factors (days, concentrations, and algae)

Treatments	Res. Cd (ppm)	OD₆₇₈	Treatments	Chl. a (μg mL⁻¹)	Carotenoids (μg mL⁻¹)
Algae (A)
A₁	0.364b	0.048b	A₁	1.129a	0.079a
A₂	0.407a	0.056a	A₂	0.921b	0.071b
F. Test	**	**	F. Test	**	**
Concentrations (C)
C₀	0.000d	0.118a	C₀	2.849a	0.207a
C_0.5	0.179c	0.042b	C_0.5	0.6287b	0.049b
C₁	0.423b	0.027c	C₁	0.3663c	0.027c
C₂	0.940a	0.020c	C₂	0.2567d	0.016d
LSD	0.0222	0.00702	LSD	0.01813	0.005771
Days (D)
D₀	0.875a	0.023f	D₀	0.792c	0.045d
D₄	0.446b	0.035e	D₇	0.758d	0.061c
D₈	0.318c	0.047d	D₁₄	1.051b	0.079b
D₁₂	0.229d	0.058c	D₂₁	1.500a	0.114a
D₁₆	0.220d	0.066b
D₂₁	0.226d	0.084a
LSD	0.02563	0.008106	LSD	0.01813	0.005771

*The same letters attached to the results indicate no significant differences at the 5% significance level (P ≤ 0.05)