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

Environmental Sciences Europe

Table 1 ANOVA table of the mean square values

Source of variation	DF	Mean square			Source of variation	DF	Mean square
Source of variation	DF	Residual Cd	Biomass	OD	Source of variation	DF	Chl. a	Carotenoids
Replications	2	0.001^ns	0.0006^ns	0.0013^ns	Replications	2	0.001^ns	0.0002^ns
Algae (A)	1	0.068^**	0.0002^ns	0.0020^**	Algae (A)	1	1.036^**	0.0020^**
Concentrations (C)	3	6.002^**	0.0061^ns	0.0720^**	Concentrations (C)	3	36.076^**	0.1910^**
AC	3	0.017^**	0.0004^ns	0.0010^**	AC	3	0.194^**	0.0130^**
Days (D)	5	1.561^**	0.0019^ns	0.0120^**	Days (D)	3	2.817^**	0.0210^**
AD	5	0.014^**	0.0015^ns	0.0002^**	AD	3	0.174^**	0.0020^**
CD	15	0.328^**	0.0003^ns	0.0110^**	CD	9	0.124^**	0.0380^**
ACD	15	0.001^**	0.0025^ns	0.0003^**	ACD	9	0.126^**	0.0030^**
Error	94	0.002	0.001	0.0002	Error	62	0.001	0.0001

(^ns) there was no difference between the treatments at the 5% significance level.
(**) there was a high difference between the treatments at the 5% significance level (P ≤ 0.05)