Table 5 A statistical comparison of formaldehyde removal efficiency with the variables examined.

From: Evaluating the efficiency of formaldehyde degradation from aqueous environment by sonozone technique

Variable

R2

ANOVA[p-value]

F

df

Sum of squares (SS)

Mean squares (MS)

Formaldehyde concentration

0.996

0.001 [S*]

51.4

1

245.67

245.67

Ozone concentration

0.806

0.003 [S*]

10.5

1

50.12

50.12

Time

0.762

0.005 [S*]

8.5

1

40.00

40.00

Electric power

0.780

0.004 [S*]

10.1

1

47.00

47.00

pH

0.814

0.002 [S*]

24.5

1

115.00

115.00