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Table 5 ANOVA and t-Test table for comparison of nutrient removal by the hydroponic treatment units planted with T. latifolia and the control unit in terms of statistical significance

From: Suitability of nutrients removal from brewery wastewater using a hydroponic technology with Typha latifolia

ANOVA
TKN
 Source of Variation SS df MS F Interference P-value
 Between (Inlet and control) and (Inlet and HUs) 1892.84 2 946.4 25.34 Sa P < 0.001
 Between (HU1 andHU2), (HU1 and HU3) and (HU2 and HU3) 16.6 2 8.3 0.36 P > 0.70
NH4 + -N
 Source of Variation SS df MS F Interference P-value
 Between (Inlet and control) and (Inlet and HUs) 578.99 2 289.5 31.61 S P < 0.001
 Between (HU1 andHU2), (HU1 and HU3) and (HU2 and HU3) 17.08 2 8.54 3.59 P > 0.05
NO3--N
 Source of Variation SS df MS F Interference P-value
 Between (Inlet and control) and (Inlet and HUs) 153.36 2 76.68 11.65 S P < 0.001
 Between (HU1 andHU2), (HU1 and HU3) and (HU2 and HU3) 6.06 2 3.03 0.61 P > 0.05
PO4–3-P
 Source of Variation SS df MS F Interference P-value
 Between (Inlet and control) and (Inlet and HUs) 261.05 2 130.5 9.97 S P < 0.001
 Between (HU1 andHU2), (HU1 and HU3) and (HU2 and HU3) 4.51 2 2.26 0.29 P > 0.05
t-Test
 nutrients treated TKN NH4+ − N NO3- - N PO4–3- P
 Treatment units CTRL
HUS
CTRL
HUS
CTRL
HUS
CTRL HUS
 Mean 19.77
10.13
18
11.14
9.64
6.39
9.86 6.25
 Variance 24.56
15.91
8.33
0.47
6.37
3.63
6.62 7.52
P value P < 0.01 P < 0.05 P < 0.05 P < 0.05
 Interference S S
  1. Sa - significance