Parameter

P1

P2

Optimum Condition

Aeration F1

93.993

94.581

1(aeration)

Humidity (ml) F2

0.999

0.949

1

Glucose (gr) F3

1.452

1.404

0.01

Bacteria (ml) F4

1.112

1.062

0.02

Composting (gr) F5

0.053

-----

0.01

Temp.(0C) F6

0.281

-----

35

Salt (gr) F7

0.000

-----

0.01

Urea (gr) F8

1.206

1.157

0.01

Other error

0.904

0.847

------

Oil removal percent in optimum conditions

64.4%

Table 7: The effect percent of each factor (P1), effect percent of more important parameters (P2) and optimum conditions for set 1, determined by the analysis of variance (ANOVA).