Biomethanization of the Mixture of Cattle Manure, Pig Manure and Poultry Manure in Co-Digestion with Waste Peels of Pineapple Fruit and Content of Chicken-Gizzard - Part II: Optimization of Process Variables

Table 4: The results of ANOVA analysis for the second-order quadratic polynomial regression model

	Source	Sum of Squares	DF	Mean Square	F-Value	Prob>F
	Model	3.64	9	0.40	82.04	<0.0001
CBY	Residual: Lack of fit Pure Error	0.049 0.049 0.000	10 5 5	4.928E-003 9.856E-003 0.000
	Correlation Total	3.69	19
R² = 0.9866; Adjusted R²= 0.9746; Predicted R² = 0.8852; Adequate Precision = 30.669
	Model	362.19	9	40.24	120.08	<0.0001
BC	Residual: Lack of fit Pure Error	3.35 3.35 0.000	10 5 5	0.34 0.67 0.000
	Correlation Total	365.54	19
R² = 0.9908; Adjusted R² = 0.9826; Predicted R² = 0.9193; Adequate Precision = 35.635
	Model	51.48	9	5.72	109.48	<0.0001
HRT	Residual: Lack of fit Pure Error	0.52 0.52 0.000	10 5 5	0.052 0.10 0.000
	Correlation Total	52.00	19
R² = 0.9900; Adjusted R²= 0.9809; Predicted R² = 0.9237; Adequate Precision = 43.104