Research Article

Optimization of Aqueous Two-Phase Systems for the Recovery of Soluble Proteins from Tannery Wastewater Using Response Surface Methodology

Table 7

ANOVA for recovery (%) without outlier.

Source DF Seq SS Adj SS Adj MS

Regression 9483.698 483.698 53.744 35.62 0.000*
Linear 3180.715 182.794 60.931 40.39 0.000*
Square 3220.481 220.481 73.494 48.71 0.000*
Interaction 382.501 82.501 27.500 18.23 0.000*
Residual Error 913.578 13.578 1.509
Lack-of-Fit 410.874 10.874 2.718 5.03 0.053
Pure Error 52.704 2.704 0.541

Total 18497.275

*Significant at 95% confidence level.