Optimization of Preparation Conditions of Novel Adsorbent from Sugar Scum Using Response Surface Methodology for Removal of Methylene Blue

Table 4

Estimated values of coefficients for responses and .

Coefficient	Yield,		MB adsorption,
	Significance (%)			Significance (%)
	80.679	<0.01	10.480	<0.01
	−21.279	<0.01	11.790	<0.01
	−3.088	<0.01	−0.568	9.9
	−12.667	<0.01	3.002	0.275
	−10.536	<0.01	2.202	0.752
	−5.663	<0.01	−0.756	21.5

Statistically significant at the level <99.99%. Statistically significant at the level 99%.