DESIGN AND OPTIMIZATION FOR HAZARDOUS JAROSITE WASTE RECYCLING IN ENVIRONMENTALLY SUITABLE COMPOSITE PRODUCTS USING RESPONSE SURFACE METHODOLOGY - Management of Hazardous Residues Containing Cd - page 89

Actual Components:
X 1 = Jarosite = 515 g
X 2 = Clay = 282.5 g
X 3 = PCCRs = 202.5 g

18.84 18.84

14.13 14.13

9.42 9.42

4.71 4.71

X1 (890 g) X1 (890 g)

X2 (110 g) X2 (110 g)

X3 (615 g) X3 (615 g)

X3 (0 g) X3 (0 g)

X1 (275 g) X1 (275 g)

X2 (725.g) X2 (725.g)

Figure 25. Response 3D graph for leachate of Pb (ppm) in the s/s sintered Jarosite
waste -clay -PCCRs composite bricks.

X1 X1 X1

12.97 12.97 12.97

X3 X3 X3

9.20 9.20 9.20

5.44 5.44 5.44

X2 X2 X2

X2 X2 X2

1.68 1.68 1.68

X3 X3 X3

X1 X1 X1

-2.07 -2.07 -2.07

-0.390 -0.390 -0.390 -0.178 -0.178 -0.178 0.035 0.035 0.035 0.247 0.247 0.247 0.460 0.460 0.460

Deviation from Reference Blend Deviation from Reference Blend Deviation from Reference Blend

Figure 26. Response trace plot for leachate of Cd (ppm) in the s/s sintered Jarosite
waste-clay -PCCRs composite bricks.