DESIGN AND OPTIMIZATION FOR HAZARDOUS JAROSITE WASTE RECYCLING IN ENVIRONMENTALLY SUITABLE COMPOSITE PRODUCTS USING RESPONSE SURFACE METHODOLOGY - Management of Hazardous Residues Containing Cd - page 86

47.99 47.99

37.09 37.09

26.20 26.20

15.30 15.30

4.40 4.40

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)

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

Figure 19. Response 3 D graph for shrinkage (%) of s/s sintered Jarosite waste -clay -
PCCRs composite bricks.

A A

1.94 1.94

1.81 1.81

C C

1.69 1.69

B B

B B

A A

1.57 1.57

C C

1.45 1.45

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

Deviation from Reference Blend Deviation from Reference Blend

Figure 20. Response trace plot for density (g/ cm 3 ) of s/s sintered Jarosite waste -clay -
PCCRs composite bricks.