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Sewage sludge ash 133

Figure 5.4 XRD patterns for SSA before (bottom) and after (top) acid wash with sulphuric
acid (Donatello et al., 2010a). SSA, Sewage sludge ash.

Table 5.11 Chemical composition (traces, ICP-AES) of sewage sludge ash calcined in the

range of 300 800 C
Element (mg/L) Temperature of calcination ( C)

300 400 500 600 700 800
Ca 342.64 394.20 470.46 565.18 687.24 712.68
Fe 33.82 33.87 33.98 34.23 34.16 34.08
Mg 37.74 46.34 55.54 57.38 69.42 78.82
Mn 0.18 0.20 0.20 0.22 0.33 0.29
Na 40.64 41.76 61.44 61.36 79.23 37.78
P 43.91 43.95 43.26 44.28 55.82 69.78
K 16.82 17.03 17.25 15.04 18.96 14.55
Cd 0.07 0.07 0.08 0.07 0.04 0.02
Co 0.026 0.018 0.013 0.015 0.021 0.019
Cr 0.38 0.39 0.42 0.41 0.79 0.74
Ba 0.31 0.33 0.36 0.38 0.53 0.62
Cu 1.27 1.28 1.33 1.09 1.04 0.79
Ni 0.27 0.30 0.29 0.42 0.67 0.83
Pb 1.07 1.11 1.13 1.09 1.04 0.79
V 0.05 0.07 0.09 0.08 0.10 0.04
Zn 3.55 3.76 3.79 3.83 3.82 4.02
Adapted from Naamane, S., Rais, Z., Taleb, M., 2016. The effectiveness of the incineration of sewage sludge on the
evolution of physicochemical and mechanical properties of Portland cement. Constr. Build. Mater. 112, 783 789.
Available from: https://doi.org/10.1016/j.conbuildmat.2016.02.121.