
62 Advanced Process Control and Simulation for Chemical Engineers
FIGURE 4 The plots of log D’ – log [Cu] – 4pH against log [
22
RH
] of the extraction of Cu(I)
with lauric acid diluted in benzene at 298.2 K. Initial concentration of Cu(I) (M): () 5×10
–4
; ()
2.5×10
–3
; (Δ) 5×10
–3
; () 2.5×10
–2
.
TABLE 1 Equilibrium data of (CuSO
4
+ lauric acid + benzene) at 298.2K: influence of luaric
acid concentration. C
Cu,initial
= 5×10
–3
M , C
Na
2
So
4
= 0.1 M (14.204 g/dm
3
).
Cu
⎡⎤
⎢⎥
⎣⎦
3
10
−
×
(mol-g/dm
3
)
[]
Cu
3
10
−
×
(mol-g/dm
3
)
D’ pH
22
RH
(mol-g/dm
3
)
1.88 3.12 0.60 4.52 0.05
1.89 3.11 0.61 4.30 0.10
1.91 3.09 0.62 4.18 0.15
1.99 3.01 0.66 4.05 0.25
2.05 2.95 0.70 3.91 0.35