Environmental Engineering Reference
In-Depth Information
Adsorption
Desorption
q
Y
Figure 7.6
Type I isotherm to demonstrate movement of solute front.
F
Equilibrium curve
Equilibrium
Feed
Feed
Actual
Operating line;
slope
Distance
z
∆
q
/∆
Y
Actual
Clean bed
Equilibrium
Time
t
Fluid concentration
Y
Equilibrium curve
F
Equilibrium
Actual
Feed
Preloading
Operating line;
slope
∆
q
/∆
Y
Distance
z
Preloaded bed
Actual
Equilibrium
Fluid concentration
Y
Time
t
G
qY
Design Equation:
V = z
/
t
=
b
ρ ∆∆
/
b
ρ ∆∆
qY
G
/
Breakthrough Time:
t
bt
=
b
⋅
L
b
Minimum Bed Requirement:
W
m
=
∆
Y
/∆
q
kg bed
/
kg carrier
Figure 7.7
Type I isotherm: adsorption [10].
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