Environmental Engineering Reference
In-Depth Information
Henry's constant H
Equilibrium
d q
/
d Y
Actual
Initial loading 1
Distance z
Actual
Equilibrium curve
Clean purge
Equilibrium
Fluid concentration Y
Time t
G
d q d Y
Design Equation
:
V
=z
/
t =
b
ρ
/
b
ρ
H
b
Desorption Time:
t dt =
L
b
Minimum Bed Requirement:
W m =1
/
H kg bed
/
kg carrier
Figure 7.8 Type I isotherm: desorption [10].
Equilibrium curve
Equilibrium
Feed
F
F
Equilibrium
Actual
Clean bed
Actual
Henry's constant H
I
Fluid concentration Y
Distance z
Time t
G b
Design Equation: V
=
z
/
t
=
b d q /d Y
b H
L
Breakthrough Time: t bt
=
G b
Minimum Bed Requirement: W m = 1
/
H kg bed
/
kg carrier
Figure 7.9 Type III isotherm: adsorption [10].
 
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