Environmental Engineering Reference
In-Depth Information
Fines and slime
Backwash
Water
B
Water
A
Feed
C
Adsorption
Barren
Product
D
Elution
Eluant
Eluted resin
Figure 8.7
Higgins moving packed bed [1]. Copyright 1987 John Wiley & Sons,
Inc. This material is used by permission of John Wiley & Sons, Inc.
with an equation that describes kinetics may be used to design a full-size ion-exchange
column. The kinetic equation given for an adsorption column design will often apply to
ion exchange also [7]:
ln
C
0
1
k
1
q
0
M
Q
k
1
C
0
V
Q
C
−
=
−
,
(8.14)
where
C
=
effluent solute concentration
C
0
=
influent solute concentration
k
1
=
rate constant
q
0
=
maximum solid-phase concentration of the solute (g
/
gorlb
/
lb)
M
=
mass of the resin
V
=
throughput volume
Q
=
flowrate.
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