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Else_AIEC-INGLE_cH004.qxd 7/1/2006 6:53 PM Page 317
4.2 Design of Adsorption and Ion-Exchange Processes 317

1 1
ln 1 X i 1 Fr I B
2
+
Fr 1 Fr 1 (4.167)
Fr
Fr 1 ( I A B ) I (4.168)
3
Fr 1
0.808 0.192 Fr (4.169)
1
I ∑
A n n Fr (4.170)
n 1 Fr 1
1
I ∑
B nn (4.171)
n 1 Fr 1 1

where
ka  Z 
su  t 

(1 1/ )  u  (4.172)
b
ka su Z
X (4.173)
11/ u
15 D
sb
ka
su 2 (4.174)
r
o
q
max
C o (4.175)
ka
fu
ka su (4.176)
3
)
a (1 (4.177)
u
r o
Here, q max is in mass of solute per unit mass of solid and C o is in mass of solute per unit
volume of fluid. For practical use, the infinite series I A and I B are shown in Figure 4.25 .
v e concentration The interface relati X i is related to the respectie bulk relati v e concen- v
tration X as follo ws:
Langmuir

La ( X ) La X ) 2
1
(
X i i (4.178)
( La La X ) i
)
1
(