mass transfer in multiphase systems - Greenleaf University

MASS TRANSFER IN MULTIPHASE SYSTEMS: VOLATILE ORGANIC COMPOUND
REMOVAL IN THREE-PHASE SYSTEMS
λ
A
kaV
L L
1
s
kaV
L L
s
1
P H Pk aV H
A L L A
(26)
The solution to Eq. 25 is via separable ordinary differential equation (ODE):
dX
A
oa
ò = ò K a ( 1 - L / H
s s A A)
dt
(27)
X
A
The explicit result is:
X X e
- oa
K a ( 1 / H s s - L A A)
t
= (28)
A
A0
The results are plotted in Figure 11 g . Since the goal was to ensure each component was reduced
below 30 mg/kg, the theory predicts this to be easily accomplished as shown (see Appendix D
for the values of the constants used). Also, even though they had restricted operations without
the activated carbon, the system performed admirably and commensurate with the predictions in
Figure 11.
g Some of the constants are from memory since the laboratory retained the initial publications. However, this is a
fair representation of the results as initially planned to operate.
26