136
S. Pakdel et al.
Fig. 19 Water flux and salt rejection of TFN membranes at different CO concentrations. The figure
is adapted with permission from Elsevier [40]
Table 5 Performance of TFN membranes [40]
Nanofiller Loading (wt%)
Water permeability
(L/m 2 h psi)
NaCl rejection Reference
Zeolite
0.4% in hexane
0.0943
93.9 ± 0.3%
Jeong et al. [124]
Silica
0.6% in water
0.06
95.1%
Javad and Singh [125]
MCM-41 0.05% in hexane
0.155
97.9 ± 0.3%
Yin et al. [126]
MWNTs
0.1% in water
0.121
~ 90%
Zhao et al. [127]
GO
0.015% in hexane 0.198
93.8 ± 0.6%
This study [40]
Table 6 The composition of the prepared membranes [101]
Type of
membrane
Amount of
rGO (g)
Amount of
PAN (g)
Concentration
of rGO (% w/w)
Concentration
of PAN (%
w/w)
Contact angle
(deg)
0
0
12.0
0
100/0
52.0 ± 2.8
A
0.0135
12.0
0.11
99.89
49.5 ± 2.7
B
0.027
12.0
0.22
99.78
47.3 ± 4.1
C
0.054
12.0
0.45
99.55
48.2 ± 2.7
D
0.1
12.0
0.83
99.27
45.2 ± 2.6
E
0.5
12.0
4.0
96.0
40.7 ± 3.3
F
1.0
12.0
7.7
92.3
42.9 ± 4.3
G
2.0
12.0
14.3
85.7
45.8 ± 4.0
H
5.0
12.0
29.4
70.6
47.3 ± 4.6