Hexagonal Boron Nitride (h-BN) in Solutes Separation
177
the treatment of synthetic wastewater contaminated with either oil, pharmaceuticals,
or a dye. The morphology of the composite was evaluated by SEM and TEM in order
to characterize the influence of porous BNNSs on the PVDF membrane. Oil/water
emulsions with droplet size as feed were entered into a small system set-up with the
composite membrane as indicated in Fig. 10. The droplets were not observed in the
filtrate, which exhibited the high efficiency of the prepared composite membrane in
de-emulsifying. The results showed the permeance value of oil/water through the
composite membrane as high as 2 × 104 L.µm.m
−2 .h
−1 .bar
−1 with about 100%
of separation performance (Fig. 11). The composite also demonstrated excellent
recoverability as can be seen in Fig. 11.
The permeation of water solutions contaminated with an organic dye, methylene
blue (MB), and pharmaceuticals through the composite membrane was also studied.
The composite membrane demonstrated high permeability in comparison to PVDF
Fig. 10 The pressure-driven
filtration system for
separation of an oil/water
emulsion, which only water
passes through the
PVDF/BNNSs composite
membrane. The figure is
adapted with permission
from John Wiley & Sons,
Inc. [78]
177
the treatment of synthetic wastewater contaminated with either oil, pharmaceuticals,
or a dye. The morphology of the composite was evaluated by SEM and TEM in order
to characterize the influence of porous BNNSs on the PVDF membrane. Oil/water
emulsions with droplet size as feed were entered into a small system set-up with the
composite membrane as indicated in Fig. 10. The droplets were not observed in the
filtrate, which exhibited the high efficiency of the prepared composite membrane in
de-emulsifying. The results showed the permeance value of oil/water through the
composite membrane as high as 2 × 104 L.µm.m
−2 .h
−1 .bar
−1 with about 100%
of separation performance (Fig. 11). The composite also demonstrated excellent
recoverability as can be seen in Fig. 11.
The permeation of water solutions contaminated with an organic dye, methylene
blue (MB), and pharmaceuticals through the composite membrane was also studied.
The composite membrane demonstrated high permeability in comparison to PVDF
Fig. 10 The pressure-driven
filtration system for
separation of an oil/water
emulsion, which only water
passes through the
PVDF/BNNSs composite
membrane. The figure is
adapted with permission
from John Wiley & Sons,
Inc. [78]