Chen 2013). These membranes showed much higher fluxes, higher salt rejection
rates, and good chemical resistance in desalination system than commercially
available polymeric membranes (Mahmoud et al. 2015). Hydrophilic faujasite
(FAU) and hydrophobic mordenite framework inverted (MFI) are two types of
zeolite membranes that are employed in the reverse osmosis process due to their
higher efficiency. The hydrophilic nature of FAU membrane allows it to maintain
high water flux through the membrane (Covarrubias et al. 2008).
4.8.1 Mordenite Framework Inverted-Type Zeolite
Membranes
Mordenite framework inverted (MFI) membranes are modified zeolite membranes
used for effective desalination, as they possess the nanoporous structure required to
reject ions. The membrane consists of orthorhombic nearly cylindrical crystal
symmetry architecture and ten-membered ring channels with aperture size of
approximately 0.56 nm (Zhu et al. 2013a). The ability of MFI-type zeolite membrane
Influencing Factors
Desalination
Ions
Nanoporous
membrane
Other physical
parameters
pores
by the pores
Fig. 4.11 Influencing parameters in desalination system
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