Fabrication and performance evaluation of Faujasite zeolite composite ultrafiltration membrane by separation of trivalent ions from aqueous solution

Abstract

This study deals with the separation of trivalent salts (FeCl3 and AlCl3) from aqueous solution using Faujasite (FAU) zeolite composite ultrafiltration membrane. The ceramic support was prepared by a facile uniaxial compaction method and sintered at 950°C. The FAU coating on the ceramic support was done at 75°C by hydrothermal method. The structural properties of FAU powder and the composite membrane were performed with X‐ray diffraction, zeta potential measurements, and field emission scanning electron microscope. The porosity of ceramic support and the composite membrane is found to be 47% and 33%, respectively. With the pure water permeation test, the average pore size of the FAU zeolite membrane and ceramic support is evaluated to be 0.153 and 1.0 µm, respectively. Finally, the FAU zeolite composite membrane is employed for separation assessment of trivalent salt solutions. A maximum rejection of 81% for FeCl3 and 75% for AlCl3 is obtained at an applied pressure of 276 kPa for the feed concentration of 250 ppm. © 2016 American Institute of Chemical Engineers Environ Prog, 35: 1047–1054, 2016

Nitrate removal from aqueous solutions by γ-Al 2 O 3 ultrafiltration membranes

“…The NO 3 − rejection also increased when pH increase due to electroneutrality consideration, illustrated by a rejection rate which exceeded 80% for divalent cation Mg(NO 3 ) 2 , and 50% for monovalent cation NaNO 3 . The ion separation is highly governed by the Donnan exclusion (charge effect) [ 31 , 35 ]. Eyraud et al explained this behavior by the distribution variation on the membrane surface charge as function of pH [36] .…”

Development of advanced nanocomposite membranes by molecular sieving nanomaterials (zeolite and MOF)

“…Therefore, silicalite-1 mixed membrane has great potential in large-scale seawater desalination. A study to separate trivalent salts (FeCl 3 and AlCl 3 ) from aqueous solution using Faujasite (FAU) zeolite composite ultrafiltration on ceramic support prepared by facile uniaxial support showed a maximum rejection of 81% for FeCl 3 and 75% for AlCl 3 at an applied pressure of 276 kPA for feed concentration of 250 ppm [44].…”

Nanofiltration of Aqueous Dye Solution through the Diffused Rough Pores of a Carbonaceous–Kaolinite Amalgamation Membrane

“…The limitation can be mitigated by reducing the thickness of the selective layer. Another well-known inorganic membrane is synthesized by the hydrothermal crystallization of zeolite to form a thin film on a porous ceramic support, which has been used to carry out NF through zeolite apertures for removing metal ions from water. , However, this seeding technique-based membrane system is mechanically vulnerable and difficult to be scaled up. Overall, the substantially low permeability has been the bottleneck for the real applicability of the ceramic, silica, and zeolite NF membranes.…”