Deportment of cobalt bismuth nanoferrites in Kevlar‐supported cellulose acetatemembranes for heavy metal‐salts rejection profile

Abstract

The designed novel hybrid laminate membranes have been synthesized with silane surface functionalized Kevlar fabric packed between two layers of cobalt bismuth nanoferrites (CBF)-loaded cellulose acetate. Primarily, nanoreinforcement; Co-Bi nano-ferrites were synthesized using sol-gel technique and functionalization is carried out using 3-aminpropyl-tri-methoxysilane. Secondarily, thermally assisted evaporation methodology coupled with dip-coating is adopted to synthesize hybrid Kevlar laminate membranes. Finally, structural, thermal, and flux along rejection studies are done on resultant hybrid membranes. The surface morphology, porosity generation, and homogeneous distribution of nanoincorporation with various concentration are revealed from micrographs of SEM of membranes. Noteworthy, impact of nanoreinforcement has been observed to holdup thermal oxidation of synthesized unique formulations of hybrid membranes employing TGA. Presence of CBF in cellulose acetate (CA)/Kevlar laminate membranes are modified glass transition and crystallization temperatures as cleared in DSC. De-ionized water for flux and heavy metal salts rejection capabilities of each formulated membrane were tested at applied pressures 60, 120, and 180 psi. The important findings are indicated that, increasing concentration of CBF loading in CA remarkably enhanced efficacy of metal-nitrates rejection with membranes. It is attributed to sole magneto-physiochemical behavior of nanoferrites that, facilitate enhanced adsorption in designed hybrid membranes for heavy metal rejection from industrial wastes.

Manganese spinel ferrites‐composite nanotubes impregnated thermally endured cellulose acetate membranes for superior desalination application

“…For homogeneous dispersion of well‐grinded nanofillers, they were functionalized employing APTMS adopting the same route as discussed elsewhere for 1 h 35 . Briefly, in an air‐sealed vessel containing 10‐mL acetone, APTMS and MSF composites with 1:1 have been added for ultrasonication for 1 h while maintain the temperature at 70°C.…”

“…Five different polymeric solutions were prepared by employing the same methodology as described in a previous work 35 . The ratio among all the recipients, that is, CA, PEG, DI water, and acetone were kept the same while functionalized nanofillers were added from 0 to 4 wt.% with respect to CA content.…”

“…Permeation water flux and sulphates rejecting efficiency of the formulated membranes was obtained using dead‐end filtration module. To exert three different pressures (60, 120, and 180 psi), N 2 gas was used from inlet point of the cylinder containing DI‐water/sulphate salts solution as described in Figure 4 and already detailed elsewhere 35 . The flux (L/hm 2 ) was determined by Equation ().…”

“…The particle size of these spinel adsorbents is of key importance since downing the size to nanoscale opens up more reactive sites resulting in enhanced adsorption. Along with aforementioned characteristics, peerless physiochemical properties, notable tolerance to cope with chemicals, tuneable morphology, and higher sorption capability announce these superparamagnetic nano‐spinel‐ferrites ideally fit for purification technologies 35 …”

Structural, dielectric, and thermal properties of Zn and Cr doped Mg- Co spinel nanoferrites

“…Spinel nanoferrites have a ceramic material structure consisting of iron oxide and other metallic elements [2]. Spinel nanoferrites have a significant variety of usages, including switching and high-frequency devices [11], removal of organic industrial contaminants [16], hyperthermia treatments [17], high-performance energystorage equipment [10], drug delivery for cancer treatment [18], and waste-water management [19]. The spinel structure ferrites also have been used in lithium-ion batteries [20] in antimicrobial [21,22], and microwave applications [23,24].…”