Idiosyncratic cellulose acetate nanocomposite membranes: synthesis and performance control study for desalination

Afzal, Amina; Rafique, Muhammad; Iqbal, Sadia Sagar; Butt, Shariqa Hassan; Kalsoom, Umber

doi:10.1080/09593330.2019.1668862

Cited by 9 publications

(26 citation statements)

References 53 publications

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“…VTES (CH 2 = CH-Si[OC 2 H 5 ] 3 ) was used to functionalize CBF nanoferrites adopting the methodology as discussed elsewhere 10 : VTES and nano CBF with 1:1 have been added in an air tight glass vessel containing 10 ml acetone. Ultrasonication of the aforementioned solution was carried out at 70 C. After 3 h, the glass vessel was floored to acquire room temperature.…”

Section: Functionalization Of Nanofillers (Cbf)mentioning

confidence: 99%

“…where Q represents permeate volume, t is the permeation time, and A is effective area of the membrane. 10…”

Section: Permeate Fluxmentioning

confidence: 99%

“…thought as a free/open resource. [9][10][11] Urbanization, rapid population growth, and industrialization are significantly causing, on one side, groundwater depletion due to higher requirement of fresh-water and on the other side the contamination of fresh-water resources such as rivers and lakes. 12,13 Recycling of tainted water to retrieve fresh-water is one of the solutions to address this problem.…”

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confidence: 99%

“…Modified/hybrid CA membranes have revolutionized the desalination procedures. 10 Spinel nanoferrites are well recognized example in this regard. [22][23][24] Since adsorption is one of the admired characteristics feature of MFe2O4 nanoferrites, where M can be any transition metal with 2 as their oxidation state.…”

mentioning

confidence: 99%

“…Since CA is well known for its biocompatible nature. 10,20 But along with all well-known characteristics features CA membranes their mechanical strength is a question. To address this issue and utilize the aforementioned membranes at higher applied pressures Kevlar fabric support have been added.…”

mentioning

confidence: 99%

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

Afzal

Rafique

Iqbal

2022

J of Applied Polymer Sci

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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.

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Section: Functionalization Of Nanofillers (Cbf)mentioning

confidence: 99%

“…where Q represents permeate volume, t is the permeation time, and A is effective area of the membrane. 10…”

Section: Permeate Fluxmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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

Afzal

Rafique

Iqbal

2022

J of Applied Polymer Sci

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

Afzal

Shahid

Rafique³

et al. 2023

Asia-Pacific J Chem Eng

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Manganese nanoferrites are decorated over single‐wall carbon nanotubes using in situ co‐precipitation technique to incorporate into cellulose acetate (CA) polymer in order to prepare nanocomposite membranes for salt rejection and desalination purpose. The microstructural study reveals the pore size of the synthesized membranes from 5 nm to 0.20 μm depending upon the loading concentration of the impregnated nanocomposite tubes. Fourier transform infrared (FTIR) and X‐ray diffraction (XRD) patterns of the synthesized membranes delineate the presence of decorated nanotubes in the host polymer matrix. Thermal degradation study proclaims the thermal endurance enhancement with increasing nanotubes concentration in the polymer matrix. Flux rate of the deionized (DI) water through the prepared membranes decreases with increasing nano‐filler concentration while this impact is observed inverse in salt rejection study of the aluminum sulphate (Al2(SO4)3) and zinc sulphate (ZnSO4) solutions due to the transformation of microporosity to nanoporosity with increasing composite tubes dosing into the host CA polymer.

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Transport properties investigations of nanocomposite membranes incorporating titanate nanowires for water desalination

Resende

Ohland

Salim

et al. 2023

J of Applied Polymer Sci

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Improvement of membrane properties is an important issue to enhance the efficiency of water permeation processes. Nanocomposite membranes are gaining prominence in this field due to the particular properties of these materials. In the present study, incorporating titanate nanowires (TNW) into the cellulose acetate (CA) matrix allowed getting a nanocomposite membrane with modified characteristics. Morphologic and physical–chemical properties of the synthesized membranes were characterized by Fourier transform infrared spectrometry and scanning electron microscopy analysis, presenting a dense, uniform membrane formation with a highly dispersed inorganic phase when low amounts of particles were added. The membranes were tested by measuring water flux and salt rejection. The results showed that the incorporation of inorganic nanostructures into polymer membranes affects their transport properties. It was observed an increase of three times in water flux, reaching from 1.33 to 4.0 L/h m2, with NaCl rejection over 65%. Membranes with such characteristics could be specially designed for nanofiltration or forward osmosis processes as a promising application for water desalination or energy generation.

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Idiosyncratic cellulose acetate nanocomposite membranes: synthesis and performance control study for desalination

Cited by 9 publications

References 53 publications

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

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

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

Transport properties investigations of nanocomposite membranes incorporating titanate nanowires for water desalination

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