Cellulose acetate composite membranes tailored with exfoliated tungsten disulfide nanosheets: Permeation characteristics and antifouling ability

Vetrivel, S.; Saraswathi, Meenakshi Sundaram Sri Abirami; Rana, Dipak; Divya, Kumar; Nagendran, A.

doi:10.1016/j.ijbiomac.2018.04.091

Cited by 21 publications

(12 citation statements)

References 48 publications

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“…However, the direct use of the pristine CA membrane is restricted due to its reduced water flux and ease of susceptibility to fouling by chemical and microorganisms. 4 It was well known that the incorporation of suitable additives into the CA is altering its permeation and antifouling characteristics. 5 Hvid et al demonstrated that the UF membranes with hydrophilic surfaces are less exposed to protein fouling and prompted the methods to develop the membrane with the more hydrophilic surface through appropriate modifiers as well as surface coatings.…”

Section: Introductionmentioning

confidence: 99%

“…High rejection properties and renewable sources of raw material have fashioned CA exclusively popular in the UF process. However, the direct use of the pristine CA membrane is restricted due to its reduced water flux and ease of susceptibility to fouling by chemical and microorganisms 4 . It was well known that the incorporation of suitable additives into the CA is altering its permeation and antifouling characteristics 5 .…”

Section: Introductionmentioning

confidence: 99%

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Cellulose acetate ultrafiltration membranes customized with copper oxide nanoparticles for efficient separation with antifouling behavior

Vetrivel

Saraswathi

Rana

et al. 2020

J of Applied Polymer Sci

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Cellulose acetate (CA) nanocomposite ultrafiltration membranes are fabricated with copper oxide (CuO) nanoparticles with the aim of improving efficient protein separation and antifouling performance. CuO nanoparticles are synthesized from cupric nitrate using a wet precipitation method and characterized by FTIR and XRD. CA/CuO nanocomposite membranes fabricated using 0.5, 1.0, and 1.5 wt% of CuO nanoparticles individually by simple phase inversion technique. The CA nanocomposite membrane with 0.5 wt% of hydrophilic CuO exhibited enhanced PWF of 118.6 Lm −2 h −1 due to the improvement in porosity and water uptake. This is in good agreement with the enhanced hydrophilicity of the CA/CuO nanocomposite membranes results observed in surface contact angle and morphological investigations. Further, 95.5% of BSA separation and 94.7% of flux recovery ratio (FRR) indicates its superior antifouling potential caused due to the presence of the hydration layer at the CA/CuO membrane surface. Among all the fabricated membranes, the CA-0.5 nanocomposite membrane with 0.5 wt% of CuO exhibited superiorly improved hydrophilicity, water permeation, BSA separation, and antifouling performance indicates its potential use in water and wastewater treatment applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cellulose acetate ultrafiltration membranes customized with copper oxide nanoparticles for efficient separation with antifouling behavior

Vetrivel

Saraswathi

Rana

et al. 2020

J of Applied Polymer Sci

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“…During the filtration process foulants diffused through the pores of the membranes causes internal or irreversible fouling (R irf ) . Since the foulants are strongly adhered the inner walls of the pores, it is very difficult to eliminate R irf by back washing and is evaluated by Equation .…”

Section: Methodsmentioning

confidence: 99%

Cellulose acetate nanocomposite ultrafiltration membranes tailored with hydrous manganese dioxide nanoparticles for water treatment applications

Vetrivel

Rana

Saraswathi

et al. 2019

Polymers for Advanced Techs

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Hydrous manganese dioxide (HMO) nanoparticles incorporated cellulose acetate (CA) composite ultrafiltration (UF) membranes are prepared with the aim of improving the water permeation and BSA contaminant removal. The HMO nanoparticles are synthesized from manganese ion and characterized by FT-IR, XRD, and FESEM. The effect of variation of HMO on CA membranes is probed using FT-IR, EDAX, contact angle, SEM, and AFM analysis to demonstrate their chemical functionality, hydrophilicity, and morphology. CA/HMO membranes are showing the enhancement in pure water flux (PWF), water uptake, porosity, hydrophilicity, fouling resistance, BSA rejection, and flux recovery ratio (FRR). CA-1 membrane displayed higher PWF (143.6 Lm 2 h −1 ), BSA rejection (95.9%), irreversible fouling (93.3%), and FRR (93.3%).Overall results confirmed that the CA/HMO nanocomposite UF membranes overcome the bottlenecks and shows potential for water treatment applications.

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“…In general, the CA-2,3-DA membrane maintains a high BSA rejection ratio while having a high water flux, so to some extent we have overcome the long-term challenge of the trade-off relationship between selectivity and permeability in the traditional CA separation membranes. (Dasgupta et al 2014;Jayalakshmi et al 2014;Koseoglu-Imer et al 2012;Kumar et al 2019;Lv et al 2017;Mahdavi and Shahalizade 2015;Vetrivel et al 2018Vetrivel et al , 2019Vetrivel et al , 2021…”

Section: Separation Performances Of Ultrafiltration Membranesmentioning

confidence: 99%

Novel Dopamine-Modified Cellulose Acetate Ultrafiltration Membranes with Improved Separation and Antifouling Performances

Guo

Wang

et al. 2021

Preprint

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Cellulose derivatives are the earliest and most widely used membrane materials due to its many excellent characteristics, especially chemical activity and biodegradability. However, the hydrophobic properties of cellulose acetate (CA) limited its development to some extent. To improve the inherent hydrophobic and antifouling properties of the CA membrane, CA was successfully modified with dopamine (CA-2,3-DA) through selective oxidation and Schiff base reactions in this work, which was confirmed by 1H NMR and FTIR measurements. And then, the CA-2,3-DA membrane with high water permeability and the excellent antifouling property was prepared by the phase inversion method. Compared with the primordial CA membrane, the CA-2,3-DA membrane maintained a higher rejection rate for BSA (92.5%) while greatly increasing the pure water flux (167.3 L/m2h), which could be overcome the trade-off relationship between selectivity and permeability of the traditional CA membrane to a certain extent. According to the three-cycles dynamic ultrafiltration and static protein adsorption experiments, the CA-2,3-DA membrane showed good long-term performance stability and superior antifouling performance, which was supported by the experiment results including filtration resistance, flux decline ratio and flux recovery ratio. It is expected that this approach can greatly expand the high-value utilization of modified natural organic polysaccharides in separation engineering.

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Cellulose acetate composite membranes tailored with exfoliated tungsten disulfide nanosheets: Permeation characteristics and antifouling ability

Cited by 21 publications

References 48 publications

Cellulose acetate ultrafiltration membranes customized with copper oxide nanoparticles for efficient separation with antifouling behavior

Cellulose acetate ultrafiltration membranes customized with copper oxide nanoparticles for efficient separation with antifouling behavior

Cellulose acetate nanocomposite ultrafiltration membranes tailored with hydrous manganese dioxide nanoparticles for water treatment applications

Novel Dopamine-Modified Cellulose Acetate Ultrafiltration Membranes with Improved Separation and Antifouling Performances

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