Improvement of cellulose acetate forward osmosis membrane performance using zinc oxide nanoparticles

El-Noss, Mostafa; Isawi, Heba; Shawky, Hossam A.; Gomaa, Mahmoud; Abdel‐Mottaleb, M. S. A.

doi:10.5004/dwt.2020.25677

Cited by 15 publications

(5 citation statements)

References 47 publications

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“…Similar work reported as SiO 2 /CA nanocomposite membrane has been successfully used to treat triazines (98%) from water [14]. To improve the performance of the CA forward osmosis (FO) membrane in terms of water flux (26.57 l m −2 h), and salt rejection (99.5% of Na + , 100% of Cl − , and 99.6% of Mg 2+ ) [15]. Recently, many works have reported the preparation of blended membranes using other inorganic materials such as titania, silica etc Das et al reported that increasing the content of TiO 2 NPs on the CA membranes, leads to largely interconnected fiber networks: the roughness was enhanced and the membranes degradation decreased [16].…”

Section: Introductionmentioning

confidence: 84%

“…This meaningful result suggests that the addition of the Fe 3 O 4 NPsreduced the total membrane fouling. According to the literature [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27], this effect of the Fe 3 O 4 NPs could be attributed to their highly hydrophilic properties and chemical stability due to hydroxyl groups on their surface. Consequently, a lower roughness corresponds to a lower tendency to fouling.…”

Section: Membranes' Performances 421 Pure Water Flux (Pwf) and Salt Retentionmentioning

confidence: 99%

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A preliminary study on cellulose acetate composite membranes: effect of nanoparticles types in their preparation and application

Boughdiri¹,

Ounifi²,

Chemingui³

et al. 2021

Mater. Res. Express

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This work reported a new perspective on improving the incorporation of nanoparticles(NPs) into membranes for several applications. Composite membranes were produced via the phase inversion method using cellulose acetate (CA) as the polymer, mixed with four different NPs: ZnO and Fe3O4 NPs were prepared by the co-precipitation method, while SiO2 and TiO2 NPs were commercial NPs. The impact of NPs on the membrane morphology was investigated by SEM and AFM. The composite CA membranes have been characterized by their contact angle, porosity, and water content. Membrane performance has been investigated in terms of water permeability and salt retention such as NaCl and Na2SO4. The produced CA composite membrane could be successfully applied for salt removal, particularly the CA-Fe3O4 composite membrane, which shows good water permeability (15.4 L/m2h bar) and higher salt rejection (93%).Consequently, the use of low-density hydrophilic NPs in the polymeric dope solution produces membranes with higher hydrophilicity and the ability to reduce the membrane fouling.

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Section: Introductionmentioning

confidence: 84%

Section: Membranes' Performances 421 Pure Water Flux (Pwf) and Salt Retentionmentioning

confidence: 99%

A preliminary study on cellulose acetate composite membranes: effect of nanoparticles types in their preparation and application

Boughdiri¹,

Ounifi²,

Chemingui³

et al. 2021

Mater. Res. Express

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“…Amongst different metal-derived oxides, zinc oxide (ZnO) is a promising due to its large variety of available nanostructures. They also have advantages over other catalysts since it has low cost, high surface reactivity, high and effective adsorption potential, and destructive sorbent capacity than other inorganic catalysts [ 14 , 15 , 16 , 17 ]. On the other hand, ZnO is also one of the studied metal oxides used frequently in membrane technology and membrane modifications for its capacity to inhibit the macro void formation on the membrane surface with improved mechanical strength [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Textile Dye on Blended Cellulose Acetate Membranes

et al. 2022

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This work aimed to investigate the degradation performance of natural cellulose acetate (CA) membranes filled with ZnO nanostructures. Photocatalytic degradation of reactive toxic dye methylene blue (MB) was studied as a model reaction using UV light. A CA membrane was previously casted and fabricated through the phase inversion processes and laboratory-synthesized ZnO microparticles as filler. The prepared membrane was characterized for pore size, ultrafiltration (UF) performance, porosity, morphology using scanning electron micrographs (SEM), water contact angle and catalytic degradation of MB. The prepared membrane shows a significant amount of photocatalytic oxidation under UV. The photocatalytic results under UV-light radiation in CA filled with ZnO nanoparticles (CA/ZnO) demonstrated faster and more efficient MB degradation, resulting in more than 30% of initial concentration. The results also revealed how the CA/ZnO combination effectively improves the membrane’s photocatalytic activity toward methylene blue (MB), showing that the degradation process of dye solutions to UV light is chemically and physically stable and cost-effective. This photocatalytic activity toward MB of the cellulose acetate membranes has the potential to make these membranes serious competitors for removing textile dye and other pollutants from aqueous solutions. Hence, polymer–ZnO composite membranes were considered a valuable and attractive topic in membrane technology.

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“…CA is also a widely used polymer for wastewater treatment membranes. The CA membrane usually consists of only one polymeric material and contains an asymmetric structure with a very thin and dense solute used to reject the active layer on a coarse supporting layer [ 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

“…Among metal oxides, zinc oxide (ZnO) in its nanostructured form is a favorable semiconducting oxide for application as a nanocomposite polymeric material due to its large variety of low dimensional nanostructures, effective adsorption, high surface reactivity, adsorption capacity, and destructive sorbent ion capacity [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ]. ZnO nanostructures (such as nanoparticles, nanowires, nanoflowers, and nanosheets) as multifunctional inorganic nanomaterials have been widely applied in the polymeric membrane modification process [ 24 , 25 , 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Methylene Blue Using Polymeric Membranes Based on Cellulose Acetate Impregnated with ZnO Nanostructures

2021

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This paper studied the photocatalytic degradation of methylene blue (MB) using polymeric membrane impregnated with ZnO nanostructures under UV-light and sunlight irradiation. ZnO nanoparticles and ZnO nanowires were prepared using the hydrothermal technique. Cellulose acetate polymeric membranes were fabricated by the phase inversion method using dimethylformamide (DMF) as a solvent and ZnO nanostructures. The structural properties of the nanostructures and the membranes were investigated using XRD, SEM, FTIR, and TGA measurements. The membranes were tested for photocatalytic degradation of MB using a UV lamp and a sunlight simulator. The photocatalytic results under sunlight irradiation in the presence of cellulose acetate impregnated with ZnO nanoparticles (CA-ZnO-NP) showed a more rapid degradation of MB (about 75%) compared to the results obtained under UV-light irradiation degradation (about 30%). The results show that CA-ZnO-NP possesses the photocatalytic ability to degrade MB efficiently at different levels under UV-light and sunlight irradiation. Modified membranes with ZnO nanoparticles and ZnO nanowires were found to be chemically stable, recyclable, and reproducible. The addition of ZnO nanostructure to the cellulose membranes generally enhanced their photocatalytic activity toward MB, making these potential membranes candidates for removing organic pollutants from aqueous solutions.

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Improvement of cellulose acetate forward osmosis membrane performance using zinc oxide nanoparticles

Cited by 15 publications

References 47 publications

A preliminary study on cellulose acetate composite membranes: effect of nanoparticles types in their preparation and application

A preliminary study on cellulose acetate composite membranes: effect of nanoparticles types in their preparation and application

Photocatalytic Degradation of Textile Dye on Blended Cellulose Acetate Membranes

Photocatalytic Degradation of Methylene Blue Using Polymeric Membranes Based on Cellulose Acetate Impregnated with ZnO Nanostructures

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