Antifouling and antibacterial evaluation of ZnO/MWCNT dual nanofiller polyethersulfone mixed matrix membrane

Pang, Wen Yu; Ahmad, Abdul Latif; Zaulkiflee, Nur Dina

doi:10.1016/j.jenvman.2019.109358

Cited by 40 publications

(11 citation statements)

References 88 publications

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“…At the optimal ratio of manganese oxide and titanium dioxide in the membrane, the modified membrane delivered higher separation efficiency and better antifouling property than pristine membrane. Pang et al [ 47 ] also added two types of nanofiller in the polyethersulfone, multiwalled carbon nanotube and zinc oxide. Incorporating the multiwalled carbon nanotube improved the membrane porosity, whereas the zinc oxide enhances the antibacterial property of the membranes.…”

Section: Introductionmentioning

confidence: 99%

Modifying Cellulose Acetate Mixed-Matrix Membranes for Improved Oil–Water Separation: Comparison between Sodium and Organo-Montmorillonite as Particle Additives

et al. 2021

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In this study, cellulose acetate (CA) mixed-matrix membranes were fabricated through the wet-phase inversion method. Two types of montmorillonite (MMT) nanoclay were embedded separately: sodium montmorillonite (Na-MMT) and organo-montmorillonite (O-MMT). Na-MMT was converted to O-MMT through ion exchange reaction using cationic surfactant (dialkyldimethyl ammonium chloride, DDAC). Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) compared the chemical structure and composition of the membranes. Embedding either Na-MMT and O-MMT did not change the crystallinity of the CA membrane, indicating that the nanoclays were dispersed in the CA matrix. Furthermore, nanoclays improved the membrane hydrophilicity. Compared with CANa-MMT membrane, CAO-MMT membrane had a higher separation efficiency and antifouling property. At the optimum concentration of O-MMT in the CA matrix, the pure water flux reaches up to 524.63 ± 48.96 L∙m−2∙h−1∙bar−1 with over 95% rejection for different oil-in-water emulsion (diesel, hexane, dodecane, and food-oil). Furthermore, the modified membrane delivered an excellent antifouling property.

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Section: Introductionmentioning

confidence: 99%

Modifying Cellulose Acetate Mixed-Matrix Membranes for Improved Oil–Water Separation: Comparison between Sodium and Organo-Montmorillonite as Particle Additives

et al. 2021

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“…It can be observed that the PWF increased with an increase of the UiO‐66‐(COOH) 2 content until a maximum value (331.4 L m −2 h −1 ) at 2.0 wt%. This behavior might be explained as follows: the abundant hydrophilic groups on UiO‐66‐(COOH) 2 increased the hydrophilicity of the membrane surface, broadened the pores and increased the porosity of the membrane (Table 3), 60 resulting in an increase of the flux, i.e. the increase of surface hydrophilicity led more easily to the formation of a water layer on the membrane surface, and the water layer promoted water molecules moving across the membrane interior more quickly 44 .…”

Section: Resultsmentioning

confidence: 99%

“…As previously discussed, with an increase of UiO‐66‐(COOH) 2 content, the finger‐like pores in the middle layer expanded further. thereby promoting the passage of water molecules 60 . However, the excessive blending of UiO‐66‐(COOH) 2 (M5) had a detrimental effect on the membrane flux.…”

Section: Resultsmentioning

confidence: 99%

Preparation and performance of UiO‐66‐(COOH)₂‐based mixed matrix membranes for efficient separation of Sr²⁺ ions from aqueous solutions

Chen

Zeng

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUND: Developing new materials for separating Sr 2+ ions from aqueous solutions is significant. Metal-organic frameworks are regarded as excellent adsorption materials due to their high specific surface area and abundant adsorption sites. In this work, a novel UiO-66-(COOH) 2 -based mixed matrix membrane (MMM) was prepared by combining UiO-66-(COOH) 2 with polyethersulfone (PES) for separating Sr 2+ . RESULTS: The MMMs were characterized using scanning electron microscopy, Fourier transform infrared spectroscopy and water contact angle and water flux measurements. Various contents (0-2.5 wt%) of UiO-66-(COOH) 2 were blended into PES membranes. The results showed that incorporating UiO-66-(COOH) 2 significantly increased membrane porosity and water flux, and reduced contact angle. The membrane (M4) that contained 2.0 wt% UiO-66-(COOH) 2 exhibited an excellent morphology and the highest Sr 2+ uptake capacity (111.9 ∼g cm −2 ). Adsorption kinetics and isotherms showed that the nature of the adsorption of the membrane towards Sr 2+ was chemisorption, homogeneous and monolayer. Compared with the adsorption capacity of UiO-66-(COOH) 2 towards Sr 2+ in adsorption packed column, these values of M4 decreased by about 75% during membrane filtration. The rejection performance of MMMs increased with increasing UiO-66-(COOH) 2 content. Breakthrough curves of MMMs were not correlated with flow rate in the range of 10-180 mL h −1 . The presence of Ca 2+ and Mg 2+ ions did not obviously affect the separation of Sr 2+ , but Pb 2+ had a significant influence. Furthermore, after five adsorption-desorption experiments, the regeneration remained at about 95% of initial values. CONCLUSIONS: The MMMs showed good adsorption capacity for Sr 2+ and exhibited favorable reusability and stability.

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“…The assessment of continuous flow in a packed bed (Pang et al 2019 ) investigated the use of a TiO 2 reactor to remove microcystin from a waste stabilization lake. The photocatalytic efficacy of titanium dioxide in a complex matrix was investigated in this work (waste stabilization lake water).…”

Section: An Overview Of Photocatalyst Applications In Wastewater Trea...mentioning

confidence: 99%

The photocatalytic process in the treatment of polluted water

2022

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Wastewaters often contain toxic organic pollutants with a possible adverse effect on human health and aquatic life upon exposure. Persistent organic pollutants such as dyes and pesticides, pharmaceuticals, and other chemicals are gaining extensive attention. Water treatment utilizing photocatalysis has recently received a lot of interest. Photocatalysis is cutting-edge, alternative technology. It has various advantages, including functioning at normal temperatures and atmospheric pressure, cheap prices, no secondary waste creation, and being readily available and easily accessible. This review presented a comprehensive overview of the advances in the application of the photocatalytic process in the treatment of highly polluted industrial wastewater. The analysis of various literature revealed that TiO 2 -based photocatalysts are highly effective in degrading organic pollutants from wastewater compared to other forms of wastewater treatment technologies. The electrical structure of a semiconductor plays a vital role in the photocatalyst's mechanism. The morphology of a photocatalyst is determined by the synthesis method, chemical content, and technical characteristics. The scaled-up of the photoreactors will significantly help in curbing the effect of organic pollutants in wastewater.

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Antifouling and antibacterial evaluation of ZnO/MWCNT dual nanofiller polyethersulfone mixed matrix membrane

Cited by 40 publications

References 88 publications

Modifying Cellulose Acetate Mixed-Matrix Membranes for Improved Oil–Water Separation: Comparison between Sodium and Organo-Montmorillonite as Particle Additives

Modifying Cellulose Acetate Mixed-Matrix Membranes for Improved Oil–Water Separation: Comparison between Sodium and Organo-Montmorillonite as Particle Additives

Preparation and performance of UiO‐66‐(COOH)₂‐based mixed matrix membranes for efficient separation of Sr²⁺ ions from aqueous solutions

The photocatalytic process in the treatment of polluted water

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Antifouling and antibacterial evaluation of ZnO/MWCNT dual nanofiller polyethersulfone mixed matrix membrane

Cited by 40 publications

References 88 publications

Modifying Cellulose Acetate Mixed-Matrix Membranes for Improved Oil–Water Separation: Comparison between Sodium and Organo-Montmorillonite as Particle Additives

Modifying Cellulose Acetate Mixed-Matrix Membranes for Improved Oil–Water Separation: Comparison between Sodium and Organo-Montmorillonite as Particle Additives

Preparation and performance of UiO‐66‐(COOH)2‐based mixed matrix membranes for efficient separation of Sr2+ ions from aqueous solutions

The photocatalytic process in the treatment of polluted water

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Preparation and performance of UiO‐66‐(COOH)₂‐based mixed matrix membranes for efficient separation of Sr²⁺ ions from aqueous solutions