Enhanced water flux and bacterial resistance in cellulose acetate membranes with quaternary ammoniumpropylated polysilsesquioxane

Ravi P. Pandey; Parashuram Kallem; P. Abdul Rasheed; Khaled A. Mahmoud; Fawzi Banat; Woei Jye Lau; Shadi W. Hasan

doi:10.1016/j.chemosphere.2021.133144

Enhanced water flux and bacterial resistance in cellulose acetate membranes with quaternary ammoniumpropylated polysilsesquioxane

Ravi P. Pandey, Parashuram Kallem, P. Abdul Rasheed, Khaled A. Mahmoud, Fawzi Banat, Woei Jye Lau, Shadi W. Hasan^*

^*Corresponding author for this work

QEERI - Environment & Sustainability Center

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

An enhanced water flux and anti-fouling nanocomposite ultrafiltration membrane based on quaternary ammoniumpropylated polysilsesquioxane (QAPS)/cellulose acetate (QAPS@CA) was fabricated by in situ sol-gel processing via phase inversion followed by quaternization with methyl iodide (CH₃I). Membrane characterizations were performed based on the contact angle, FTIR, SEM, and TGA properties. Membrane separation performance was assessed in terms of pure water flux, rejection, and fouling resistance. The 7%QAPS@CA nanocomposite membrane showed an increased wettability (46.6° water contact angle), water uptake (113%) and a high pure water permeability of ∼370 L m⁻² h⁻¹ bar⁻¹. Furthermore, the 7%QAPS@CA nanocomposite membrane exhibited excellent bactericidal properties (∼97.5% growth inhibition) against Escherichia coli (E. coli) compared to the bare CA membrane (0% growth inhibition). The 7%QAPS@CA nanocomposite membrane can be recommended for water treatment and biomedical applications.

Original language	English
Article number	133144
Journal	Chemosphere
Volume	289
DOIs	https://doi.org/10.1016/j.chemosphere.2021.133144
Publication status	Published - Feb 2022

Keywords

Cellulose acetate
Mixed matrix
Nanocomposite
Polysilsesquioxane
Ultrafiltration
Water treatment

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10.1016/j.chemosphere.2021.133144

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title = "Enhanced water flux and bacterial resistance in cellulose acetate membranes with quaternary ammoniumpropylated polysilsesquioxane",

abstract = "An enhanced water flux and anti-fouling nanocomposite ultrafiltration membrane based on quaternary ammoniumpropylated polysilsesquioxane (QAPS)/cellulose acetate (QAPS@CA) was fabricated by in situ sol-gel processing via phase inversion followed by quaternization with methyl iodide (CH3I). Membrane characterizations were performed based on the contact angle, FTIR, SEM, and TGA properties. Membrane separation performance was assessed in terms of pure water flux, rejection, and fouling resistance. The 7%QAPS@CA nanocomposite membrane showed an increased wettability (46.6° water contact angle), water uptake (113%) and a high pure water permeability of ∼370 L m−2 h−1 bar−1. Furthermore, the 7%QAPS@CA nanocomposite membrane exhibited excellent bactericidal properties (∼97.5% growth inhibition) against Escherichia coli (E. coli) compared to the bare CA membrane (0% growth inhibition). The 7%QAPS@CA nanocomposite membrane can be recommended for water treatment and biomedical applications.",

keywords = "Cellulose acetate, Mixed matrix, Nanocomposite, Polysilsesquioxane, Ultrafiltration, Water treatment",

author = "Pandey, {Ravi P.} and Parashuram Kallem and Rasheed, {P. Abdul} and Mahmoud, {Khaled A.} and Fawzi Banat and Lau, {Woei Jye} and Hasan, {Shadi W.}",

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year = "2022",

month = feb,

doi = "10.1016/j.chemosphere.2021.133144",

language = "English",

volume = "289",

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AU - Pandey, Ravi P.

AU - Kallem, Parashuram

AU - Rasheed, P. Abdul

AU - Mahmoud, Khaled A.

AU - Banat, Fawzi

AU - Lau, Woei Jye

AU - Hasan, Shadi W.

PY - 2022/2

Y1 - 2022/2

N2 - An enhanced water flux and anti-fouling nanocomposite ultrafiltration membrane based on quaternary ammoniumpropylated polysilsesquioxane (QAPS)/cellulose acetate (QAPS@CA) was fabricated by in situ sol-gel processing via phase inversion followed by quaternization with methyl iodide (CH3I). Membrane characterizations were performed based on the contact angle, FTIR, SEM, and TGA properties. Membrane separation performance was assessed in terms of pure water flux, rejection, and fouling resistance. The 7%QAPS@CA nanocomposite membrane showed an increased wettability (46.6° water contact angle), water uptake (113%) and a high pure water permeability of ∼370 L m−2 h−1 bar−1. Furthermore, the 7%QAPS@CA nanocomposite membrane exhibited excellent bactericidal properties (∼97.5% growth inhibition) against Escherichia coli (E. coli) compared to the bare CA membrane (0% growth inhibition). The 7%QAPS@CA nanocomposite membrane can be recommended for water treatment and biomedical applications.

AB - An enhanced water flux and anti-fouling nanocomposite ultrafiltration membrane based on quaternary ammoniumpropylated polysilsesquioxane (QAPS)/cellulose acetate (QAPS@CA) was fabricated by in situ sol-gel processing via phase inversion followed by quaternization with methyl iodide (CH3I). Membrane characterizations were performed based on the contact angle, FTIR, SEM, and TGA properties. Membrane separation performance was assessed in terms of pure water flux, rejection, and fouling resistance. The 7%QAPS@CA nanocomposite membrane showed an increased wettability (46.6° water contact angle), water uptake (113%) and a high pure water permeability of ∼370 L m−2 h−1 bar−1. Furthermore, the 7%QAPS@CA nanocomposite membrane exhibited excellent bactericidal properties (∼97.5% growth inhibition) against Escherichia coli (E. coli) compared to the bare CA membrane (0% growth inhibition). The 7%QAPS@CA nanocomposite membrane can be recommended for water treatment and biomedical applications.

KW - Cellulose acetate

KW - Mixed matrix

KW - Nanocomposite

KW - Polysilsesquioxane

KW - Ultrafiltration

KW - Water treatment

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DO - 10.1016/j.chemosphere.2021.133144

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VL - 289

JO - Chemosphere

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ER -

Enhanced water flux and bacterial resistance in cellulose acetate membranes with quaternary ammoniumpropylated polysilsesquioxane

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