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

Chemosphere. 2022 Feb:289:133144. doi: 10.1016/j.chemosphere.2021.133144. Epub 2021 Dec 1.

Authors

Ravi P Pandey¹, Parashuram Kallem², P Abdul Rasheed³, Khaled A Mahmoud⁴, Fawzi Banat¹, Woei Jye Lau⁵, Shadi W Hasan⁶

Affiliations

¹ Center for Membranes and Advanced Water Technology (CMAT), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
² Center for Membranes and Advanced Water Technology (CMAT), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
³ Department of Biomedical Engineering, Bannari Amman Institute of Technology, Sathyamangalam, 638401, Tamilnadu, India; Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), Qatar Foundation, P.O. Box 34110, Doha, Qatar.
⁴ Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), Qatar Foundation, P.O. Box 34110, Doha, Qatar.
⁵ Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia.
⁶ Center for Membranes and Advanced Water Technology (CMAT), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates. Electronic address: shadi.hasan@ku.ac.ae.

PMID: 34863730
DOI: 10.1016/j.chemosphere.2021.133144

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.

MeSH terms

Cellulose / analogs & derivatives
Escherichia coli*
Hydrophobic and Hydrophilic Interactions
Membranes, Artificial*
Organosilicon Compounds

Substances

Membranes, Artificial
Organosilicon Compounds
polysilsesquioxane
acetylcellulose
Cellulose