Modification of PAN electrospun nanofiber membranes with g-C 3 N 4 nanotubes/carbon dots to enhance MBR performance.

Autor: Yavuzturk Gul B; National Research Center on Membrane Technologies (MEM-TEK), Istanbul Technical University, Maslak 34469, Istanbul, Turkey; Department of Environmental Engineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey., Orhun Teber O; National Research Center on Membrane Technologies (MEM-TEK), Istanbul Technical University, Maslak 34469, Istanbul, Turkey; Nano Science and Nano Engineering Department, Istanbul Technical University, Maslak, Istanbul 34469, Turkey., Tuncay G; National Research Center on Membrane Technologies (MEM-TEK), Istanbul Technical University, Maslak 34469, Istanbul, Turkey; Department of Environmental Engineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey., Pekgenc E; National Research Center on Membrane Technologies (MEM-TEK), Istanbul Technical University, Maslak 34469, Istanbul, Turkey; Department of Environmental Engineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey., Arabi N; National Research Center on Membrane Technologies (MEM-TEK), Istanbul Technical University, Maslak 34469, Istanbul, Turkey., Hemmati-Eslamlu P; Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran., Habibi-Yangjeh A; Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran., Vatanpour V; National Research Center on Membrane Technologies (MEM-TEK), Istanbul Technical University, Maslak 34469, Istanbul, Turkey; Department of Applied Chemistry, Faculty of Chemistry, Kharazmi University, 15719-14911, Tehran, Iran. Electronic address: vahidvatanpour@khu.ac.ir., Koyuncu I; National Research Center on Membrane Technologies (MEM-TEK), Istanbul Technical University, Maslak 34469, Istanbul, Turkey; Department of Environmental Engineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey. Electronic address: koyuncu@itu.edu.tr.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2024 Feb; Vol. 349, pp. 140866. Date of Electronic Publication: 2023 Dec 04.
DOI: 10.1016/j.chemosphere.2023.140866
Abstrakt: This study is dedicated to the enhancement of electrospun polyacrylonitrile (PAN) nanofiber membranes for their application in membrane bioreactor (MBR) processes. The improvement is achieved through the incorporation of graphitic carbon nitride nanotubes/carbon dots (g-C 3 N 4 NT/CDs) and subsequent heat post-treatments at varying temperatures. Notably, the hot-pressing methodology effectively mitigates surface roughness and significantly reduces issues related to peeling during nanofiber experimentation. Our results demonstrate that the introduction of 0.5 wt% of g-C 3 N 4 NT/CDs leads to a substantial enhancement in water flux. In particular, nanocomposite membranes subjected to hot-pressing at 90 °C for 10 min exhibited an impressive flux recovery ratio (FRR) of 70%. Furthermore, the heat-treated nanocomposite membranes exhibited remarkable antifouling properties and significantly reduced fouling rates when compared to their heat-treated bare counterparts. This study underscores the noteworthy potential of g-C 3 N 4 NT/CDs-modified PAN nanofiber membranes to substantially elevate MBR performance, firmly positioning them as highly promising candidates for critical applications in the domains of water and wastewater treatment. However, it is imperative to underscore that the existing written material necessitates a comprehensive overhaul to align with the provided structural framework.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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