Synergistic impact of Fe-Zr in novel hybrid aminoclay catalytic TFC membrane for ultrafast emerging pollutant remediation.

Autor: Mahadevaprasad KN; Centre for Nano & Material Sciences, JAIN University, Jain Global Campus, Bangalore, 562112, India., Santhosh KN; Centre for Nano & Material Sciences, JAIN University, Jain Global Campus, Bangalore, 562112, India., Kamath SV; Centre for Nano & Material Sciences, JAIN University, Jain Global Campus, Bangalore, 562112, India., Nataraj SK; Centre for Nano & Material Sciences, JAIN University, Jain Global Campus, Bangalore, 562112, India; School of Polymer Science and Engineering, Chonnam National University, 77Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea. Electronic address: sk.nataraj@jainuniversity.ac.in.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2024 Oct; Vol. 366, pp. 143480. Date of Electronic Publication: 2024 Oct 05.
DOI: 10.1016/j.chemosphere.2024.143480
Abstrakt: Finding new class of materials to overcome limitation in conventional membranes is a challenging task. Use of naturally stable and sustainable alternative materials stock is an emerging task. In this direction, a novel iron-zirconium hybrid aminoclay (FZ-AC) has emerged as a promising catalyst effectively employed to alleviate fouling concerns within the framework of a biopolymer-based thin film composite (TFC), constructed on a cellulose acetate (CA) support. Notably, FZ-AC exhibits remarkable catalytic activity in the degradation of foulants through potential free radicals generated from Fe and Zr active centres in synergy with oxidising agent. The optimised catalytic membrane (FZ-TFC-1) exhibited an ultrafast degradation of congo red (CR), eriochrome black-T (EBT), crystal violet (CV), methylene blue (MB), red-brown dye (RBn), bisphenol-A (BPA), azithromycin (AZC), and Cr(VI) within 4 min. The cooperative action of redox centres of Fe and Zr metal ions synergistically accelerated the swift production of reactive species and facilitated the efficient degradation of pollutants within a notably short timeframe. Furthermore, >95% of above dyes rejection was achieved with >67 L m -2 .h -1 of flux. The results of a long-term study demonstrated that FZ-TFC membranes exhibit exceptional stability, retaining their performance for a duration up to 150 h. This extended period of stability underscores the superiority of these membranes over alternative counterparts, suggesting their robustness and reliability for sustained operation in various applications. This strategic utilization of FZ-AC representing a promising avenue for enhancing the efficacy and longevity of nanofiltration membranes, thereby advancing the frontier of membrane-based separation technologies.
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 © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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