Enhanced PVDF/ZIF-8 membrane with embellished microcrystals for wastewater treatment and antibacterial applications

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-05-01 DOI:10.1016/j.jwpe.2025.107822

Mangkorepla Changkija, Debarun Dhar Purkayastha

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引用次数: 0

Abstract

Membrane-based materials with distinct wetting properties are essential for separating oils from water. However, a significant number of these materials are prone to fouling from organic and biological contaminants. In this work, we introduce a novel and efficient approach to produce a nanofibrous polyvinylidene fluoride (PVDF) membrane embellished with zeolite imidazolate framework-8 (ZIF-8) microcrystals to facilitate the segregation of emulsions and oil-water mixtures. The PVDF/ZIF-8 membrane demonstrated remarkable superhydrophilic-underwater superoleophobic characteristics, leading to its effective resistance against oil fouling. Simultaneously, it displayed outstanding performance in segregating a range of oil-water mixtures and emulsions, achieving a separation efficiency of approximately 99 % and a notable water flux of up to 1309 Lm^-2 h^-1. The integration of ZIF-8 microcrystals improved the membrane’s mechanical durability, making it more resistant to fracture while ensuring stability in highly acidic, basic, hot, and cold conditions. The presence of numerous micro-structures on the membrane’s surface endowed it with commendable photocatalytic properties and antibacterial activity. Hence, the high-performance and multifunctional nature of PVDF/ZIF-8 membrane make it a promising candidate for efficient separation of oily wastewater treatment.

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带有修饰微晶的增强型PVDF/ZIF-8膜用于废水处理和抗菌应用

具有独特润湿特性的膜基材料对于分离油和水是必不可少的。然而，相当数量的这些材料容易受到有机和生物污染物的污染。在这项工作中，我们介绍了一种新的和有效的方法来生产纳米纤维聚偏氟乙烯（PVDF）膜点缀咪唑酸分子筛框架-8 （ZIF-8）微晶体，以促进乳液和油水混合物的分离。PVDF/ZIF-8膜具有显著的超亲水-水下超疏油特性，具有良好的抗油污性能。同时，它在分离一系列油水混合物和乳液方面表现出出色的性能，分离效率约为99%，水通量高达1309 Lm-2 h-1。ZIF-8微晶体的集成提高了膜的机械耐久性，使其更耐破裂，同时确保在高酸性、碱性、高温和寒冷条件下的稳定性。膜表面大量微结构的存在使其具有良好的光催化性能和抗菌活性。因此，PVDF/ZIF-8膜的高性能和多功能特性使其成为含油废水高效分离处理的理想选择。

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies