Durable Nano‐Flower Structured Foam Coupled with Electrically‐Driven in Situ Aeration Enable High‐Flux Oil/Water Emulsion Separation with Dynamic Antifouling Ability

Small, Journal Year: 2024, Volume and Issue: unknown

Published: April 26, 2024

Abstract The conventional membranes used for separating oil/water emulsions are typically limited by the properties of membrane materials and impact fouling, making continuous long‐term usage unachievable. In this study, a filtering electrode with synchronous self‐cleaning functionality is devised, exhibiting notable antifouling ability an extended operational lifespan, suitable separation emulsions. Compared original Ti foam, in situ growth NiTi‐LDH (Layered double hydroxide) nano‐flowers endows modified foam (NiTi‐LDH/TF) exceptional superhydrophilicity underwater superoleophobicity. Driven gravity, rejection rate over 99% achieved various containing oil content ranging from 1% to 50%, as well oil/seawater flux recovery exceeds 90% after one hundred cycles 4‐h filtration period. enhanced performance realized through “gas bridge” effect during aeration electrochemical anodic oxidation. internal within pores contributes removal foulants. This study underscores potential coupling metal technology, providing paradigm exploration novel membranes.

Language: Английский

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Microcapsules loaded with essential oil: Enhancing the hydrophobic and antifungal properties of wood-based panels

Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 225, P. 120471 - 120471

Published: Jan. 8, 2025

Language: Английский

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Improved Oil/Water Separation by Employing Packed-Bed Filtration of Modified Quartz Particles

Water, Journal Year: 2025, Volume and Issue: 17(9), P. 1339 - 1339

Published: April 29, 2025

This study explores the development and optimization of quartz-based filtration media for industrial oil–water separation, focusing on enhancing surface wettability, minimizing fouling, improving oil rejection efficiency. High-purity quartz particles (SiO2: 98%, Fe2O3: 0.18%, particle size: 0.8–1.8 mm) were evaluated in three configurations: raw, acid-washed, surface-coated with hydrophilic nanoparticles (Al2O3 P2O5). The medium was constructed as a packed-bed rather than continuous sintered membrane, providing cost-effective modular structure separation processes. Comprehensive material characterization performed using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS). XRD confirmed crystalline stability across all treatments, while SEM EDS revealed enhanced morphology elemental distribution—especially phosphorus aluminum—in coated samples. Performance testing synthetic oily wastewater (initial concentration: 183,754.8 mg/L) demonstrated that achieved superior reducing residual concentration to 29.3 mg/L, compared 1583.7 mg/L 1859.8 washed raw quartz, respectively. Contact angle analysis improved hydrophilicity media, which also exhibited lower fouling propensity. Taguchi (conducted via Minitab 21.3) regression modeling identified coating operational pressure (optimal at 2.5 bar) most significant parameters influencing rejection. Post-filtration structural integrity durability. Additionally, flux recovery above 90% after backwashing indicated strong regeneration capability. These findings validate surface-modified packed beds robust, scalable, economically viable alternatives conventional membranes treatment. Future research will explore multilayer coatings, long term performance under aggressive conditions, AI-based prediction models.

Language: Английский

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An Electrospun Polystyrene Fibrous Membrane with a Mechanically Reduced Pore Size Exhibits Efficient Gravity‐Driven Separation of a Water‐in‐Oil Emulsion

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Abstract Electrospun fibrous membranes are widely used for water‐oil separation. However, achieving effective separation often requires post‐processing to enhance membrane wettability or modify pore size, which can reduce productivity. In this study, a simple method is proposed size control via mechanical compression of electrospun membranes. Polystyrene (PS) (PFMs) fabricated through electrospinning and subsequently compressed using hand tool, reducing the thickness by ≈87%. The proportion pores smaller than 10 µm in diameter increase from 4.8% before maximum 45.6% after compression. While uncompressed allowes sub‐10‐µm water droplets pass through, effectively blocked them. Due oleophilic nature PS, oil permeation occurres rapidly capillary action, while retained within membrane's internal pores, facilitating continuous demulsification. By combining with compression, optimized PS (CPFM) successfully separated water‐in‐oil emulsions under gravity, flux 606 L m −2 h −1 an purity over 99.85%. This approach provides simple, cost‐effective, highly efficient emulsion

Language: Английский

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A high-efficiency oil/water emulsion separation sponge based on sodium alginate-loofah composite gels

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 141395 - 141395

Published: Feb. 1, 2025

Language: Английский

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Biomimetic materials for efficient emulsion separation: Based on the perspective of energy

Advances in Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 103486 - 103486

Published: March 1, 2025

Language: Английский

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The gradient superhydrophobic ZnO@PVDF nanofiber membrane with high-flux and anti-fouling for water-in-oil emulsion separation

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116959 - 116959

Published: May 1, 2025

Language: Английский

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Boosting solvent resistance and structure stability of degradable polyester through extended-chain crystal structure: A preliminary case of oil/water separation membrane

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 113507 - 113507

Published: July 3, 2024

Language: Английский

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Bio-Inspired Underwater Superoleophobic Aramid Nanofiber-Based Aerogel Membranes for Highly Efficient Removal of Emulsified Oils and Organic Dyes

Langmuir, Journal Year: 2024, Volume and Issue: 40(27), P. 13995 - 14006

Published: June 25, 2024

Effective elimination of insoluble emulsified oils and soluble organic dyes has received extensively attention in wastewater treatment. In this work, a chitosan polydopamine @ aramid nanofibers (CS&PDA@ANFs) aerogel membrane was fabricated through an integration methodology consisting phase inversion successive deposition PDA CS. The as-prepared possessed satisfactory three-dimensional interpenetrating network architecture with high porosity desirable mechanical property. Furthermore, due to the synergistic effect hydrophilic CS PDA, resultant exhibited good superhydrophilicity underwater superoleophobicity associated favorable oil resistance/antioil fouling properties. combination interconnected porous structures super wettability endowed membranes oil-in-water emulsion separation performance. Particularly, extremely permeation flux (3729 L/m

Language: Английский

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Use of the droplet convergence effect of under-medium superlyophilic membranes in designing a system for on-demand separations of oil-in-water and water-in-oil emulsions

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 130186 - 130186

Published: Oct. 1, 2024

Language: Английский

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