1
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Choi Y, Nam C. Fabrication of PVDF Membranes with a PVA Layer for the Effective Removal of Volatile Organic Compounds in Semiconductor Wastewater. Polymers (Basel) 2025; 17:1332. [PMID: 40430628 PMCID: PMC12114977 DOI: 10.3390/polym17101332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2025] [Revised: 05/11/2025] [Accepted: 05/13/2025] [Indexed: 05/29/2025] Open
Abstract
Through the application of advanced membrane modification strategies, high-performance membranes have been developed to effectively remove organic contaminants such as toluene and xylene from wastewater. These membranes demonstrate superior antifouling resistance and long-term operational stability, offering a competitive advantage for semiconductor wastewater treatment. This study introduces a novel approach to membrane fabrication using polyvinylidene fluoride (PVDF), recognized for its cost-effectiveness and distinct antifouling properties in contaminant removal. To enhance the performance of the membrane, the solvent (DMA, DMF, NMP) that dissolves PVDF and the immersion time (30 min, 60 min, 90 min) at which phase separation occurs were identified. Additionally, the membranes were treated with polyvinyl alcohol (PVA) through multiple dip coatings to enhance their hydrophilicity before a comparative analysis was conducted. The resulting optimized membranes demonstrated high emulsion fluxes (4412 Lm-2h-1bar-1 for toluene) and achieved oil-removal efficiencies exceeding 90% when tested with various organic solvents, including toluene, cyclohexane, xylene, benzene, and chloroform. The resulting optimized membranes prove to be a reliable means of producing clean water and of efficiently separating organic contaminants from wastewater. Showcasing remarkable antifouling capabilities and suitability for repeated use without significant efficiency loss, this solution effectively addresses cost and fouling challenges, presenting it as a sustainable and efficient wastewater treatment method for the semiconductor industry.
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Affiliation(s)
| | - Changwoo Nam
- Carbon Composites Convergence Materials Engineering, Jeonbuk National University, Jeonju 54896, Jeollabuk-do, Republic of Korea
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2
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Liu L, Ren C, Zhang W, Fan M, Zhang J. Comparative Study on the Adsorption Characteristics of Anionic, Cationic, and Non-Ionic Dyes by PVDF-PVA/GO Composite Membrane. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH 2025; 19:4. [DOI: 10.1007/s41742-024-00664-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 07/15/2024] [Accepted: 09/29/2024] [Indexed: 01/05/2025]
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3
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Liu L, Yang D, Bai Y, Li X, Tan F, Ma J, Wang Y. Construction of biodegradable superhydrophilic/underwater superoleophobic materials with CNF (cellulose nanofiber) fence-like attached on the surface for efficient oil/water emulsion separation. Int J Biol Macromol 2024; 269:132175. [PMID: 38729497 DOI: 10.1016/j.ijbiomac.2024.132175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 04/26/2024] [Accepted: 05/05/2024] [Indexed: 05/12/2024]
Abstract
Superhydrophilic/underwater superoleophobic materials for the separation of oil-water emulsions by filtration have received much attention in order to solve the pollution problem of oil-water emulsion. In this paper, a fence-like structure on the surface of CNF/KGM (Konjac Glucomannan) materials by a simple method using CNF instead of metal nanowires was successfully developed based on the hydrogen bonding of KGM and CNF. The resulted organic CNF/KGM materials surface has outstanding superhydrophilic (WCA = 0°) in air and superoleophobicity (OCA≥151°) in water, which could separate oil-water mixtures with high separation efficiency above 99.14 % under the pressure of the emulsion itself. The material shows good mechanical properties because of the addition of CNF and has outstanding anti-fouling property and reusability. More importantly, the material can be completely biodegraded after buried in soil for 4 weeks since both of KGM and CNF are organic substances. Therefore, it may have a broad application prospect in the separation of oil-water emulsion because of its outstanding separation properties, simply preparation method and biodegradability.
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Affiliation(s)
- Lei Liu
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Di Yang
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Yue Bai
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Xin Li
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Fengzhi Tan
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jiliang Ma
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Yuanhao Wang
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
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4
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Nelson K, Mecha AC, Kumar A. Characterization of novel solar based nitrogen doped titanium dioxide photocatalytic membrane for wastewater treatment. Heliyon 2024; 10:e29806. [PMID: 38681563 PMCID: PMC11046203 DOI: 10.1016/j.heliyon.2024.e29806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 03/16/2024] [Accepted: 04/15/2024] [Indexed: 05/01/2024] Open
Abstract
The increasing presence of microbial and emerging organic contaminants pose detrimental effects on the environment and ecosystem such as diseases, pandemics and toxicity. Most of these synthetic pollutants are biorecalcitrant and therefore persist in the environment. Conventional water treatment methods are not effective thereby necessitating the development of advanced techniques such as photocatalysis and membrane processes. In this study, visible light-driven photocatalytic membrane was synthesized through the immobilization of nitrogen-doped nanoparticles onto the polyvinylidene fluoride (PVDF) membrane and performance evaluated with E.coli microbial contaminant removal. Characterization was done using Fourier transform infrared spectra, X-ray diffraction (XRD), water contact angle, Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX). The Nitrogen-doping of titanium dioxide red-shifted the light absorption to a visible range of 440 nm from 400 nm. Nitrogen dopant was detected at 1420 cm-1and 1170 cm-1 for nitrogen doped nanoparticles and 1346-1417 cm-1 for nitrogen doped titanium dioxide PVDF membrane. SEM-EDX confirmed presences of nitrogen in nitrogen doped titanium dioxide nanoparticles on membrane surface with nitrogen elemental composition of 0.01 % wt. The water contact angle reduced by 81.39o from 120.14o to 38.75o because of PVA immobilization of nitrogen-doped titanium dioxide and glutaraldehyde crosslinking. Nitrogen doping resulted in visible light active photocatalytic membranes with better hydrophilicity and fouling resistance. 8.42 E.coli log removal and a relative flux of 0.35 was obtained within 75 min. The developed photocatalytic membrane enables the use of sunlight hence a less costly method for decontamination of wastewater.
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Affiliation(s)
- Kipchumba Nelson
- Renewable Energy, Nanomaterials, and Water Research Group, Department of Chemical and Process Engineering, Moi University, P.O. Box 3900, Eldoret, Kenya
| | - Achisa C. Mecha
- Renewable Energy, Nanomaterials, and Water Research Group, Department of Chemical and Process Engineering, Moi University, P.O. Box 3900, Eldoret, Kenya
- Department of Environmental Science, University of Arizona, USA
| | - Anil Kumar
- Department of Chemical and Process Engineering, Moi University, P.O. Box 3900, Eldoret, Kenya
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5
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Shen Y, Zhang Y, Jiang Y, Cheng H, Wang B, Wang H. Membrane processes enhanced by various forms of physical energy: A systematic review on mechanisms, implementation, application and energy efficiency. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167268. [PMID: 37748609 DOI: 10.1016/j.scitotenv.2023.167268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/05/2023] [Accepted: 09/20/2023] [Indexed: 09/27/2023]
Abstract
Membrane technologies in water and wastewater treatment have been eagerly pursued over the past decades, yet membrane fouling remains the major bottleneck to overcome. Membrane fouling control methods which couple membrane processes with online in situ application of external physical energy input (EPEI) are getting closer and closer to reality, thanks to recent advances in novel materials and energy deliverance methods. In this review, we summarized recent studies on membrane fouling control techniques that depend on (i) electric field, (ii) acoustic field, (iii) magnetic field, and (iv) photo-irradiation (mostly ultraviolet or visible light). Mechanisms of each energy input were first reported, which defines the applicability of these methods to certain wastewater matrices. Then, means of implementation were discussed to evaluate the compatibility of these fouling control methods with established membrane techniques. After that, preferred applications of each energy input to different foulant types and membrane processes in the experiment reports were summarized, along with a discussion on the trends and knowledge gaps of such fouling control research. Next, specific energy consumption in membrane fouling control and flux enhancement was estimated and compared, based on the experimental results reported in the literature. Lastly, strength and weakness of these methods and future perspectives were presented as open questions.
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Affiliation(s)
- Yuxiang Shen
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yichong Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yulian Jiang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Haibo Cheng
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Banglong Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Hongyu Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
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6
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Manouchehri M. A comprehensive review on state-of-the-art antifouling super(wetting and anti-wetting) membranes for oily wastewater treatment. Adv Colloid Interface Sci 2024; 323:103073. [PMID: 38160525 DOI: 10.1016/j.cis.2023.103073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 01/03/2024]
Abstract
One of the most dangerous types of pollution to the environment is oily wastewater, which is produced from a number of industrial sources and can cause damage to the environment, people, and creatures. To overcome this issue, membrane technology as an advanced method has been considered for treating oily wastewater due to its stability, high removal efficiency, and simplicity in scaling up. Membrane fouling, or the accumulation of oil droplets at or within the membrane pores, compromises the efficiency of membrane separation and water flux. In the last decade, the fabrication of membranes with specific wettability to reduce fouling has received much consideration. The purpose of this article is to offer a literature overview of all fabricated anti-fouling super(wetting and anti-wetting) membranes for applicable membrane processes for the separation of immiscible and emulsified oil/water mixtures. In this review, we first explain membrane fouling and discuss methods for preventing it. Afterwards, in all membrane separation processes, including pressure-driven, gravity-driven, and thermal-driven, membranes based on the form and density of oil are categorized as oil-removing or water-removing with special wettability, and then their wettability modification with different materials is particularly discussed. Finally, the prospect of anti-fouling membrane fabrication in the future is presented.
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Affiliation(s)
- Massoumeh Manouchehri
- Department of Chemical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran.
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7
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Ang MBMY, Hsu WL, Wang YS, Kuo HY, Tsai HA, Lee KR. Using Tannic-Acid-Based Complex to Modify Polyacrylonitrile Hollow Fiber Membrane for Efficient Oil-In-Water Separation. MEMBRANES 2023; 13:351. [PMID: 36984738 PMCID: PMC10051258 DOI: 10.3390/membranes13030351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/04/2023] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
Separating oil from water allows us to reuse both fluids for various applications, leading to a more economical process. Membrane separation has been evidenced as a cost-effective process for wastewater treatment. A hollow fiber membrane made of polyacrylonitrile (PAN) is an excellent choice for separating oil from water because of its superior chemical resistance. Its low antifouling ability, however, reduces the effectiveness of its separation. Hence, in this study, we used tannic acid (TA) and FeIII complex to modify the surface of the PAN hollow fiber membrane. To improve membrane performance, different reaction times were investigated. The results demonstrate that even when the TA-FeIII covered the pores of the PAN membrane, the water flux remained constant. However, when an emulsion was fed to the feed solution, the flux increased from 50 to 66 LMH, indicating low oil adhesion on the surface of the modified membrane. When compared to the pristine membrane, the modified membrane had superior antifouling and reusability. As a result, the hydrophilic TA-FeIII complex on PAN surface improves overall membrane performance.
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8
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Zhang R, Mo Y, Gao Y, Zhou Z, Hou X, Ren X, Wang J, Chu X, Lu Y. Constructing a Hierarchical Hydrophilic Crosslink Network on the Surface of a Polyvinylidene Fluoride Membrane for Efficient Oil/Water Emulsion Separation. MEMBRANES 2023; 13:255. [PMID: 36984642 PMCID: PMC10053406 DOI: 10.3390/membranes13030255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/02/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
Oil/water mixtures from industrial and domestic wastewater adversely affect the environment and human beings. In this context, the development of a facile and improved separation method is crucial. Herein, dopamine was used as a bioadhesive to bind tea polyphenol (TP) onto the surface of a polyvinylidene fluoride (PVDF) membrane to form the first hydrophilic polymer network. Sodium periodate (NaIO4) is considered an oxidising agent for triggering self-polymerisation and can be used to introduce hydrophilic groups via surface manipulation to form the second hydrophilic network. In contrast to the individual polydopamine (PDA) and TP/NaIO4 composite coatings for a hydrophobic PVDF microfiltration membrane, a combination of PDA, TP, and NaIO4 has achieved the most facile treatment process for transforming the hydrophobic membrane into the hydrophilic state. The hierarchical superhydrophilic network structure with a simultaneous underwater superoleophobic membrane exhibited excellent performance in separating various oil-in-water emulsions, with a high water flux (1530 L.m-2 h-1.bar) and improved rejection (98%). The water contact angle of the modified membrane was 0° in 1 s. Moreover, the steady polyphenol coating was applied onto the surface, which endowed the membrane with an adequate antifouling and recovery capability and a robust durability against immersion in an acid, alkali, or salt solution. This facile scale-up method depends on in situ plant-inspired chemistry and has remarkable potential for practical applications.
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Affiliation(s)
- Ruixian Zhang
- Guangxi Key Laboratory for Polysaccharide Materials and Modification, Guangxi Higher Education Institutes Key Laboratory for New Chemical and Biological Transformation Process Technology, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Yuanbin Mo
- Institute of Artificial Intelligence, Guangxi Minzu University, Nanning 530006, China
| | - Yanfei Gao
- Guangxi Key Laboratory for Polysaccharide Materials and Modification, Guangxi Higher Education Institutes Key Laboratory for New Chemical and Biological Transformation Process Technology, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Zeguang Zhou
- Guangxi Key Laboratory for Polysaccharide Materials and Modification, Guangxi Higher Education Institutes Key Laboratory for New Chemical and Biological Transformation Process Technology, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Xueyi Hou
- Guangxi Key Laboratory for Polysaccharide Materials and Modification, Guangxi Higher Education Institutes Key Laboratory for New Chemical and Biological Transformation Process Technology, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Xiuxiu Ren
- Guangxi Key Laboratory for Polysaccharide Materials and Modification, Guangxi Higher Education Institutes Key Laboratory for New Chemical and Biological Transformation Process Technology, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Junzhong Wang
- Guangxi Key Laboratory for Polysaccharide Materials and Modification, Guangxi Higher Education Institutes Key Laboratory for New Chemical and Biological Transformation Process Technology, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Xiaokun Chu
- Guangxi Key Laboratory for Polysaccharide Materials and Modification, Guangxi Higher Education Institutes Key Laboratory for New Chemical and Biological Transformation Process Technology, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Yanyue Lu
- Guangxi Key Laboratory for Polysaccharide Materials and Modification, Guangxi Higher Education Institutes Key Laboratory for New Chemical and Biological Transformation Process Technology, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
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9
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Fan K, Zhou GQ, Gao CY, Li JH, Xu FL. Preparation of Modified Membrane Based on Covalent Grafting of Poly(N-isopropyl acrylamide) on PVDF Membrane Surface by Gamma-Ray Irradiation. HIGH ENERGY CHEMISTRY 2023. [DOI: 10.1134/s0018143923010058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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10
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Liao X, Chen X, Tang Y, Zhu M, Xie H, Xin Y, Lin Y, Fan X. Enhanced Piezocatalytic Reactive Oxygen Species Production Activity and Recyclability of the Dual Piezoelectric Cu 3B 2O 6/PVDF Composite Membrane. ACS APPLIED MATERIALS & INTERFACES 2023; 15:1286-1295. [PMID: 36578151 DOI: 10.1021/acsami.2c19083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Piezocatalysts have attracted considerable attention due to their ability to convert natural mechanical energy into chemical energy. However, the inefficient chemical reactions of the free charges and the poor mechanical endurance of the powder piezoelectric materials have largely restricted their wide application. Here, by combining piezocatalyst Cu3B2O6 (CBO) and polyvinylidene fluoride (PVDF), a composite membrane CBO/PVDF with superior stability and excellent piezo-performance is prepared for the first time. This composite membrane shows a high efficiency for the degradation of antibiotics and organic dyes under ultrasonication; particularly, the removal efficiency is 33.9 times higher than that of a pure PVDF membrane for amoxicillin degradation, and it maintains a high efficiency after 16 cycling tests. The polarization electric field in the dual piezoelectric composite membrane significantly enhances the redox reaction of the intrinsic free carrier with dissolved oxygen and water molecules to generate reactive oxygen species. The results provide a strategy for combining the borate with the polymer membrane to lead piezocatalysis to real future applications.
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Affiliation(s)
- Xiaomin Liao
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou510632, China
| | - Xueqin Chen
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou510632, China
| | - Yi Tang
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou510632, China
| | - Mude Zhu
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou510632, China
| | - Huiyuan Xie
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou510632, China
| | - Yue Xin
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou510632, China
| | - Yingheng Lin
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou510632, China
| | - Xiaoyun Fan
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou510632, China
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11
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Hemin-Modified Multi-Walled Carbon Nanotube-Incorporated PVDF Membranes: Computational and Experimental Studies on Oil-Water Emulsion Separations. Molecules 2023; 28:molecules28010391. [PMID: 36615584 PMCID: PMC9824685 DOI: 10.3390/molecules28010391] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/24/2022] [Accepted: 12/27/2022] [Indexed: 01/04/2023] Open
Abstract
The separation of oil/water emulsions has attracted considerable attention for decades due to the negative environmental impacts brought by wastewater. Among the various membranes investigated for separation, polyvinylidene fluoride (PVDF) membranes have shown significant advantages of ease of fabrication, high selectivity, and fair pore distribution. However, PVDF membranes are hydrophobic and suffer from severe fouling resulting in substantial flux decline. Meanwhile, the incorporation of wettable substrates during fabrication has significantly impacted the membrane performance by lowering the fouling propensity. Herein, we report the fabrication of an iron-containing porphyrin (hemin)-modified multi-walled carbon nanotube incorporated PVDF membrane (HA-MWCNT) to enhance fouling resistance and the effective separation of oil-in-water emulsions. The fabricated membrane was thoroughly investigated using the FTIR, SEM, EDX, AFM, and contact angle (CA) analysis. The HA-MWCNT membrane exhibited a water CA of 62° ± 0.5 and excellent pure water permeance of 300.5 L/m2h at 3.0 bar (400% increment), in contrast to the pristine PVDF, which recorded a CA of 82° ± 0.8 and water permeance of 59.9 L/m2h. The hydrophilic HA-MWCNT membrane further showed an excellent oil rejection of >99% in the transmembrane pressure range of 0.5−2.5 bar and a superb flux recovery ratio (FRR) of 82%. Meanwhile, the classical molecular dynamics (MD) simulations revealed that the HA-MWCNT membrane had greater solvent-accessible pores, which enhanced water permeance while blocking the hydrocarbons. The incorporation of the hemin-modified MWCNT is thus an excellent strategy and could be adopted in the design of advanced membranes for oil/water separation.
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Zhang Y, Tan L, Han N, Tian S, Li W, Wang W, Wu Y, Sun Z, Zhang X. Janus ZIF-8/P(AN-MA) hybrid microfiltration membrane with selected wettability for highly efficient separation of water/oil emulsions. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Zhang J, Qu W, Li X, Wang Z. Surface engineering of filter membranes with hydrogels for oil-in-water emulsion separation. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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14
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Xu L, Wang C, Shuai Q, Li H, Zhang H, Zuo D. Effect of spraying polyvinyl alcohol solution on the surface of liquid film on the structure and antifouling properties of polyvinylidene membrane. JOURNAL OF POLYMER ENGINEERING 2022. [DOI: 10.1515/polyeng-2022-0198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Abstract
Polyvinylidene fluoride (PVDF) membrane was prepared by a two-step method of surface gelation-immersion precipitation. The surface of the scraping solution film was sprayed with polyvinyl alcohol (PVA) aqueous solution to gel the film surface first, and then the liquid film was immersed in a coagulation bath for phase transformation to obtain the surface modified PVDF membrane. The effects of PVA solution with different mass fraction on the structure and properties of PVDF membrane were studied. The results showed that with the increase of spraying PVA mass fraction, the contact angle of the upper surface of PVDF membranes gradually decreased, the porosity and mean pore size of PVDF membranes gradually increased, and the crystallinity of PVDF membranes gradually decreased. The pores on upper surface of the membranes first increased and then decreased, and the finger-like macropore structure appeared inside the membranes, the water flux first increased and then decreased, and the rejection rate increased. Dynamic cycle filtration experiment of bovine serum protein (BSA) solution showed an increase in membrane flux recovery from 68.31 to 95.08% and a decrease in the irreversible fouling rate from 31.69 to 4.92%, indicating an improvement in the hydrophilicity and antifouling properties of the modified PVDF membrane.
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Affiliation(s)
- Lang Xu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies , Wuhan Textile University , Wuhan 430020 , P. R. China
| | - Chenyang Wang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies , Wuhan Textile University , Wuhan 430020 , P. R. China
| | - Qi Shuai
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies , Wuhan Textile University , Wuhan 430020 , P. R. China
| | - Hongjun Li
- Hubei Provincial Engineering Research Center of Industrial Detonator Intelligent Assembly , Wuhan Textile University , Wuhan 430073 , P. R. China
| | - Hongwei Zhang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies , Wuhan Textile University , Wuhan 430020 , P. R. China
- Hubei Provincial Engineering Research Center of Industrial Detonator Intelligent Assembly , Wuhan Textile University , Wuhan 430073 , P. R. China
| | - Danying Zuo
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies , Wuhan Textile University , Wuhan 430020 , P. R. China
- Hubei Provincial Engineering Research Center of Industrial Detonator Intelligent Assembly , Wuhan Textile University , Wuhan 430073 , P. R. China
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15
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Baig N, Alowaid AM, Abdulazeez I, Salhi B, Sajid M, Kammakakam I. Designing of nanotextured inorganic-organic hybrid PVDF membrane for efficient separation of the oil-in-water emulsions. CHEMOSPHERE 2022; 308:136531. [PMID: 36150483 DOI: 10.1016/j.chemosphere.2022.136531] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/01/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
The separation of the emulsified oil/water is one of the critical environmental challenges. The PVDF membranes have been found helpful for separation, but rapid fouling makes them less attractive in treating oil-in-water emulsions. The design of antifouling membranes has become an area of deep interest. Herein, developing a novel modified PVDF ultrafiltration membrane was reported by doping the pyrrole and solidifying it in a ferric-containing coagulation bath, resulting in a unique nanotextured PVDF membrane (CCB-Fe/PPnp-PVDF) to separate the oil/water emulsions. The resultant CCB-Fe/PPnp-PVDF membrane was thoroughly characterized using the FTIR, FE-SEM, EDX, mapping, AFM, and contact analyzer. The hydrophilicity of the CCB-Fe/PPnp-PVDF was substantially improved, and the water contact angle was reduced from 81֯ ± 0.9֯ to 44֯ ± 1.7֯. The CCB-Fe/PPnp-PVDF membrane flux increased by 121% compared to the pristine PVDF membrane, with high separation efficiency of 99%. The hydrophilic nanotextured surface of the CCB-Fe/PPnp-PVDF membrane showed good antifouling behavior, with a flux recovery ratio (FRR) of more than 96%. Irreversible flux was just less than 4%. The high flux recovery ratio indicated that the nanotextured surface produced by the Fe/PPnp had prevented the blockage of the membrane pores and compact cake layer formation, which makes it an excellent membrane for oil/water emulsion separation. This strategy can be adopted for designing advanced membranes for separation applications.
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Affiliation(s)
- Nadeem Baig
- Interdisciplinary Research Center for Membranes and Water Security, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia.
| | - Abdulaziz Mohammed Alowaid
- Chemical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Ismail Abdulazeez
- Interdisciplinary Research Center for Membranes and Water Security, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Billel Salhi
- Interdisciplinary Research Center for Membranes and Water Security, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Muhammad Sajid
- Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Irshad Kammakakam
- Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
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16
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He Y, Zhang E, Feng X, Chen L, Jiang Z. Facile optimization of grafted chain length on antifouling properties based on hyperbranched polyglycerol. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Yang J, Lin L, Wang Q, Ma W, Li X, Liu Z, Yang X, Xu M, Cheng Q, Zhao K, Zhao J. Engineering a superwetting membrane with spider-web structured carboxymethyl cellulose gel layer for efficient oil-water separation based on biomimetic concept. Int J Biol Macromol 2022; 222:2603-2614. [DOI: 10.1016/j.ijbiomac.2022.10.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 09/22/2022] [Accepted: 10/06/2022] [Indexed: 11/05/2022]
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18
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Surface modification of PVDF membrane via deposition-grafting of UiO-66-NH2 and their application in oily water separations. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Akamatsu K, Shida T, Ochiai A, Fukase R, Ohashi H, Nakao SI, Wang XL. Low-Fouling Polyvinylidene Fluoride Microfiltration Membranes Produced by Grafting Carboxybetaine Polymers by Atom Transfer Radical Polymerization and Activator Generated by Electron Transfer–Atom Transfer Radical Polymerization. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kazuki Akamatsu
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi 192-0015, Tokyo, Japan
| | - Taisei Shida
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi 192-0015, Tokyo, Japan
| | - Ayaka Ochiai
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi 192-0015, Tokyo, Japan
| | - Ryo Fukase
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi 192-0015, Tokyo, Japan
| | - Hidenori Ohashi
- Department of Chemical Engineering, Faculty of Engineering, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei 184-8588, Tokyo, Japan
| | - Shin-ichi Nakao
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi 192-0015, Tokyo, Japan
| | - Xiao-lin Wang
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi 192-0015, Tokyo, Japan
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, People’s Republic of China
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20
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Chen H, Yang J, Su J, Cui Y. Facile fabrication of biobased porous material via the photocuring technique and a template-assisted approach for oil/water separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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21
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Janus nanofibrous membrane with special micro-nanostructure for highly efficient separation of oil–water emulsion. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121532] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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22
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Usha ZR, Babiker DM, Yu R, Yang J, Che W, Chen X, Li L. Super hydrophilic modified biaxially oriented polypropylene microporous membrane for excellent gravity-driven oil/water emulsion separation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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23
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A realistic approach for determining the pore size distribution of nanofiltration membranes. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121096] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Construction of superhydrophilic and underwater superoleophobic corn stalk/konjac glucomannan aerogel for high-efficiency oil/water emulsion separation. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-022-1133-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Shi Y, Zheng Q, Ding L, Yang F, Jin W, Tang CY, Dong Y. Electro-Enhanced Separation of Microsized Oil-in-Water Emulsions via Metallic Membranes: Performance and Mechanistic Insights. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:4518-4530. [PMID: 35258928 DOI: 10.1021/acs.est.2c00336] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Conventional separation membranes suffer from evitable fouling and flux decrease for water treatment applications. Herein, a novel protocol of electro-enhanced membrane separation is proposed for the efficient treatment of microsized emulsions (∼1 μm) by rationally designing robust electroresponsive copper metallic membranes, which could mitigate oil fouling and coenhance permeance (from ∼1026 to ∼2516 L·m-2·h-1·bar-1) and rejection (from ∼87 to ∼98%). High-flux Cu membranes exhibit superior ductility and electrical conductivity, enabling promising electroactivity. Separation performance and the fouling mechanism were studied under different electrical potentials and ionic strengths. Application of negative polarization into a large-pore (∼2.1 μm) Cu membrane is favorable to not only almost completely reject smaller-sized oil droplets (∼1 μm) but also achieve antifouling and anticorrosion functions. Moreover, surfactants around oil droplets might be redistributed due to electrostatic repulsion, which effectively enhances the steric hindrance effect between neighboring oil droplets, mitigating oil coalescence and consequently membrane fouling. Furthermore, due to the screening effect of surfactants, the presence of low-concentration salts increases the adsorption of surfactants at the oil-water interface, thus preventing oil coalescence via decreasing oil-water interfacial tension. However, under high ionic strengths, the fouling mechanism converts from cake filtration to a complete blocking model due to the reduced electrostatic repulsion between the Cu membrane and oil droplets. This work would provide mechanistic insights into electro-enhanced antifouling for not only oil emulsion separation but also more water treatment applications using rationally designed novel electroresponsive membranes.
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Affiliation(s)
- Yongxuan Shi
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Qifeng Zheng
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Liujie Ding
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Fenglin Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Wenbiao Jin
- School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen 518055, China
| | - Chuyang Y Tang
- Department of Civil Engineering, The University of Hong Kong, Pokfulam 999077, Hong Kong, China
| | - Yingchao Dong
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
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26
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Fabrication of Polyamide-6 Membranes—The Effect of Gelation Time towards Their Morphological, Physical, and Transport Properties. MEMBRANES 2022; 12:membranes12030315. [PMID: 35323791 PMCID: PMC8949474 DOI: 10.3390/membranes12030315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/22/2022] [Accepted: 03/07/2022] [Indexed: 12/04/2022]
Abstract
Porous polyamide-6 membranes were fabricated via a non-solvent induced phase inversion method, and the influence of gelation time on the properties of the membranes was investigated. Membrane samples with various gelation times were prepared. The evaluation of the membranes’ properties was carried out by various analyses and tests, such as scanning electron microscopy, atomic force microscopy, contact angle, wet and dry thickness, mean pore size measurements, porosity, water uptake, mechanical resistance, hydrodynamic water fluxes, membrane hydrodynamic permeability, and retention testing. The scanning electron microscopy images (both surface and cross-section) demonstrated that the increase in gelation time from 0 (M0) to 10 (M10) min led to the morphological change of membranes from isotropic (M0) to anisotropic (M10). The wet and dry thickness of the membranes showed a downward tendency with increasing gelation time. The M0 membrane exhibited the lowest bubble contact angle of 60 ± 4° and the lowest average surface roughness of 124 ± 22 nm. The highest values of mean pore size and porosity were observed for the M0 sample (0.710 ± 0.06 µm and 72 ± 2%, respectively), whereas the M10 membrane demonstrated the highest tensile strength of 4.1 MPa. The membrane water uptake was diminished from 62 to 39% by increasing the gelation time from 0 to 10 min. The M0 membrane also showed the highest hydrodynamic water flux among the prepared membranes, equal to 28.6 L m−2 h−1 (at Δp = 2 bar).
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27
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Shi W, Li T, Li H, Du Q, Zhang H, Qin X. Continuous biodiesel production from acidic oil using a combination of the acid-, alkali-catalyzed membrane and GO/PVDF separation membrane. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2021.11.057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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28
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Baudino L, Pedico A, Bianco S, Periolatto M, Pirri CF, Lamberti A. Crown-Ether Functionalized Graphene Oxide Membrane for Lithium Recovery from Water. MEMBRANES 2022; 12:233. [PMID: 35207154 PMCID: PMC8878177 DOI: 10.3390/membranes12020233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 02/08/2022] [Accepted: 02/16/2022] [Indexed: 12/14/2022]
Abstract
The massive worldwide transition of the transport sector to electric vehicles has dramatically increased the demand for lithium. Lithium recovery by means of ion sieves or supramolecular chemistry has been extensively studied in recent years as a viable alternative approach to the most common extraction processes. Graphene oxide (GO) has also already been proven to be an excellent candidate for water treatment and other membrane related applications. Herein, a nanocomposite 12-crown-4-ether functionalized GO membrane for lithium recovery by means of pressure filtration is proposed. GO flakes were via carbodiimide esterification, then a polymeric binder was added to improve the mechanical properties. The membrane was then obtained and tested on a polymeric support in a dead-end pressure setup under nitrogen gas to speed up the lithium recovery. Morphological and physico-chemical characterizations were carried out using pristine GO and functionalized GO membranes for comparison with the nanocomposite. The lithium selectivity was proven by both the conductance and ICP mass measurements on different sets of feed and stripping solutions filtrated (LiCl/HCl and other chloride salts/HCl). The membrane proposed showed promising properties in low concentrated solutions (7 mgLi/L) with an average lithium uptake of 5 mgLi/g in under half an hour of filtration time.
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Affiliation(s)
- Luisa Baudino
- Politecnico di Torino, Dipartimento di Scienza Applicata e Tecnologia (DISAT), Corso Duca Degli Abruzzi, 24, 10129 Torino, Italy; (A.P.); (S.B.); (M.P.); (C.F.P.); (A.L.)
- Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies, Via Livorno 60, 10144 Torino, Italy
| | - Alessandro Pedico
- Politecnico di Torino, Dipartimento di Scienza Applicata e Tecnologia (DISAT), Corso Duca Degli Abruzzi, 24, 10129 Torino, Italy; (A.P.); (S.B.); (M.P.); (C.F.P.); (A.L.)
| | - Stefano Bianco
- Politecnico di Torino, Dipartimento di Scienza Applicata e Tecnologia (DISAT), Corso Duca Degli Abruzzi, 24, 10129 Torino, Italy; (A.P.); (S.B.); (M.P.); (C.F.P.); (A.L.)
| | - Monica Periolatto
- Politecnico di Torino, Dipartimento di Scienza Applicata e Tecnologia (DISAT), Corso Duca Degli Abruzzi, 24, 10129 Torino, Italy; (A.P.); (S.B.); (M.P.); (C.F.P.); (A.L.)
| | - Candido Fabrizio Pirri
- Politecnico di Torino, Dipartimento di Scienza Applicata e Tecnologia (DISAT), Corso Duca Degli Abruzzi, 24, 10129 Torino, Italy; (A.P.); (S.B.); (M.P.); (C.F.P.); (A.L.)
- Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies, Via Livorno 60, 10144 Torino, Italy
| | - Andrea Lamberti
- Politecnico di Torino, Dipartimento di Scienza Applicata e Tecnologia (DISAT), Corso Duca Degli Abruzzi, 24, 10129 Torino, Italy; (A.P.); (S.B.); (M.P.); (C.F.P.); (A.L.)
- Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies, Via Livorno 60, 10144 Torino, Italy
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29
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Oil/water separation membranes with stable ultra-high flux based on the self-assembly of heterogeneous carbon nanotubes. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120148] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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30
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Zainol Abidin MN, Nasef MM, Matsuura T. Fouling Prevention in Polymeric Membranes by Radiation Induced Graft Copolymerization. Polymers (Basel) 2022; 14:197. [PMID: 35012218 PMCID: PMC8747411 DOI: 10.3390/polym14010197] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 01/20/2023] Open
Abstract
The application of membrane processes in various fields has now undergone accelerated developments, despite the presence of some hurdles impacting the process efficiency. Fouling is arguably the main hindrance for a wider implementation of polymeric membranes, particularly in pressure-driven membrane processes, causing higher costs of energy, operation, and maintenance. Radiation induced graft copolymerization (RIGC) is a powerful versatile technique for covalently imparting selected chemical functionalities to membranes' surfaces, providing a potential solution to fouling problems. This article aims to systematically review the progress in modifications of polymeric membranes by RIGC of polar monomers onto membranes using various low- and high-energy radiation sources (UV, plasma, γ-rays, and electron beam) for fouling prevention. The feasibility of the modification method with respect to physico-chemical and antifouling properties of the membrane is discussed. Furthermore, the major challenges to the modified membranes in terms of sustainability are outlined and the future research directions are also highlighted. It is expected that this review would attract the attention of membrane developers, users, researchers, and scientists to appreciate the merits of using RIGC for modifying polymeric membranes to mitigate the fouling issue, increase membrane lifespan, and enhance the membrane system efficiency.
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Affiliation(s)
- Muhammad Nidzhom Zainol Abidin
- Chemical and Environmental Engineering Department, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Malaysia;
| | - Mohamed Mahmoud Nasef
- Chemical and Environmental Engineering Department, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Malaysia;
- Center of Hydrogen Energy, Institute of Future Energy, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Malaysia
| | - Takeshi Matsuura
- Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, ON K1N 6N5, Canada;
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31
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Gao J, Ma S, Xu M, Yuan M, Li J, Xue J, Wang M. Photo-Fenton superwettable NiFe 2O 4/TA/PVDF composite membrane for organic pollutant degradation with successively oil-in-water separation. CHEMOSPHERE 2022; 286:131705. [PMID: 34333185 DOI: 10.1016/j.chemosphere.2021.131705] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/09/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
With regard to the treatment of multicomponent wastewaters, to construct multifunctional super-wetting membranes is highly attractive in current decade. In this work, a low-cost and novel NiFe2O4/TA/PVDF composite membrane was fabricated via a facile in-situ deposition method under vacuum system. In which, photo-response NiFe2O4 nanoparticles were immobilized on the surface of flexible PVDF base membrane via hydrophilic tannic acid (TA) as the binder. The resulting composite membrane exhibited a special superwettability of superamphilicity in air and underwater superoleophobicity with a nanoscale rough surface structure. One the one hand, NiFe2O4/TA/PVDF membrane can be used a reusable catalyst in Photo-Fenton degradation of organic dyes with high efficiency. On the other hand, the composite membrane can effectively separate emulsified oils from representative oil-in-water emulsions with excellent separation efficiency all above 99 % and relatively high flux (880-1525 Lm-2h-1 bar-1). More importantly, NiFe2O4/TA/PVDF composite membrane showed satisfactory processing efficiency, anti-fouling property and excellent reusability in deal with the mixed organic pollutants (water-insoluble emulsified oils and water-soluble organic dyes) existed in one aqueous system, which followed the procedure of initially photo-Fenton degradation of organic dyes emulsion and successively separation the remaining emulsion over the recovered membrane. This successful development of high-performance NiFe2O4/TA/PVDF composite membrane will provide a new candidate for both oil/water separation and organic wastewater treatment, as well as promote the utilization of spinel ferrites in the construction of multifunctional membrane for environmental purification.
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Affiliation(s)
- Jiamin Gao
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, PR China
| | - Shuaishuai Ma
- College of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou, 213001, PR China
| | - Minjing Xu
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, PR China
| | - Meng Yuan
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, PR China
| | - Jin Li
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, PR China
| | - Jinjuan Xue
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, PR China.
| | - Mingxin Wang
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, PR China.
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32
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Mahdavi H, Amin Kerachian M, Abazari M. Synergistic effect of GO@SiO2 and GO@ZnO nano-hybrid particles with PVDF-g-PMMA copolymer in high-flux ultrafiltration membrane for oily wastewater treatment and antifouling properties. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.01.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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33
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Ma D, Zou X, Zhao Z, Zhou J, Li S, Yin H, Wang J. Hydrophilic PAA-g-MWCNT/TiO2@PES nano-matrix composite membranes: anti-fouling, antibacterial and photocatalytic. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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34
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Cross-Linking Combined with Surfactant Bilayer Assembly Enhances the Hydrophilic and Antifouling Properties of PTFE Microfiltration Membranes. SEPARATIONS 2021. [DOI: 10.3390/separations9010002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The inherent strong hydrophobicity of Polytetrafluoroetylene (PTFE) microfiltration membranes results in low separation efficiency and easy contamination. In order to enhance its hydrophilic and antifouling properties, we first modified the PTFE microfiltration membrane by using Polyethylene glycol laurate (PEGML) for first layer deposition and then used Polyvinyl alcohol (PVA)/citric acid (CA) cross-linked coatings for second layer deposition. The Scanning Electron Microscope (SEM) results showed that the fibers and nodes of the modified PTFE microfiltration membrane were coated with PVA/CA hydrophilic coating. FT-IR Spectromete and X-ray photoelectron spectrometer (XPS) analysis results confirmed that crosslinking of PVA and CA occurred and that PEGML and PVA/CA were successfully deposited onto the membrane surface. The modification conditions were optimized by hydrophilicity testing, and the best hydrophilicity of the modified membrane was achieved when the crosslinking content of PEGML was 2 g·L−1, PVA was 5 g·L−1, and CA was 2 g·L−1. PTFE microfiltration membranes modified by the optimal conditions achieved a water flux of 396.9 L·m−2·h−1 (three times that of the original membrane) at low operating pressures (0.05 MPa), and the contact angle decreased from 120° to 40°. Meanwhile, the modified PTFE microfiltration membrane has improved contamination resistance and good stability of the hydrophilic coating.
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35
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Zhao Y, Ji X, Wu L, Tian J, Zhang C. Preparation of demulsifying functional membrane and its application in separation of emulsified oil. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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36
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Robust PVA-GO-TiO2 composite membrane for efficient separation oil-in-water emulsions with stable high flux. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119836] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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37
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Multifunctional porphyrinic Zr-MOF composite membrane for high-performance oil-in-water separation and organic dye adsorption/photocatalysis. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127288] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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38
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Guo Y, Liu C, Xu W, Liu G, Xiao K, Zhao HZ. Interpenetrating network nanoarchitectonics of antifouling poly(vinylidene fluoride) membranes for oil-water separation. RSC Adv 2021; 11:31865-31876. [PMID: 35495518 PMCID: PMC9041979 DOI: 10.1039/d1ra05970j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/17/2021] [Indexed: 11/28/2022] Open
Abstract
Poly(vinylidene fluoride) (PVDF) membranes are a commonly used cheap material and have been widely used in wastewater treatment. In this study, a simple strategy was proposed to construct PVDF-g-PEG membranes with an interpenetrating network structure by simulating plant roots for the treatment of oil/water emulsion. Meanwhile, the hydrophilicity, antifouling, and mechanical properties of the membrane were improved. A series of chemical and physical characterization methods were used to verify the successful formation of a PVDF-g-PEG layer on the membrane surface. The effects of graft modifier content on the crystallization behavior, microstructure, and membrane permeability were studied. When the optimized membrane (m-PVDF-2) was applied to the treatment of oily wastewater, its separation performance was significantly better than that of the blank PVDF membrane, and the oil removal rate was over 99.3%. BSA and oil contamination were nearly reversible, and excellent oil resistance to high-viscosity oil was also observed. The method reported in this article is a one-step, simple method for constructing hydrophilic and oil-resistant PVDF membranes without any intermediate additives and harmful or costly catalysts. They can be used as an ideal material for preparing efficient oil–water separation membranes. A simple strategy was proposed to construct PVDF-g-PEG membranes with an interpenetrating network structure.![]()
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Affiliation(s)
- Yongqiang Guo
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University Shenzhen 518060 PR China .,Jiangsu Hengrui Medicine Co.,Ltd Lianyungang 222000 PR China
| | - Chao Liu
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University Shenzhen 518060 PR China .,The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University Beijing 100871 PR China
| | - Wei Xu
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University Beijing 100871 PR China
| | - Guangli Liu
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University Beijing 100871 PR China
| | - Ke Xiao
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University Shenzhen 518060 PR China
| | - Hua-Zhang Zhao
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University Beijing 100871 PR China
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39
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Guan C, Li Z, Zhu L, Xia D. A superhydrophilic and high demulsification aramid nanofibers membrane with novel poly-pseudorotaxane structure for oil-in-water separation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118715] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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40
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Yin X, He Y, Li H, Ma X, Zhou L, He T, Li S. One-step in-situ fabrication of carbon nanotube/stainless steel mesh membrane with excellent anti-fouling properties for effective gravity-driven filtration of oil-in-water emulsions. J Colloid Interface Sci 2021; 592:87-94. [PMID: 33647565 DOI: 10.1016/j.jcis.2021.02.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 11/18/2022]
Abstract
The occurrence of membrane fouling has resulted in limited wastewater treatment applications. The development of superhydrophilic-underwater superoleophobic materials has received significant attention owing to their good anti-fouling properties. However, to fabricate such materials need costly regents and tedious steps. Thus, developing a one-step process to prepare a low-cost material for oil/water separation is still desired. In this study, bio-inspired from an arachnid, inorganic carbon nanotube stainless steel meshes (CNT@SSMs) having superhydrophilic-underwater superoleophobic and excellent anti-fouling properties and a unique fiber structure were fabricated via a one-step thermal chemical vapor deposition method. The CNT@SSMs had a small pore size enabling a high water flux of 10,639 L m-2h-1 and the separation of oily wastewater, including various emulsions, at a high rejection ratio of >98.89%. As a result of its excellent chemical stability under high temperatures, a broad pH range, and saline environments, the CNT@SSM has the potential to be used in extreme conditions. In summary, these CNT@SSMs are easy to fabricate and are low-cost as a result of inexpensive reagents involved. Moreover, these novel superwetting membranes are promising candidates for treatment of hazardous oily wastewater.
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Affiliation(s)
- Xiangying Yin
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Yi He
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China.
| | - Hongjie Li
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Xiaoyu Ma
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Liang Zhou
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Teng He
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Shuangshuang Li
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
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Lin Y, Zhang Y, Zhang F, Zhang M, Li D, Deng G, Guan L, Dong M. Studies on the electrostatic effects of stretched PVDF films and nanofibers. NANOSCALE RESEARCH LETTERS 2021; 16:79. [PMID: 33939029 PMCID: PMC8093351 DOI: 10.1186/s11671-021-03536-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/20/2021] [Indexed: 05/09/2023]
Abstract
The electroactive β-phase in Poly (vinylidene fluoride, PVDF) is the most desirable conformation due to its highest pyro- and piezoelectric properties, which make it feasible to be used as flexible sensors, wearable electronics, and energy harvesters etc. In this study, we successfully developed a method to obtain high-content β-phase PVDF films and nanofiber meshes by mechanical stretching and electric spinning. The phase transition process and pyro- and piezoelectric effects of stretched films and nanofiber meshes were characterized by monitoring the polarized light microscopy (PLM) images, outputting currents and open-circuit voltages respectively, which were proved to be closely related to stretching ratio (λ) and concentrations. This study could expand a new route for the easy fabrication and wide application of PVDF films or fibers in wearable electronics, sensors, and energy harvesting devices.
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Affiliation(s)
- Yixuan Lin
- Department of Chemistry, Renmin University of China, Beijing, 100872 People’s Republic of China
| | - Yuqiong Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872 People’s Republic of China
| | - Fan Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872 People’s Republic of China
| | - Meining Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872 People’s Republic of China
| | - Dalong Li
- School of Marine Science and Technology, Harbin Institute of Technology At Weihai, Weihai, 264209 Shandong People’s Republic of China
- Sino-Danish Center for Education and Research (SDC), Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark
| | - Gaofeng Deng
- State Key Laboratory of Building Safety and Environment, China Academy of Building Research, Beijing, 100013 People’s Republic of China
| | - Li Guan
- Department of Chemistry, Renmin University of China, Beijing, 100872 People’s Republic of China
| | - Mingdong Dong
- Sino-Danish Center for Education and Research (SDC), Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark
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