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Guo H, Gao H, Yan A, Lu X, Wu C, Gao L, Zhang J. Treatment to surfactant containing wastewater with membrane distillation membrane with novel sandwich structure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 867:161195. [PMID: 36581298 DOI: 10.1016/j.scitotenv.2022.161195] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/13/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Surfactant containing wastewater widely exists in textile industry, which hardly to be treated by membrane technology due to its high in salinity and wetting potential. In this study, PVDF membrane was modified by constructing a PDMS-SiO2-PDMS "sandwich" structure on top of its surface via coating to achieve resistance to surfactant induced wetting. The "sandwich" layer was optimized based on the membrane performance during membrane distillation. Compared to the pristine PVDF membrane with contact angle of 92°, the water contact angle of the membrane with a "sandwich" layer of 0.44 μm increased to 153°. For the feed contained 0.5 wt% NaCl and 0.25 wt% surfactant, there was no membrane wetting occurred during the experiment period using the membrane with a "sandwich" structure, in comparison to the pristine PVDF membrane being wetted from beginning. For a challenge experiment to the developed membrane lasting for 100 h using a surfactant containing feed, there is no wetting sign observed and the stable flux is 20 kg·m-2·h-1.
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Affiliation(s)
- Hanyu Guo
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300387, PR China
| | - Haifu Gao
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300387, PR China
| | - An Yan
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300387, PR China
| | - Xiaolong Lu
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300387, PR China
| | - Chunrui Wu
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300387, PR China.
| | - Li Gao
- ISILC, Victoria University, PO Box 14428, Melbourne, Victoria 8001, Australia; South East Water Corporation, PO Box 2268, Seaford, Victoria 3198, Australia
| | - Jianhua Zhang
- ISILC, Victoria University, PO Box 14428, Melbourne, Victoria 8001, Australia.
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2
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Liu X, Lei Y, Zhu X, Liu G, Wang C, Chang S, Zhang X, Hu J. Electrostatic deposition of TiO 2 nanoparticles on porous wood veneer for improved membrane filtration performance and antifouling properties. ENVIRONMENTAL RESEARCH 2023; 220:115170. [PMID: 36592813 DOI: 10.1016/j.envres.2022.115170] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/17/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
Wood has been a promising water purifier material on account of its abundant natural transport channels, easy processing, and renewability, which is mainly focused on its utilization in growth direction for effective separation.Wood veneer manufacured from raw wood block has a reversed-tree pore structure, and possesses advantages of low cost, easy fabrication, material saving, and abundant sources. To realize its functionalization and practicable application for membrane separation, modification of wood veneer is prerequisite. Herein, thin wood veneer with disparate utilization direction of wood was developed to design filter membrane loading TiO2 nanoparticles for treatment of dye wastewater. Wood veneer with reversed-tree transport pathways exhibits unique porous structure, and filtering direction and wood growth direction is almost orthogonal generated numerous sinuous channels. Thereout, sufficient area for loading TiO2 nanoparticles and contacting pollutants as well as appropriate water transport pathways at significantly shrinking thickness of wood (the thickness of 0.2 mm) can be provide by these sinuous channels. TiO2 nanoparticles was first modified by (3-Aminopropyl)triethoxysilane with high positive charge, and immobilized on negatively charged wood surface through atmospheric impregnation via strong electrostatic attractive interaction. Vast quantities of exposed TiO2 nanoparticles on wood cell lumens significantly enhance the adsorption ability for dye contaminants, resulting in a high membrane separation performance. The flux of TiO2/wood veneer membrane can achieve high level of 636.94 L/(m2h) with considerable methylene blue removal of 99.9% at 0.01 MPa. Meanwhile, it shows good cycling stability as well as decent flexibility and excellent mechanical strength. Moreover, the designed membrane with photocatalytic function of TiO2 also displays impressive decontaminated and recycling ability. The flux can recover its pre-recession level after 10 h light irradiation. The designed TiO2/wood veneer with simple preparation process and excellent water treatment capacity exhibits promising results for practical wastewater treatment.
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Affiliation(s)
- Xing Liu
- Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Eb Greentech Solid Waste Treatment (Huangshi) Ltd, Huangshi, 435000, China
| | - Yuzhang Lei
- Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Xiu Zhu
- Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Gonggang Liu
- Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.
| | - Chongqing Wang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, China.
| | - Shanshan Chang
- Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.
| | - Xiang Zhang
- Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Jinbo Hu
- Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
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3
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Jiao L, Meng L, Yan K, Wang J, Li G, Yao Z, Sun Z, Zhang L. Micromechanism Underlying Wetting Behavior of the Vacuum Membrane Distillation during Desalination. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c05035] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lei Jiao
- Ocean College, Zhejiang University, Zhoushan 316021, PR China
| | - Lida Meng
- Ocean College, Zhejiang University, Zhoushan 316021, PR China
| | - Kangkang Yan
- Ocean College, Zhejiang University, Zhoushan 316021, PR China
| | - Jing Wang
- Engineering Research Center of Membrane and Water Treatment of MOE, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou 310027, PR China
- Research Institute of Ningbo, Zhejiang University, Ningbo 315100, PR China
| | - Ge Li
- Engineering Research Center of Membrane and Water Treatment of MOE, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou 310027, PR China
- Research Institute of Ningbo, Zhejiang University, Ningbo 315100, PR China
| | - Zhikan Yao
- Engineering Research Center of Membrane and Water Treatment of MOE, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou 310027, PR China
- Research Institute of Ningbo, Zhejiang University, Ningbo 315100, PR China
| | - Zhilin Sun
- Ocean College, Zhejiang University, Zhoushan 316021, PR China
| | - Lin Zhang
- Engineering Research Center of Membrane and Water Treatment of MOE, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou 310027, PR China
- Research Institute of Ningbo, Zhejiang University, Ningbo 315100, PR China
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4
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Yue D, Wang Y, Zhang H, Sun D, Li B, Ye X, Fang W, Liu M. A novel silver / activated - polyvinylidene fluoride - polydimethyl siloxane hydrophilic-hydrophobic Janus membrane for vacuum membrane distillation and its anti-oil-fouling ability. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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5
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Janus membranes for membrane distillation: Recent advances and challenges. Adv Colloid Interface Sci 2021; 289:102362. [PMID: 33607551 DOI: 10.1016/j.cis.2021.102362] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 02/06/2023]
Abstract
Membrane distillation (MD) is a promising hybrid thermal-membrane separation technology that can efficiently produce freshwater from seawater or contaminated wastewater. However, the relatively low flux and the presence of fouling or wetting agents in feed solution negate the applicability of MD for long term operation. In recent years, 'two-faced' membranes or Janus membranes have shown promising potential to decrease wetting and fouling problem of common MD system as well as enhance the flux performance. In this review, a comprehensive study was performed to investigate the various fabrication, modification, and novel design processes to prepare Janus membranes and discuss their performance in desalination and wastewater treatment utilizing MD. The promising potential, challenges and future prospects relating to the design and use of Janus membranes for MD are also tackled in this review.
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Dong Y, Dai X, Zhao L, Gao L, Xie Z, Zhang J. Review of Transport Phenomena and Popular Modelling Approaches in Membrane Distillation. MEMBRANES 2021; 11:membranes11020122. [PMID: 33567617 PMCID: PMC7915881 DOI: 10.3390/membranes11020122] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/02/2021] [Accepted: 02/04/2021] [Indexed: 11/16/2022]
Abstract
In this paper, the transport phenomena in four common membrane distillation (MD) configurations and three popular modelling approaches are introduced. The mechanism of heat transfer on the feed side of all configurations are the same but are distinctive from each other from the membrane interface to the bulk permeate in each configuration. Based on the features of MD configurations, the mechanisms of mass and heat transfers for four configurations are reviewed together from the bulk feed to the membrane interface on the permeate but reviewed separately from the interface to the bulk permeate. Since the temperature polarisation coefficient cannot be used to quantify the driving force polarisation in Sweeping Gas MD and Vacuum MD, the rate of driving force polarisation is proposed in this paper. The three popular modelling approaches introduced are modelling by conventional methods, computational fluid dynamics (CFD) and response surface methodology (RSM), which are based on classic transport mechanism, computer science and mathematical statistics, respectively. The default assumptions, area for applications, advantages and disadvantages of those modelling approaches are summarised. Assessment and comparison were also conducted based on the review. Since there are only a couple of full-scale plants operating worldwide, the modelling of operational cost of MD was only briefly reviewed. Gaps and future studies were also proposed based on the current research trends, such as the emergence of new membranes, which possess the characteristics of selectivity, anti-wetting, multilayer and incorporation of inorganic particles.
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Affiliation(s)
- Yan Dong
- Department of Oil Engineering, Shengli College China University of Petroleum, Dongying 257061, China; (Y.D.); (X.D.)
| | - Xiaodong Dai
- Department of Oil Engineering, Shengli College China University of Petroleum, Dongying 257061, China; (Y.D.); (X.D.)
| | - Lianyu Zhao
- YunFu (Foshan) R&D Center of Hydrogen Energy Standardization, Yunfu 527326, China;
| | - Li Gao
- South East Water Corporation, P.O. Box 2268, Seaford, VIC 3198, Australia;
| | - Zongli Xie
- CSIRO Manufacturing, Private Bag 10, Clayton South MDC, VIC 3169, Australia;
| | - Jianhua Zhang
- Institute for Sustainable Industries & Liveable Cities, Victoria University, Melbourne, VIC 8001, Australia
- Correspondence:
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7
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Chang H, Liu B, Zhang Z, Pawar R, Yan Z, Crittenden JC, Vidic RD. A Critical Review of Membrane Wettability in Membrane Distillation from the Perspective of Interfacial Interactions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:1395-1418. [PMID: 33314911 DOI: 10.1021/acs.est.0c05454] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Hydrophobic membranes used in membrane distillation (MD) systems are often subject to wetting during long-term operation. Thus, it is of great importance to fully understand factors that influence the wettability of hydrophobic membranes and their impact on the overall separation efficiency that can be achieved in MD systems. This Critical Review summarizes both fundamental and applied aspects of membrane wetting with particular emphasis on interfacial interaction between the membrane and solutes in the feed solution. First, the theoretical background of surface wetting, including the relationship between wettability and interfacial interaction, definition and measurement of contact angle, surface tension, surface free energy, adhesion force, and liquid entry pressure, is described. Second, the nature of wettability, membrane wetting mechanisms, influence of membrane properties, feed characteristics and operating conditions on membrane wetting, and evolution of membrane wetting are reviewed in the context of an MD process. Third, specific membrane features that increase resistance to wetting (e.g., superhydrophobic, omniphobic, and Janus membranes) are discussed briefly followed by the comparison of various cleaning approaches to restore membrane hydrophobicity. Finally, challenges with the prevention of membrane wetting are summarized, and future work is proposed to improve the use of MD technology in a variety of applications.
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Affiliation(s)
- Haiqing Chang
- Key Laboratory of Deep Earth Science and Engineering (Ministry of Education), College of Architecture and Environment, Sichuan University, Chengdu 610207, China
- Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Baicang Liu
- Key Laboratory of Deep Earth Science and Engineering (Ministry of Education), College of Architecture and Environment, Sichuan University, Chengdu 610207, China
| | - Zhewei Zhang
- Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Ritesh Pawar
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Zhongsen Yan
- College of Civil Engineering, Fuzhou University, Fujian, 350116, China
| | - John C Crittenden
- Brook Byers Institute for Sustainable Systems, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Radisav D Vidic
- Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
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8
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A Mini Review on Antiwetting Studies in Membrane Distillation for Textile Wastewater Treatment. Processes (Basel) 2021. [DOI: 10.3390/pr9020243] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The textile industry is an important contributor to the growth of the global economy. However, a huge quantity of wastewater is generated as a by-product during textile manufacturing, which hinders the ongoing development of textile industry in terms of environmental sustainability. Membrane distillation (MD), which is driven by thermal-induced vapor pressure difference, is being considered as an emerging economically viable technology to treat the textile wastewater for water reuse. So far, massive efforts have been put into new membrane material developments and modifications of the membrane surface. However, membrane wetting, direct feed solution transport through membrane pores leading to the failure of separation, remains as one of the main challenges for the success and potential commercialization of this separation process as textile wastewater contains membrane wetting inducing surfactants. Herein, this review presents current progress on the MD process for textile wastewater treatment with particular focuses on the fundamentals of membrane wetting, types of membranes applied as well as the fabrication or modification of membranes for anti-wetting properties. This article aims at providing insights in membrane design to enhance the MD separation performance towards commercial application of textile wastewater treatment.
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9
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Transport Analysis of Anti-Wetting Composite Fibrous Membranes for Membrane Distillation. MEMBRANES 2020; 11:membranes11010014. [PMID: 33374163 PMCID: PMC7823856 DOI: 10.3390/membranes11010014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/09/2020] [Accepted: 12/22/2020] [Indexed: 01/26/2023]
Abstract
Composite electrospun fibrous membranes are widely studied for the application of membrane distillation. It is an effective approach to enhance the membrane distillation performance in terms of anti-wetting surface and permeate flux by fabricating composite fibrous membranes (CFMs) with a thin skin layer on a thick supporting layer. In this work, various membranes prepared with different pore sizes and porosities by polyacrylonitrile and polyvinylpyrrolidone were prepared. The membrane characteristics and membrane distillation performance were tested. The mass transfer across the membranes was analyzed experimentally and theoretically in detail. It is shown that the skin layer significantly increases liquid entry pressure of the CFM by 5 times. All the membranes have a similar permeate flux. The permeate flux of membranes is stable at 19.2 ± 1.2 kg/m2/h, and the salt rejection ratios remain above 99.98% at 78 ± 1 °C for 11 h. The pore size and porosity of membranes have an insignificant effect on the temperature distribution of membrane. The porosity and pore size of the skin layer have an insignificant effect on the mass transfer process of the CFM. The mass transfer process of the CFM is governed by the supporting layer.
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10
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Li S, Wang D, Xiao H, Zhang H, Cao S, Chen L, Ni Y, Huang L. Ultra-low pressure cellulose-based nanofiltration membrane fabricated on layer-by-layer assembly for efficient sodium chloride removal. Carbohydr Polym 2020; 255:117352. [PMID: 33436192 DOI: 10.1016/j.carbpol.2020.117352] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/21/2020] [Accepted: 10/29/2020] [Indexed: 10/23/2022]
Abstract
Cellulose is a renewable, biodegradable, biocompatible, and sustainable material. A bamboo cellulose-based nanofiltration membrane (LBL-NF-CS/BCM) was prepared with a combination of layer-by-layer assembly and spraying methods. The chemical structure, morphology, and surface charge of the resultant LBL-NF-CS/BCM composite membranes were characterized based on Thermo Gravimetric Analysis (TGA), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM), and X-ray Photoelectron Spectroscopy Scanning (XPS). The nanofiltration performance of the LBL-NF-CS/BCM composite membranes was evaluated using 500 ppm NaCl solutions under 0.3 MPa pressure. It was found that the LBL-NF-CS/BCM composite membranes had a rejection rate of about 36.11 % against a 500 ppm NaCl solution under the conditions tested, and membrane flux of about 12.08 L/(m2 h) was reached. The combined layer-by-layer assembly and spraying provides a scalable and convenient process concept for nanofiltration membrane fabrication.
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Affiliation(s)
- Shi Li
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, 510650, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Dong Wang
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - He Xiao
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Hui Zhang
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Shilin Cao
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Lihui Chen
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Yonghao Ni
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Department of Chemical Engineering and Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada.
| | - Liulian Huang
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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11
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Tang M, Hou D, Ding C, Wang K, Wang D, Wang J. Anti-oil-fouling hydrophobic-superoleophobic composite membranes for robust membrane distillation performance. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 696:133883. [PMID: 31446287 DOI: 10.1016/j.scitotenv.2019.133883] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 07/25/2019] [Accepted: 08/10/2019] [Indexed: 06/10/2023]
Abstract
As a promising thermally driven separation process, membrane distillation (MD) is capable of treating challenging wastewaters. However, the traditional hydrophobic membranes are vulnerable to fouling by non-polar contaminants owing to the strong hydrophobic-hydrophobic interactions. To address this problem, we developed novel anti-oil-fouling MD membranes in this study. The composite membranes with asymmetric wettability were fabricated through electrospinning polyacrylonitrile (PAN) fibrous coating on a hydrophobic polytetrafluoroethylene (PTFE) membrane, followed by hydrolyzing the PAN coating with ethylenediamine (EDA) and NaOH, respectively. These two composite membranes exhibited excellent underwater superoleophobicity, with the underwater oil contact angle >150°, which can be attributed to the fibrous and re-entrant surface structure and the optimized surface hydrophilicity of the electrospun coating. During MD process using saline and oily emulsion as feed, the composite membranes presented robust anti-oil-fouling performance, indicating by stable permeate flux and salt rejection. A novel oil-droplet adhesion force probe was introduced to quasi-quantitatively elucidate oil-membrane interaction and evaluate membrane fouling propensity, the force spectroscopy indicated that the fabricated composite membranes had fairly less attractive to crude oil compared with the PTFE membrane. Our research results suggest that the novel composite membranes with asymmetric wettability were competent to serve as an anti-oil-fouling MD membrane for desalinating challenging saline and oily wastewaters.
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Affiliation(s)
- Min Tang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Deyin Hou
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100190, China.
| | - Chunli Ding
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Kunpeng Wang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Dewu Wang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Jun Wang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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12
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Recent advances in membrane development for treating surfactant- and oil-containing feed streams via membrane distillation. Adv Colloid Interface Sci 2019; 273:102022. [PMID: 31494337 DOI: 10.1016/j.cis.2019.102022] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/18/2019] [Accepted: 08/27/2019] [Indexed: 11/22/2022]
Abstract
Membrane distillation (MD) has been touted as a promising technology for niche applications such as desalination of surfactant- and oil-containing feed streams. Hitherto, the deployment of conventional hydrophobic MD membranes for such applications is limited and unsatisfactory. This is because the presence of surfactants and oils in aqueous feed streams reduces the surface-tension of these media significantly and the attachment of these contaminants onto hydrophobic membrane surfaces often leads to membrane fouling and pore wetting, which compromises on the quantity and quality of water recovered. Endowing MD membranes with surfaces of special wettabilities has been proposed as a strategy to combat membrane fouling and pore wetting. This involves the design of local kinetic energy barriers such as multilevel re-entrant surface structures, surfaces with ultralow surface-energies, and interfacial hydration layers to impede transition to the fully-wetted Wenzel state. This review critiques the state-of-the-art fabrication and surface-modification methods as well as practices used in the development of omniphobic and Janus MD membranes with specific emphasis on the advances, challenges, and future improvements for application in challenging surfactant- and oil-containing feed streams.
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