51
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Xiao Z, Zheng R, Liu Y, He H, Yuan X, Ji Y, Li D, Yin H, Zhang Y, Li XM, He T. Slippery for scaling resistance in membrane distillation: A novel porous micropillared superhydrophobic surface. WATER RESEARCH 2019; 155:152-161. [PMID: 30844676 DOI: 10.1016/j.watres.2019.01.036] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 01/08/2019] [Accepted: 01/09/2019] [Indexed: 05/26/2023]
Abstract
Scaling in membrane distillation (MD) is a key issue in desalination of concentrated saline water, where the interface property between the membrane and the feed become critical. In this paper, a slippery mechanism was explored as an innovative concept to understand the scaling behavior in membrane distillation for a soluble salt, NaCl. The investigation was based on a novel design of a superhydrophobic polyvinylidene fluoride (PVDF) membrane with micro-pillar arrays (MP-PVDF) using a micromolding phase separation (μPS) method. The membrane showed a contact angle of 166.0 ± 2.3° and the sliding angle of 15.8 ± 3.3°. After CF4 plasma treatment, the resultant membrane (CF4-MP-PVDF) showed a reduced sliding angle of 3.0°. In direct contact membrane distillation (DCMD), the CF4-MP-PVDF membrane illustrated excellent anti-scaling in concentrating saturated NaCl feed. Characterization of the used membranes showed that aggregation of NaCl crystals occurred on the control PVDF and MP-PVDF membranes, but not on the CF4-MP-PVDF membrane. To understand this phenomenon, a "slippery" theory was introduced and correlated the sliding angle to the slippery surface of CF4-MP-PVDF and its anti-scaling property. This work proposed a well-defined physical and theoretical platform for investigating scaling problems in membrane distillation and beyond.
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Affiliation(s)
- Zechun Xiao
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Rui Zheng
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongjie Liu
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China; School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Hailong He
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Xiaofei Yuan
- School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK
| | - Yunhui Ji
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, College of Engineering and Applied Sciences, Department of Materials Science & Engineering, Nanjing University, Jiangsu, 210093, China
| | - Dongdong Li
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Huabing Yin
- School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK
| | - Yuebiao Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Xue-Mei Li
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Tao He
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China; School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK.
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52
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The Influence of Talc Addition on the Performance of Polypropylene Membranes Formed by TIPS Method. MEMBRANES 2019; 9:membranes9050063. [PMID: 31091714 PMCID: PMC6572567 DOI: 10.3390/membranes9050063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 11/17/2022]
Abstract
The effect of talc addition on the morphology of capillary membranes formed by a thermally induced phase separation (TIPS) method was investigated in the presented work. The usability of such formed membranes for membrane distillation was evaluated. Two types of commercial capillary polypropylene membranes, fabricated for microfiltration process, were applied in the studies. A linear arrangement of polymer chains was obtained in the walls of membranes formed without a talc addition. In the case of membranes blended with talc, the linear structure was disordered, and a more porous structure was obtained. The changes in morphology enhanced the mechanical properties of blended membranes, and their lower thermal degradation was observed during 350 h of membrane distillation studies. Long-term studies confirmed the stability of talc dispersion in the membrane matrix. A leaching of talc from polypropylene (PP) membranes was not found during the membrane distillation (MD) process.
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53
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Reinforced superhydrophobic membrane coated with aerogel-assisted polymeric microspheres for membrane distillation. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.12.019] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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54
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Seyed Shahabadi SM, Brant JA. Bio-inspired superhydrophobic and superoleophilic nanofibrous membranes for non-aqueous solvent and oil separation from water. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.08.038] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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55
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Aruchamy K, Mahto A, Nataraj S. Electrospun nanofibers, nanocomposites and characterization of art: Insight on establishing fibers as product. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.nanoso.2018.03.013] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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56
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Jiang G, Luo L, Tan L, Wang J, Zhang S, Zhang F, Jin J. Microsphere-Fiber Interpenetrated Superhydrophobic PVDF Microporous Membranes with Improved Waterproof and Breathable Performance. ACS APPLIED MATERIALS & INTERFACES 2018; 10:28210-28218. [PMID: 30053370 DOI: 10.1021/acsami.8b08191] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Superhydrophobic membranes with extreme liquid water repellency property are good candidates for waterproof and breathable application. Different from the mostly used strategies through either mixing or postmodifying base membranes with perfluorinated compounds, we report in this work a facile methodology to fabricate superhydrophobic microporous membranes made up of pure poly(vinylidene fluoride) (PVDF) via a high-humidity induced electrospinning process. The superhydrophobic property of the PVDF microporous membrane is contributed by its special microsphere-fiber interpenetrated rough structure. The effective pore size and porosity of the PVDF membranes could be well tuned by simply adjusting the PVDF concentrations in polymer solutions. The membrane with optimized superhydrophobicity and porous structure exhibits improved waterproof and breathable performance with hydrostatic pressure up to 62 kPa, water vapor transmission rate (WVT rate) of 10.6 kg m-2 d-1, and simultaneously outstanding windproof performance with air permeability up to 1.3 mm s-1. Our work represents a rather simple and perfluorinated-free strategy for fabricating superhydrophobic microporous membranes, which matches well with the environmentally friendly requirement from the viewpoint of practical application.
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Affiliation(s)
- Gaoshuo Jiang
- Department of Chemistry , Shanghai University , Shanghai 200444 , P. R. China
- i-Lab, CAS Key Laboratory of Nano-Bio Interface, CAS Center for Excellence in Nanoscience , Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou , 215123 , P. R. China
| | - Liqiang Luo
- Department of Chemistry , Shanghai University , Shanghai 200444 , P. R. China
| | - Lu Tan
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , 215123 , P. R. China
| | - Jinliang Wang
- i-Lab, CAS Key Laboratory of Nano-Bio Interface, CAS Center for Excellence in Nanoscience , Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou , 215123 , P. R. China
| | - Shenxiang Zhang
- i-Lab, CAS Key Laboratory of Nano-Bio Interface, CAS Center for Excellence in Nanoscience , Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou , 215123 , P. R. China
| | - Feng Zhang
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , 215123 , P. R. China
| | - Jian Jin
- i-Lab, CAS Key Laboratory of Nano-Bio Interface, CAS Center for Excellence in Nanoscience , Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou , 215123 , P. R. China
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57
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Rezaei M, Warsinger DM, Lienhard V JH, Duke MC, Matsuura T, Samhaber WM. Wetting phenomena in membrane distillation: Mechanisms, reversal, and prevention. WATER RESEARCH 2018; 139:329-352. [PMID: 29660622 DOI: 10.1016/j.watres.2018.03.058] [Citation(s) in RCA: 247] [Impact Index Per Article: 41.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 03/01/2018] [Accepted: 03/25/2018] [Indexed: 06/08/2023]
Abstract
Membrane distillation (MD) is a rapidly emerging water treatment technology; however, membrane pore wetting is a primary barrier to widespread industrial use of MD. The primary causes of membrane wetting are exceedance of liquid entry pressure and membrane fouling. Developments in membrane design and the use of pretreatment have provided significant advancement toward wetting prevention in membrane distillation, but further progress is needed. In this study, a broad review is carried out on wetting incidence in membrane distillation processes. Based on this perspective, the study describes the wetting mechanisms, wetting causes, and wetting detection methods, as well as hydrophobicity measurements of MD membranes. This review discusses current understanding and areas for future investigation on the influence of operating conditions, MD configuration, and membrane non-wettability characteristics on wetting phenomena. Additionally, the review highlights mathematical wetting models and several approaches to wetting control, such as membrane fabrication and modification, as well as techniques for membrane restoration in MD. The literature shows that inorganic scaling and organic fouling are the main causes of membrane wetting. The regeneration of wetting MD membranes is found to be challenging and the obtained results are usually not favorable. Several pretreatment processes are found to inhibit membrane wetting by removing the wetting agents from the feed solution. Various advanced membrane designs are considered to bring membrane surface non-wettability to the states of superhydrophobicity and superomniphobicity; however, these methods commonly demand complex fabrication processes or high-specialized equipment. Recharging air in the feed to maintain protective air layers on the membrane surface has proven to be very effective to prevent wetting, but such techniques are immature and in need of significant research on design, optimization, and pilot-scale studies.
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Affiliation(s)
- Mohammad Rezaei
- Institute of Process Engineering, Johannes Kepler University Linz, Altenberger Strasse 69, 4040 Linz, Austria.
| | - David M Warsinger
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06520-8286, USA; Rohsenow Kendall Heat Transfer Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge MA 02139-4307, USA
| | - John H Lienhard V
- Rohsenow Kendall Heat Transfer Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge MA 02139-4307, USA
| | - Mikel C Duke
- Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, Melbourne, Victoria 8001, Australia
| | - Takeshi Matsuura
- Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Wolfgang M Samhaber
- Institute of Process Engineering, Johannes Kepler University Linz, Altenberger Strasse 69, 4040 Linz, Austria
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58
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Wang Y, Zhu Y, Yang C, Liu J, Jiang W, Liang B. Facile Two-Step Strategy for the Construction of a Mechanically Stable Three-Dimensional Superhydrophobic Structure for Continuous Oil-Water Separation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24149-24156. [PMID: 29956538 DOI: 10.1021/acsami.8b06877] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
It has been a big challenge to separate oil slicks from oil-polluted water sources efficiently and in an environmentally friendly way. Three-dimensional (3D) hydrophobic and superoleophilic materials have great potential in water separation continually. In this study, we developed a facile two-step strategy for fixing functionalized nanoparticles on 3D complex macroscopic surfaces. By using commercial glue to immobilize different types of nanoparticles on the surfaces of various 3D objects, superhydrophobic copper foam, cotton wool, and polyurethane (PU) sponge with strong stability and excellent performance were prepared. Owing to flexible fixing with the glue, the prepared PU sponge remained superhydrophobic after 950 mechanical compression cycles, 250 cycles of absorption/squeezing, or soaking in n-dodecane for 60 h. The prepared PU sponge was applied to the rapid absorption of clean oil on a water surface, and the feasibility of separating mixed oil through capillary separation of cavernous bodies was examined. Furthermore, the method for loading nanoparticles onto a 3D structure can be used with many self-cleaning, flexible electrodes and catalysts.
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59
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Khayet M, Wang R. Mixed Matrix Polytetrafluoroethylene/Polysulfone Electrospun Nanofibrous Membranes for Water Desalination by Membrane Distillation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24275-24287. [PMID: 29924587 DOI: 10.1021/acsami.8b06792] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The electrospinning technique was used successfully to fabricate nanofibers of polysulfone (PSF) in which polytetrafuoroethylene nanoparticles (PTFE NPs) were embedded. The size of the PTFE NPs is only 1.7 to 3.6 times smaller than the nanofiber diameter. The transition from hydrophobic to superhydrophobic character of the bead-free PSF electrospun nanofiber mats occurred with a PTFE NPs loading in the range 12-18% of the PSF weight. Transmission electron microscopy images revealed protruding nanosized asperities on the fiber surface due to the embedded PTFE NPs in the PSF matrix. For low PTFE NPs content in PSF matrix (<6% of the polymer weight), the PTFE NPs were arranged one by one in a single file along the PSF nanofiber axis. The structural characteristics of the nanofibers and electrospun nanofibrous membranes (ENMs) were studied by means of different techniques and their relationship with the PTFE NPs loading in PSF were discussed. The PSF/PTFE ENMs were tested in desalination by direct contact membrane distillation (DCMD) and the obtained performance was discussed in terms of the ENMs structural characteristics. Competitive permeate fluxes, as high as 39.5 kg/m2h, with stable low permeate electrical conductivities (<7.145 μS/cm) for 30 g/L NaCl aqueous solution and transmembrane temperature of 60 °C were achieved without detecting any interfiber space wetting.
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Affiliation(s)
- Mohamed Khayet
- Department of Structure of Matter, Thermal Physics and Electronics, Faculty of Physics , University Complutense of Madrid , Avda. Complutense s/n 28040 Madrid , Spain
- Madrid Institute of Advances Studies of Water (IMDEA Water Institute) , Calle Punto Com No. 2 , 28805 Alcalá de Henares, Madrid , Spain
| | - Rong Wang
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute , Nanyang Technological University , 1 Cleantech Loop , Singapore 637141 , Singapore
- School of Civil and Environmental Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798 , Singapore
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60
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Wang M, Liu G, Yu H, Lee SH, Wang L, Zheng J, Wang T, Yun Y, Lee JK. ZnO Nanorod Array Modified PVDF Membrane with Superhydrophobic Surface for Vacuum Membrane Distillation Application. ACS APPLIED MATERIALS & INTERFACES 2018; 10:13452-13461. [PMID: 29616789 DOI: 10.1021/acsami.8b00271] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The vacuum membrane distillation (VMD) is a promising technology for lots of applications. To solve the membrane fouling and wetting problems, in this paper, a novel ZnO nanorods 1 H,1 H,2 H,2 H-perfluorodecyltriethoxysilane (PDTS) modified poly(vinylidene fluoride) (PVDF) membrane with a micro/nanoscale hierarchical structure and a superhydrophobic surface has been prepared and applied to the VMD process for distilling highly salty water, for the first time. Among these, a pyrolysis-adhesion method is created to obtain the ZnO seeds and fasten them on the PVDF substrate firmly. The novel modified membrane shows a stable superhydrophobic surface with a water contact angle of 152°, easy cleaning property, excellent thermal and mechanical stability, because of the Cassie's state caused by pocketing much air in the hydrophobized ZnO nanorods, the low surface energy of PDTS coating, and the strong adhesion between ZnO nanorods and PVDF membrane, which has built an ideal structure for VMD application. After 8 h VMD of 200 g L-1 NaCl solution, compared to the virgin PVDF membrane, the novel membrane shows a similar permeate flux but a much higher quality permeated liquid because of its unique antifouling and antiwetting caused by the several microns gap between the feed and the membrane. Due to its easy cleaning property, the novel membrane also exhibits an excellent reusability.
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Affiliation(s)
- Manxiang Wang
- College of Environmental Science and Engineering , Beijing Forestry University , Beijing 100083 , P. R. China
| | | | | | - Sang-Hyup Lee
- Green School , Korea University , 145 Anam-ro , Seongbuk-gu, Seoul 02841 , Republic of Korea
| | - Lei Wang
- Beijing Key Lab of Cryobiomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Jianzhong Zheng
- College of Resources and Environment , University of Chinese Academy of Sciences , 19 A Yuquan Road , Beijing 100049 , P. R. China
| | - Tao Wang
- College of Environmental Science and Engineering , Beijing Forestry University , Beijing 100083 , P. R. China
| | - Yanbin Yun
- College of Environmental Science and Engineering , Beijing Forestry University , Beijing 100083 , P. R. China
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61
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Li F, Huang J, Xia Q, Lou M, Yang B, Tian Q, Liu Y. Direct contact membrane distillation for the treatment of industrial dyeing wastewater and characteristic pollutants. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.11.058] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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62
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Guo J, Farid MU, Lee EJ, Yan DYS, Jeong S, Kyoungjin An A. Fouling behavior of negatively charged PVDF membrane in membrane distillation for removal of antibiotics from wastewater. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.01.016] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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63
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Liao Y, Loh CH, Tian M, Wang R, Fane AG. Progress in electrospun polymeric nanofibrous membranes for water treatment: Fabrication, modification and applications. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.10.003] [Citation(s) in RCA: 419] [Impact Index Per Article: 69.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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64
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Characterization of triple electrospun layers of PVDF for direct contact membrane distillation process. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-017-1437-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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65
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Selatile MK, Ray SS, Ojijo V, Sadiku R. Recent developments in polymeric electrospun nanofibrous membranes for seawater desalination. RSC Adv 2018; 8:37915-37938. [PMID: 35558586 PMCID: PMC9090136 DOI: 10.1039/c8ra07489e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 11/05/2018] [Indexed: 12/13/2022] Open
Abstract
Seawater desalination is a promising strategy that offers an abundant and reliable source of clean fresh water. Nanotechnology, in terms of nanoparticles or electrospun nanofibrous membranes, for water-treatment or desalination applications, is a new concept that has rapidly grown in interest as a method for improving performance by enhancing the surface properties of membranes. Here, we report a critical review on recent developments in membrane-fabrication methods for seawater desalination technologies, focusing mainly on the electrospinning technique. High-performance membranes that address ongoing permeability concerns, while maintaining membrane selectivity, need further study and development. Considering that the world today is faced with energy-shortage crises, these membranes also need to be energy efficient. As electrospinning is considered to be a feasible method for the production of desalination membranes, this technique requires appropriate optimization and the structural properties of the membranes produced need to be controlled in order to tailor their properties to those desired for well-known desalination technologies, such as reverse osmosis and membrane distillation. Moreover, there is a need to understand the influence of membrane structure on performance, and the latest trends in their use as high-performance desalination membranes. Seawater desalination is a promising strategy that offers an abundant and reliable source of clean fresh water.![]()
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Affiliation(s)
- Mantsopa Koena Selatile
- DST-CSIR National Centre for Nanostructured Materials
- Council for Scientific and Industrial Research
- Pretoria 0001
- South Africa
- Division of Polymer Technology
| | - Suprakas Sinha Ray
- DST-CSIR National Centre for Nanostructured Materials
- Council for Scientific and Industrial Research
- Pretoria 0001
- South Africa
- Department of Applied Chemistry
| | - Vincent Ojijo
- DST-CSIR National Centre for Nanostructured Materials
- Council for Scientific and Industrial Research
- Pretoria 0001
- South Africa
| | - Rotimi Sadiku
- Division of Polymer Technology
- Department of Chemical, Metallurgical and Materials Engineering
- Tshwane University of Technology
- South Africa
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66
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Zhao X, Xu X, Liu Y, Wang C. Luminescence performance of poly(aryl ether)s membranes with different morphologies. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24804] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaoyan Zhao
- School of Petrochemical Engineering; Changzhou University; Changzhou, 213164 China
- Stat Key Laboratory of Molecular Engineering of Polymers (Fudan University); Shanghai, 200433 China
| | - Xiao Xu
- School of Petrochemical Engineering; Changzhou University; Changzhou, 213164 China
| | - Yuan Liu
- School of Petrochemical Engineering; Changzhou University; Changzhou, 213164 China
| | - Chenyi Wang
- School of Petrochemical Engineering; Changzhou University; Changzhou, 213164 China
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67
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Li X, García-Payo M, Khayet M, Wang M, Wang X. Superhydrophobic polysulfone/polydimethylsiloxane electrospun nanofibrous membranes for water desalination by direct contact membrane distillation. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.08.011] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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68
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Qing W, Shi X, Deng Y, Zhang W, Wang J, Tang CY. Robust superhydrophobic-superoleophilic polytetrafluoroethylene nanofibrous membrane for oil/water separation. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.06.060] [Citation(s) in RCA: 124] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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69
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Lee EJ, Deka BJ, Guo J, Woo YC, Shon HK, An AK. Engineering the Re-Entrant Hierarchy and Surface Energy of PDMS-PVDF Membrane for Membrane Distillation Using a Facile and Benign Microsphere Coating. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:10117-10126. [PMID: 28753303 DOI: 10.1021/acs.est.7b01108] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
To consolidate the position of membrane distillation (MD) as an emerging membrane technology that meets global water challenges, it is crucial to develop membranes with ideal material properties. This study reports a facile approach for a polyvinylidene fluoride (PVDF) membrane surface modification that is achieved through the coating of the surface with poly(dimethylsiloxane) (PDMS) polymeric microspheres to lower the membrane surface energy. The hierarchical surface of the microspheres was built without any assistance of a nano/microcomposite by combining the rapid evaporation of tetrahydrofuran (THF) and the phase separation from condensed water vapor. The fabricated membrane exhibited superhydrophobicity-a high contact angle of 156.9° and a low contact-angle hysteresis of 11.3°-and a high wetting resistance to seawater containing sodium dodecyl sulfate (SDS). Compared with the control PVDF-hexafluoropropylene (HFP) single-layer nanofiber membrane, the proposed fabricated membrane with the polymeric microsphere layer showed a smaller pore size and higher liquid entry pressure (LEP). When it was tested for the direct-contact MD (DCMD) in terms of the desalination of seawater (3.5% of NaCl) containing SDS of a progressively increased concentration, the fabricated membrane showed stable desalination and partial wetting for the 0.1 and 0.2 mM SDS, respectively.
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Affiliation(s)
- Eui-Jong Lee
- School of Energy and Environment, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong
- Graduate School of Water Resources, Sungkyunkwan University , 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Bhaskar Jyoti Deka
- School of Energy and Environment, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong
| | - Jiaxin Guo
- School of Energy and Environment, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong
| | - Yun Chul Woo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney (UTS) , P.O. Box 123, 15 Broadway, NSW 2007, Sydney, Australia
| | - Ho Kyong Shon
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney (UTS) , P.O. Box 123, 15 Broadway, NSW 2007, Sydney, Australia
| | - Alicia Kyoungjin An
- School of Energy and Environment, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong
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70
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Superhydrophobic dual layer functionalized titanium dioxide/polyvinylidene fluoride- co -hexafluoropropylene (TiO 2 /PH) nanofibrous membrane for high flux membrane distillation. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.05.039] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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71
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Goh PS, Ismail AF, Matsuura T. Perspective and Roadmap of Energy-Efficient Desalination Integrated with Nanomaterials. SEPARATION AND PURIFICATION REVIEWS 2017. [DOI: 10.1080/15422119.2017.1335214] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- P. S. Goh
- Advanced Membrane Technology Research Centre, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Johor, Malaysia
| | - A. F. Ismail
- Advanced Membrane Technology Research Centre, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Johor, Malaysia
| | - T. Matsuura
- Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, Ontario, Canada
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Sheng J, Xu Y, Yu J, Ding B. Robust Fluorine-Free Superhydrophobic Amino-Silicone Oil/SiO 2 Modification of Electrospun Polyacrylonitrile Membranes for Waterproof-Breathable Application. ACS APPLIED MATERIALS & INTERFACES 2017; 9:15139-15147. [PMID: 28414423 DOI: 10.1021/acsami.7b02594] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Superhydrophobic waterproof-breathable membranes have attracted considerable interest owing to their multifunctional applications in self-cleaning, anti-icing, anticorrosion, outdoor tents, and protective clothing. Despite the researches pertaning to the construction of superhydrophobic functional membranes by nanoparticle finishing have increased drastically, the disconnected particle component is easy to fall off from the membranes under deformation and wear conditions, which has restricted their wide use in practice. Here, robust superhydrophobic microporous membranes were prepared via a facile and environmentally friendly strategy by dip-coating amino-silicone oil (ASO) onto the electrospun polyacrylonitrile (PAN) membranes, followed by SiO2 nanoparticles (SiO2 NPs) blade coating. Compared with hydrophilic PAN membranes, the modified membranes exhibited superhydrophobic surface with an advancing water contact angle up to 156°, after introducing ASO as low surface energy substance and SiO2 NPs as filler to reduce the pore size and construct the multihierarchical rough structure. Varying the concentrations of ASO and SiO2 NPs systematically, the PAN electrospun membranes modified with 1 wt % ASO and 0.1 wt % SiO2 NPs were endowed with good water-resistance (74.3 kPa), relative low thermal conductivity (0.0028 W m-1 K-1), modest vapor permeability (11.4 kg m-2 d-1), and air permeability (20.5 mm s-1). Besides, the inorganic-organic hybrid coating of ASO/SiO2 NPs could maintain its superhydrophobicity even after 40 abrasion cycles. The resulting membranes were found to resist variations on the pH scale from 0 to 12, and retained their water repellent properties when exposed to harsh acidic and alkali conditions. This facile fabrication of durable fluorine-free superhydrophobic membranes simultaneous with good waterproof-breathable performance provides the advantages for potential applications in self-cleaning materials and versatile protective clothing.
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Affiliation(s)
- Junlu Sheng
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University , Shanghai 201620, China
| | - Yue Xu
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University , Shanghai 201620, China
| | - Jianyong Yu
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University , Shanghai 201620, China
- Nanofibers Research Center, Modern Textile Institute, Donghua University , Shanghai 200051, China
| | - Bin Ding
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University , Shanghai 201620, China
- Nanofibers Research Center, Modern Textile Institute, Donghua University , Shanghai 200051, China
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73
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Theoretical modeling and experimental validation of transport and separation properties of carbon nanotube electrospun membrane distillation. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.12.045] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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74
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An AK, Guo J, Lee EJ, Jeong S, Zhao Y, Wang Z, Leiknes T. PDMS/PVDF hybrid electrospun membrane with superhydrophobic property and drop impact dynamics for dyeing wastewater treatment using membrane distillation. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.10.028] [Citation(s) in RCA: 256] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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75
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Lee EJ, An AK, Hadi P, Lee S, Woo YC, Shon HK. Advanced multi-nozzle electrospun functionalized titanium dioxide/polyvinylidene fluoride-co-hexafluoropropylene (TiO2/PVDF-HFP) composite membranes for direct contact membrane distillation. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.11.069] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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76
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Kyoungjin An A, Lee EJ, Guo J, Jeong S, Lee JG, Ghaffour N. Enhanced vapor transport in membrane distillation via functionalized carbon nanotubes anchored into electrospun nanofibres. Sci Rep 2017; 7:41562. [PMID: 28134288 PMCID: PMC5278503 DOI: 10.1038/srep41562] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 12/20/2016] [Indexed: 11/10/2022] Open
Abstract
To ascertain membrane distillation (MD) as an emerging desalination technology to meet the global water challenge, development of membranes with ideal material properties is crucial. Functionalized carbon nanotubes (CNTs) were anchored to nanofibres of electrospun membranes. Covalent modification and fluorination of CNTs improved their dispersibility and interfacial interaction with the polymer membrane, resulting in well-aligned CNTs inside crystalline fibres with superhydrophobicity. Consideration for the chemical/physical properties of the CNT composite membranes and calculation of their theoretical fluxes revealed the mechanism of MD: CNTs facilitated the repulsive force for Knudsen and molecular diffusions, reduced the boundary-layer effect in viscous flow, and assisted surface diffusion, allowing for fast vapor transport with anti-wetting. This study shows that the role of CNTs and an optimal composite ratio can be used to reduce the gap between theoretical and experimental approaches to desalination.
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Affiliation(s)
- Alicia Kyoungjin An
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Eui-Jong Lee
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Jiaxin Guo
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Sanghyun Jeong
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological and Environmental Science &Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Jung-Gil Lee
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological and Environmental Science &Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Noreddine Ghaffour
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological and Environmental Science &Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
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Improving Nanofiber Membrane Characteristics and Membrane Distillation Performance of Heat-Pressed Membranes via Annealing Post-Treatment. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7010078] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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78
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Woo YC, Tijing LD, Shim WG, Choi JS, Kim SH, He T, Drioli E, Shon HK. Water desalination using graphene-enhanced electrospun nanofiber membrane via air gap membrane distillation. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2016.07.049] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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79
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An AK, Guo J, Jeong S, Lee EJ, Tabatabai SAA, Leiknes T. High flux and antifouling properties of negatively charged membrane for dyeing wastewater treatment by membrane distillation. WATER RESEARCH 2016; 103:362-371. [PMID: 27486044 DOI: 10.1016/j.watres.2016.07.060] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 07/21/2016] [Accepted: 07/24/2016] [Indexed: 05/12/2023]
Abstract
This study investigated the applicability of membrane distillation (MD) to treat dyeing wastewater discharged by the textile industry. Four different dyes containing methylene blue (MB), crystal violet (CV), acid red 18 (AR18), and acid yellow 36 (AY36) were tested. Two types of hydrophobic membranes made of polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVDF) were used. The membranes were characterized by testing against each dye (foulant-foulant) and the membrane-dye (membrane-foulant) interfacial interactions and their mechanisms were identified. The MD membranes possessed negative charges, which facilitated the treatment of acid and azo dyes of the same charge and showed higher fluxes. In addition, PTFE membrane reduced the wettability with higher hydrophobicity of the membrane surface. The PTFE membrane evidenced especially its resistant to dye absorption, as its strong negative charge and chemical structure caused a flake-like (loose) dye-dye structure to form on the membrane surface rather than in the membrane pores. This also enabled the recovery of flux and membrane properties by water flushing (WF), thereby direct-contact MD with PTFE membrane treating 100 mg/L of dye mixtures showed stable flux and superior color removal during five days operation. Thus, MD shows a potential for stable long-term operation in conjunction with a simple membrane cleaning process, and its suitability in dyeing wastewater treatment.
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Affiliation(s)
- Alicia Kyoungjin An
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
| | - Jiaxin Guo
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Sanghyun Jeong
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological and Environmental Science & Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Eui-Jong Lee
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - S Assiyeh Alizadeh Tabatabai
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological and Environmental Science & Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - TorOve Leiknes
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological and Environmental Science & Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
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