1
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Mushtaq A, Cho H, Batool A, Fazal MT, Aslam M, Rehman MSU, Lam JCH, Han JI. Optimizing electroactive membrane performance for microalgae harvesting: A response surface methodology study of membrane formulation and operating parameters for electro filtration. CHEMOSPHERE 2024; 349:140967. [PMID: 38122939 DOI: 10.1016/j.chemosphere.2023.140967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 11/25/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023]
Abstract
Developing electroactive membranes for filtration has gained importance owing to their effectiveness in mitigating the long-lasting issue of fouling faced with traditional membranes. Here, we developed thin electroactive metallic films on to stainless steel mesh (SSM) using electrodeposition method and evaluated their performance for microalgae harvesting via electro filtration. The effect of electrodeposition parameters on membrane formulation and operating parameters for electro filtration, both in continuous and intermittent modes, were evaluated and optimum values were obtained using response surface methodology (RSM). The optimal combination of electrodeposition parameters is 1000 μA/cm2 and 5 min for deposition current density and time, respectively. Whereas the electric field strength of 20 V/mm with an application time of 1 min is suggested to be the optimal combination of electro filtration parameters for maximized flux recovery and corresponding experimental rejection efficiency of more than 90%. Overall, this research contributes to a better understanding of the parameters governing electro-filtration and offers insights for improving the performance of membrane-based microalgae harvesting systems.
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Affiliation(s)
- Azeem Mushtaq
- Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea; School of Energy and Environment, City University of Hong Kong, Kowloon Tong, Hong Kong SAR, Hong Kong; Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Hoon Cho
- Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Asma Batool
- School of Energy and Environment, City University of Hong Kong, Kowloon Tong, Hong Kong SAR, Hong Kong
| | - Muhammad Tahir Fazal
- Department of Chemical Engineering, Khawaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, Pakistan; Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Muhammad Aslam
- Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Muhammad Saif Ur Rehman
- Department of Chemical Engineering, Khawaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, Pakistan
| | - Jason Chun-Ho Lam
- School of Energy and Environment, City University of Hong Kong, Kowloon Tong, Hong Kong SAR, Hong Kong
| | - Jong-In Han
- Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
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2
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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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3
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Sun X, Duan L, Liu Z, Gao Q, Liu J, Zhang D. The mechanism of silica and transparent exopolymer particles (TEP) on reverse osmosis membranes fouling. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 349:119634. [PMID: 37995634 DOI: 10.1016/j.jenvman.2023.119634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/23/2023] [Accepted: 11/15/2023] [Indexed: 11/25/2023]
Abstract
Dissolved silica and transparent exopolymer particles (TEP) are the primary foulants in reverse osmosis (RO) desalinated brackish water and wastewater. In this study, we investigated the fouling properties of varying silica concentrations with TEP on the membrane surface and discovered a synergistic fouling effect between the silanol group (Si-OH) and the TEP carboxyl group (-COOH). The membrane fouling experiments showed that silica fouling approached saturation at 6 mM, with little variation in membrane flux as the silica concentration increased. Furthermore, the -OH functional group of the monosilicate molecule can chemically react with the -COO- functional group on the membrane surface to create hydrogen bonds, allowing monosilicate deposition directly on the membrane. Silica-silica interactions reacted with aggregates at high silica concentrations and joined with TEP to create a more substantial, more complex cross-linked network, resulting in severe membrane fouling. At pH 9, silica fouling was most severe due to the dramatic increase in the solubility of monosilicic acid dissolution in solution and the decreased polymerization rate. This work reveals the essential process of membrane fouling induced by silica and TEP, significantly increasing knowledge on silica-TEP fouling.
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Affiliation(s)
- Xiaochen Sun
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; School of Resources & Environment, Nanchang University, Nanchang, 330031, China; Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Qingdao, 266000, China
| | - Liang Duan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Zhenzhong Liu
- School of Resources & Environment, Nanchang University, Nanchang, 330031, China; Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Qingdao, 266000, China.
| | - Qiusheng Gao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; College of Water Science, Beijing Normal University, Beijing, 100875, China
| | - Jianing Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Dahai Zhang
- Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Qingdao, 266000, China
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4
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Mishra Y, Mishra V, Chattaraj A, Aljabali AAA, El-Tanani M, Farani MR, Huh YS, Serrano-Aroca Ã, Tambuwala MM. Carbon nanotube-wastewater treatment nexus: Where are we heading to? ENVIRONMENTAL RESEARCH 2023; 238:117088. [PMID: 37683781 DOI: 10.1016/j.envres.2023.117088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/11/2023] [Accepted: 09/05/2023] [Indexed: 09/10/2023]
Abstract
Water treatment is crucial in solving the rising people's appetite for water and global water shortages. Carbon nanotubes (CNTs) have considerable promise for water treatment because of their adjustable and distinctive arbitrary, physical, as well as chemical characteristics. This illustrates the benefits and risks of integrating CNT into the traditional water treatment resource. Due to their outstanding adsorbent ability and chemical and mechanical properties, CNTs have gained global consideration in environmental applications. The desalination and extraction capability of CNT were improved due to chemical or physical modifications in pure CNTs by various functional groups. The CNT-based composites have many benefits, such as antifouling performance, high selectivity, and increased water permeability. Nevertheless, their full-scale implementations are still constrained by their high costs. Functionalized CNTs and their promising nanocomposites to eliminate contaminants are advised for marketing and extensive water/wastewater treatment.
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Affiliation(s)
- Yachana Mishra
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, 144411, India
| | - Vijay Mishra
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, 144411, India.
| | - Aditi Chattaraj
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, 144411, India
| | - Alaa A A Aljabali
- Department of Pharmaceutics & Pharmaceutical Technology, Yarmouk University, Irbid, Jordan
| | - Mohamed El-Tanani
- College of Pharmacy, Ras Al Khaimah Medical and Health Sciences University, United Arab Emirates
| | - Marzieh Ramezani Farani
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon, 22212, Republic of Korea
| | - Yun Suk Huh
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon, 22212, Republic of Korea
| | - Ãngel Serrano-Aroca
- Biomaterials and Bioengineering Lab Translational Research Centre San Alberto Magno, Catholic University of Valencia San Vicente Mártir, Valencia, Spain
| | - Murtaza M Tambuwala
- Lincoln Medical School, University of Lincoln, Brayford Pool Campus, Lincoln, LN6 7TS, England, United Kingdom.
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5
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Sun J, Pang H, Chen L. Organic-Solvent-Resistant Polyimide/Hydroxyapatite Mixed Matrix Membranes for Lysozyme Adsorption. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7210. [PMID: 38005139 PMCID: PMC10672861 DOI: 10.3390/ma16227210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/12/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023]
Abstract
This work reports new mixed matrix membranes (MMMs) for the adsorption of enzymes from organic solvents. In this work, polyimide/hydroxyapatite (PI/HAP) MMMs were prepared via phase inversion method and further crosslinked with 3-aminopropyl triethoxysilane (APTES). The chemical and structural stability of the crosslinked PI/HAP MMMs were improved and applied for lysozyme (LZ) adsorption in organic solvent. PI/HAP MMMs were crosslinked by changing the 3-aminopropyltriethoxysilane (APTES) concentration and crosslinking time. The optimal APTES crosslinking condition for PI/HAP MMMs is 6% of concentration for 8 h. The LZ adsorption performance was studied by changing solvent types. PI/HAP MMMs possessed a high LZ adsorption in organic-solvent-aqueous solutions, and the LZ adsorption capacity reached 34.1 mg/g. The MMMs had a high desorption capacity and recovery ability. The MMMs maintained 60% of their adsorption capacity and 58% of their desorption at the fourth cycle of adsorption and desorption. The MMMs provided a new technology for the purification and separation of enzymes or proteins by MMMs in organic solvents.
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Affiliation(s)
- Junfen Sun
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, North People Road 2999, Shanghai 201620, China;
| | | | - Long Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, North People Road 2999, Shanghai 201620, China;
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6
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Gandhi CD, Sappidi P. Structure and Conformational Properties of a Short Polyaniline Chain in a Mixture of Water and Ionic Liquid [1-Ethyl-3-methyl-imidazolium][bistriflimide] Investigated by All-Atom Molecular Dynamics Simulations. J Phys Chem B 2023; 127:8019-8031. [PMID: 37683285 DOI: 10.1021/acs.jpcb.3c03009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/10/2023]
Abstract
Development of antifouling membranes for water treatment using conducting polymers and their composites is a fundamental strategy to mitigate the fouling. This manuscript presents an all-atom molecular dynamics simulations of a conducting polymer, polyaniline (PANI), immersed in an ionic liquids (ILs)-water mixtures. We have considered the ionic liquid 1-ethyl-3-methyl imidazolium bistriflimide, [EMIM]+[BIS]-. The two forms of polyaniline, emeraldine base (EB) and emeraldine salt (ES), were considered. Various intra- and intermolecular structural properties of PANI were analyzed, such as polymer chain radius of gyration Rg, radial distribution functions, and torsional angle distributions. The Rg of EB shows an increase, while the Rg of ES shows a decrease with an increase in the IL concentration. The backbone torsional angle probability distributions show a significant trans state for EB, while a combination of trans and gauche states was observed for ES. Similar supportive distributions were seen in the backbone angular distributions. Radial distribution functions between the carbon atoms at ortho and meta positions of the benzene ring on both ES and EB, as well as the amine group attached between two benzene rings, show an enhanced interaction with the ionic liquid compared to water. Anions have a dominant interaction with the polymer chain when compared to cations. The solvent accessible surface area (SASA) calculations were in accordance with the EB and ES structural properties. The SASA values are more favorable for ES than for EB. H-bond analysis shows a decrease in the number of H-bonds with water as the IL concentration increases.
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Affiliation(s)
| | - Praveenkumar Sappidi
- Department of Chemical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, India
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7
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Vargas-Figueroa C, Pino-Soto L, Beratto-Ramos A, Tapiero Y, Rivas BL, Berrio ME, Melendrez MF, Bórquez RM. In-Situ Modification of Nanofiltration Membranes Using Carbon Nanotubes for Water Treatment. MEMBRANES 2023; 13:616. [PMID: 37504982 PMCID: PMC10385991 DOI: 10.3390/membranes13070616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/08/2023] [Accepted: 06/19/2023] [Indexed: 07/29/2023]
Abstract
Modification of thin-film composite (TFC) nanofiltration (NF) membranes to increase permeability and improve separation performance remains a significant challenge for water scarcity. This study aimed to enhance the permeability and selectivity of two commercial polyamide (PA) NF membranes, NF90 and NF270, by modifying them with carbon nanotubes (CNTs) using microwave (MW)-assisted in-situ growth. The conducting polymer, polypyrrole (Ppy), and a ferrocene catalyst were used to facilitate the growth process. Chemical and morphological analyses confirmed that the surface of both membranes was modified. The NF270-Ppy-CNT membrane was selected for ion rejection testing due to its superior permeability compared to the NF90-Ppy-CNT. The modified NF270 membrane showed a 14% increase in ion rejection while maintaining constant water permeability. The results demonstrated that it is feasible to attach CNTs to a polymeric surface without compromising its functional properties. The Spliegler-Kedem model was employed to model the rejection and permeate flux of NF270-Ppy-CNT and NF270 membranes, which indicated that diffusive transport contributes to the modification to increase NaCl rejection. The present study provides a promising approach for modifying membranes by in-situ CNT growth to improve their performance in water treatment applications, such as desalination.
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Affiliation(s)
- Catalina Vargas-Figueroa
- Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Edmundo Larenas 219, Concepción 4070409, Chile
| | - Luis Pino-Soto
- Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Edmundo Larenas 219, Concepción 4070409, Chile
| | - Angelo Beratto-Ramos
- Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Edmundo Larenas 219, Concepción 4070409, Chile
| | - Yesid Tapiero
- Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Concepción 4070371, Chile
| | - Bernabé Luis Rivas
- Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Concepción 4070371, Chile
| | - María Elizabeth Berrio
- Advanced Nanocomposites Research Group (GINA), Departamento de Ingeniería en Materiales (DIMAT), Universidad de Concepción, Edmundo Larenas 315, Concepción 4070415, Chile
| | - Manuel Francisco Melendrez
- Advanced Nanocomposites Research Group (GINA), Departamento de Ingeniería en Materiales (DIMAT), Universidad de Concepción, Edmundo Larenas 315, Concepción 4070415, Chile
| | - Rodrigo M Bórquez
- Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Edmundo Larenas 219, Concepción 4070409, Chile
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8
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Mushtaq A, Cho H, Ryu H, Ahmed MA, Saif Ur Rehman M, Han JI. Novel metallic stainless-steel mesh-supported conductive membrane and its performance in the electro-filtration process. CHEMOSPHERE 2022; 308:136160. [PMID: 36030940 DOI: 10.1016/j.chemosphere.2022.136160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 08/06/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
In this study, we demonstrate the fabrication of a thoroughly metallic electro-conductive membrane by using simple filtration to uniformly coat AgNWs dispersion through stainless steel (SUS)-mesh, which functions both as filter and a flexible conductive substrate. The as-prepared AgNWs networks layer on the SUS-mesh was further strengthened by electroplating Ag layers (P-SUS membrane); exhibiting an overall electrical conductivity of 9.2 × 104 S/m, which is up to 42 times greater than the conductivity of pristine SUS-mesh. The P-SUS membrane exhibited adequate physical durability against chemical and mechanical stresses under prolonged filtration, and high pure water flux of 534 ± 54 LMH/bar. This electro-membrane displayed the anticipated flux recovery in harvesting microalgae (Chlorella sp. HS-2) when filtration was done with the membrane used as a cathode: micro-sized bubbles, generated from the cathodic membrane, functioned to detach the foulants and recover the relative flux to a significant level. The P-SUS membrane indeed possesses necessary traits that the polymer-support membrane lacks, in terms of not only electrical conductivity and mechanical strength but also filtration performance with anti-fouling capability, all of which are of necessity to be considered workable electroconductive membrane.
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Affiliation(s)
- Azeem Mushtaq
- Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea; Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Hoon Cho
- Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Hoyoung Ryu
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Muhammad Ajaz Ahmed
- Graduate School of International Agricultural Technology, Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang, 232-916, Republic of Korea
| | - Muhammad Saif Ur Rehman
- Department of Chemical Engineering, Khawaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, Pakistan
| | - Jong-In Han
- Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
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9
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Li N, Lou TJ, Wang W, Li M, Jing LC, Yang ZX, Chang RY, Li J, Geng HZ. MXene-PANI/PES composite ultrafiltration membranes with conductive properties for anti-fouling and dye removal. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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10
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Sisay EJ, Veréb G, Pap Z, Gyulavári T, Ágoston Á, Kopniczky J, Hodúr C, Arthanareeswaran G, Sivasundari Arumugam GK, László Z. Visible-light-driven photocatalytic PVDF-TiO 2/CNT/BiVO 4 hybrid nanocomposite ultrafiltration membrane for dairy wastewater treatment. CHEMOSPHERE 2022; 307:135589. [PMID: 35803379 DOI: 10.1016/j.chemosphere.2022.135589] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/04/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
Enhancing the performance of polymeric membranes by nanomaterials has become of great interest in the field of membrane technology. The present work aimed to fabricate polyvinylidene fluoride (PVDF)-hybrid nanocomposite membranes and modify them with TiO2 and/or BiVO4 nanoparticles and/or carbon nanotubes (CNTs) in various ratios. Their photocatalytic performance under visible light was also investigated. All modified PVDF membranes exhibited higher hydrophilicity (lower contact angle of water droplets) than that of the neat membrane used as a reference. The membranes were characterized by using bovine serum albumin (BSA) as model dairy wastewater. The hybrid membranes had better antifouling properties as they had lower irreversible filtration resistance than that of the neat membrane. Hybrid PVDF membranes containing TiO2/CNT/BiVO4 showed the highest flux and lowest irreversible resistance during the filtration of the BSA solution. PVDF-TiO2/BiVO4 had the highest flux recovery ratio under visible light (70% for the PVDF mixed with 0.5% TiO2 and 0.5% BiVO4). The hydrophilicity of membrane surfaces increased with the incorporation of nanoparticles, preventing BSA to bind to the surface. This resulted in a slight decrease in BSA and chemical oxygen demand rejections, which were still above 97% in all cases.
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Affiliation(s)
- Elias Jigar Sisay
- Doctoral School of Environmental Sciences, University of Szeged, H-6720, Rerrich Béla Sqr. 1, Hungary; Department of Biosystems Engineering, Faculty of Engineering, University of Szeged, H-6725, Szeged, Moszkvai Blvd. 9, Hungary.
| | - Gábor Veréb
- Department of Biosystems Engineering, Faculty of Engineering, University of Szeged, H-6725, Szeged, Moszkvai Blvd. 9, Hungary.
| | - Zsolt Pap
- Department of Applied and Environmental Chemistry, Institute of Chemistry, University of Szeged, Rerrich Béla Sqr. 1, H-6720 Szeged, Hungary.
| | - Tamás Gyulavári
- Department of Applied and Environmental Chemistry, Institute of Chemistry, University of Szeged, Rerrich Béla Sqr. 1, H-6720 Szeged, Hungary.
| | - Áron Ágoston
- Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla Sqr. 1, H-6720, Szeged, Hungary.
| | - Judit Kopniczky
- Department of Optics and Quantum Electronics, Institute of Physics, University of Szeged, Szeged, H-6720, Dóm Sqr. 9., Hungary.
| | - Cecilia Hodúr
- Department of Biosystems Engineering, Faculty of Engineering, University of Szeged, H-6725, Szeged, Moszkvai Blvd. 9, Hungary.
| | - Gangasalam Arthanareeswaran
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620015, India.
| | | | - Zsuzsanna László
- Department of Biosystems Engineering, Faculty of Engineering, University of Szeged, H-6725, Szeged, Moszkvai Blvd. 9, Hungary.
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11
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Liu B, Xia Q, Zhao Y, Gao G. Dielectrophoresis-Based Universal Membrane Antifouling Strategy toward Colloidal Foulants. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:10997-11005. [PMID: 35860842 DOI: 10.1021/acs.est.2c03900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Membrane fouling compromises the benefits of membrane technology, leading to its performance deterioration and incremental cost. Coupling with an electric field has been attractive but is limited by the electrical dependence of the electrophoresis (EP) mechanism and undesired faradic reactions. This study reports a universal dielectrophoresis-based (DEP) membrane antifouling strategy for electronegative, electropositive, and neutral colloidal foulants, which depends on the particle polarizability rather than its charge. The porous Ni@PVDF model electroconductive membrane was fabricated to construct a nonuniform electric field inducing DEP, while applying a low voltage avoided side electrochemical reactions. For electronegative SiO2(-) and electropositive Al2O3(+) particles with a lower relative permittivity than the medium water (78), the membrane permeability all remarkably increased by 90.1% under AC/DC (±1.0 V) fields. By contrast, serious membrane fouling occurred for the BaTiO3 colloids with a higher relative permittivity (∼2000). Notably, the permittivity of nearly all colloids in wastewater treatment is much less than that of water, which makes the dielectrophoresis-based antifouling strategy universal. The theoretical simulation systematically analyzed the forces on particles including DEP, EP, and others, indicating that the formed protected area on the membrane pore wall by DEP forces prevented the irreversible membrane blockage of colloids and facilitated loose cake layer formation for alleviating membrane fouling. In brief, this work reported a hopeful concept for dielectrophoresis-based membrane antifouling and verified its antifouling mechanism.
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Affiliation(s)
- Bin Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Qiancheng Xia
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Yang Zhao
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Guandao Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
- Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
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12
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Meta-analysis of electrically conductive membranes: A comparative review of their materials, applications, and performance. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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13
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14
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Surface and internal modification of composite ion exchange membranes for removal of molybdate, phosphate, and nitrate from polluted groundwater. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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15
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Wang Q, Peng Y, Ji X, Hadi MK, Zhang S, Tang J, Ran F. Conductive 3D networks in a 2D layer for high performance ultrafiltration membrane with high flux-retention and robust cyclic stability. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119781] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Functionalized Carbon Nanotubes (CNTs) for Water and Wastewater Treatment: Preparation to Application. SUSTAINABILITY 2021. [DOI: 10.3390/su13105717] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
As the world human population and industrialization keep growing, the water availability issue has forced scientists, engineers, and legislators of water supply industries to better manage water resources. Pollutant removals from wastewaters are crucial to ensure qualities of available water resources (including natural water bodies or reclaimed waters). Diverse techniques have been developed to deal with water quality concerns. Carbon based nanomaterials, especially carbon nanotubes (CNTs) with their high specific surface area and associated adsorption sites, have drawn a special focus in environmental applications, especially water and wastewater treatment. This critical review summarizes recent developments and adsorption behaviors of CNTs used to remove organics or heavy metal ions from contaminated waters via adsorption and inactivation of biological species associated with CNTs. Foci include CNTs synthesis, purification, and surface modifications or functionalization, followed by their characterization methods and the effect of water chemistry on adsorption capacities and removal mechanisms. Functionalized CNTs have been proven to be promising nanomaterials for the decontamination of waters due to their high adsorption capacity. However, most of the functional CNT applications are limited to lab-scale experiments only. Feasibility of their large-scale/industrial applications with cost-effective ways of synthesis and assessments of their toxicity with better simulating adsorption mechanisms still need to be studied.
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17
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Carbon nanotube membranes – Strategies and challenges towards scalable manufacturing and practical separation applications. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117929] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Li S, Zhao X, Zhang H. Aging retardation strategy of PVDF membranes: evaluation of free radical scavenging effect of nano-particles. NEW J CHEM 2021. [DOI: 10.1039/d0nj05980c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ESR and spectrophotometry proved that nano-particles can effectively remove free radicals produced by NaClO, and analyzed the mechanism of delaying aging.
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Affiliation(s)
- Siyi Li
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University
- Tianjin
- China
- School of Environmental Science and Engineering
- Tiangong University
| | - Xuehui Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University
- Tianjin
- China
- School of Environmental Science and Engineering
- Tiangong University
| | - Hongwei Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University
- Tianjin
- China
- School of Environmental Science and Engineering
- Tiangong University
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19
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Li M, Zuo K, Liang S, Xiao K, Liang P, Wang X, Huang X. Electrically Tuning Ultrafiltration Behavior for Efficient Water Purification. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:11536-11545. [PMID: 32841015 DOI: 10.1021/acs.est.0c02441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Conventional ultrafiltration (UF) technology suffers from membrane fouling and limited separation performance. This work demonstrates a novel electrical tuning strategy to improve the separation efficiency of the UF process. An electrically enhanced UF (EUF) system with two sets of oppositely placed membrane-electrode modules was set up. A series of multicycle treatment experiments were conducted to reveal the performance and tuning mechanism of the EUF system. The applied electrical tuning operation brought about an up to 68% reduction of average transmembrane pressure increasing rate (Rp), indicating a strong capability in inhibiting membrane fouling. This fouling reduction can be mainly ascribed to the applied electrophoretic force, changes in solution chemistry, and generation of peroxide, which repulses foulants away from the membrane, hampers foulant adsorption owing to enhanced electrostatic repulsion, and degrades foulants, respectively. The 1.2 V voltage was identified as an effective voltage for stably inhibiting membrane fouling. Besides, the electrical tuning operation led to an up to ∼32% increase in foulant retention rate (φ) owing to both non-Faradaic effects (including electrosorption and electrophoretic repulsion) and Faradaic oxidative degradation. Moreover, the electrical tuning operation allowed a remarkable desalination capability with a significantly higher desalination rate and an up to ∼43% greater salt adsorption capacity as compared with a conventional capacitive deionization process. Additionally, the EUF system achieved a good performance in removing heavy metals (Ag, Cu, Pb, Se, and Sb). The overall enhanced EUF performance suggests promising prospects for practical applications.
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Affiliation(s)
- Min Li
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, P. R. China
| | - Kuichang Zuo
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, P. R. China
| | - Shuai Liang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, P. R. China
| | - Kang Xiao
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Peng Liang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, P. R. China
| | - Xiaomao Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, P. R. China
| | - Xia Huang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, P. R. China
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20
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Wang S, Huang X, Elimelech M. Complexation between dissolved silica and alginate molecules: Implications for reverse osmosis membrane fouling. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Wang Y, Han M, Liu L, Yao J, Han L. Beneficial CNT Intermediate Layer for Membrane Fluorination toward Robust Superhydrophobicity and Wetting Resistance in Membrane Distillation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:20942-20954. [PMID: 32275384 DOI: 10.1021/acsami.0c03577] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Robust membrane hydrophobicity is crucial in membrane distillation (MD) to produce clean water, yet challenged by wetting phenomenon. We herein proposed a robust superhydrophobization process, by making use of a carbon nanotube (CNT) intermediate layer over commercial hydrophobic membrane, indirectly grafting the low-surface-energy material 1H,1H,2H,2H-perfluorodecyltriethoxysilane (FAS), with the achieved membrane denoted as PVDF-CNT-FAS, in systematic comparison with direct grafting FAS on alkalinized PVDF denoted as PVDF-OH-FAS. Superhydrophobicity with water contact angle of 180° was easily achieved from initial hydrophilic interface for both two resultant membranes. Interestingly, the existence of a CNT intermediate layer significantly maintained the stable hydrophobicity in various harsh conditions and improved mechanical properties, at an expense of ca. 20% smaller pore size and extended membrane thickness than PVDF-OH-FAS. In the MD experiment, the PVDF-CNT-FAS exhibited no vapor flux sacrifice, giving constant flux with the control and doubled that for PVDF-OH-FAS. A mass-heat transfer modeling suggested no significant heat loss but facilitated vapor flux with the CNT layer, unlike the impeded transfer for the counterpart membrane. A superior wetting resistance against 0.4 mM SDS further confirmed the benefit of constructing the CNT intermediate layer, presumably because of its excellent slippery property. This study demonstrates the important role of the CNT intermediate layer toward robust superhydrophobic membrane, suggesting the interest of applying the functional nanomaterial for controllable interface design.
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Affiliation(s)
- Yuting Wang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, School of Environment and Ecology, Chongqing University, Chongqing 400045, PR China
| | - Minyuan Han
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, School of Environment and Ecology, Chongqing University, Chongqing 400045, PR China
| | - Lang Liu
- Key Laboratory of low-grade Energy Utilization Technologies and Systems, Ministry of Education, School of Energy and Power Engineering, Chongqing University, Chongqing 400045, PR China
| | - Jingmei Yao
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, School of Environment and Ecology, Chongqing University, Chongqing 400045, PR China
| | - Le Han
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, School of Environment and Ecology, Chongqing University, Chongqing 400045, PR China
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22
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Wang S, Mu C, Xiao K, Zhu X, Huang X. Surface charge regulation of reverse osmosis membrane for anti-silica and organic fouling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 715:137013. [PMID: 32041057 DOI: 10.1016/j.scitotenv.2020.137013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 01/28/2020] [Accepted: 01/29/2020] [Indexed: 06/10/2023]
Abstract
Dissolved silica and organic matter are major foulants in reverse osmosis (RO) in brackish water treatment. Though the mechanism of inorganic and organic fouling has been clear, combined silica-organic fouling-resistant membrane have been poorly investigated. In this study, we fabricated membranes with different surface charge. More negatively surface charged membrane (-COOH), acrylic acid (AA) membrane was fabricated through redox free radical grafting method. Ethylamine (EA) and ethylenediamine (ED) membranes with neutral or less negative surface charge were fabricated through -CH3 or -NH2 functional groups grafting. The surface modified membranes were characterized in terms of physicochemical properties and antifouling performance. Compared with the pristine membrane, all the modified membranes possessed better salt rejection without sacrificing water permeability. The AA membrane also showed better antifouling property and higher water flux recovery after physical rinsing. On the other hand, fouling on the EA and ED membranes were aggravated. Unlike the gel-like foulant structure on the EA and ED membrane surfaces, the AA membrane presented more disordered granular structure. Analysis of fouling layer has also proved that there was less silica scaling and organic foulants on the AA membrane surface. Despite the outstanding hydrophilicity of the AA membrane, its antifouling property was mainly attributed to the more negative surface charge, according to regression between flux decline and membrane characteristics. Importantly, we proposed that electrostatic interaction was the dominant fouling mechanism in the combined silica-organic fouling. With more negative surface charge, the AA membrane was prone to prevent foulants from depositing and aggravating, so as to mitigate membrane fouling. Our research provides a simple and practical approach to RO membrane fabrication for anti-inorganic and organic.
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Affiliation(s)
- Shu Wang
- Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Changjun Mu
- Weihai Weigao Purification Products Co., Ltd., Weihai, Shandong 264210, China
| | - Kang Xiao
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xianzheng Zhu
- Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
| | - Xia Huang
- Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
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23
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Wu Y, Xia Y, Jing X, Cai P, Igalavithana AD, Tang C, Tsang DCW, Ok YS. Recent advances in mitigating membrane biofouling using carbon-based materials. JOURNAL OF HAZARDOUS MATERIALS 2020; 382:120976. [PMID: 31454608 DOI: 10.1016/j.jhazmat.2019.120976] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 06/07/2019] [Accepted: 08/06/2019] [Indexed: 05/26/2023]
Abstract
Biofouling is the Achilles Heel of membrane processes. The accumulation of organic foulants and growth of microorganisms on the membrane surface reduce the permeability, shorten the membrane life, and increase the energy consumption. Advancements in novel carbon-based materials (CBMs) present significant opportunities in mitigating biofouling of membrane processes. This article provides a comprehensive review of the recent progress in the application of CBMs in antibiofouling membrane. It starts with a detailed summary of the different antibiofouling mechanisms of CBM-containing membrane systems. Next, developments in membrane modification using CBMs, especially carbon nanotubes and graphene family materials, are critically reviewed. Further, the antibiofouling potential of next-generation carbon-based membranes is surveyed. Finally, the current problems and future opportunities of applying CBMs for antibiofouling membranes are discussed.
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Affiliation(s)
- Yichao Wu
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, China
| | - Yinfeng Xia
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea; College of Water Conservancy & Environmental Engineering, Zhejiang University of Water Resources & Electric Power, Hangzhou, China
| | - Xinxin Jing
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, China
| | - Peng Cai
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, China
| | - Avanthi Deshani Igalavithana
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Chuyang Tang
- Department of Civil Engineering, the University of Hong Kong, Pokfulam, Hong Kong, China; School of Chemical Engineering, University of New South Wales, Kensington, Sydney, NSW, 2033, Australia; School of Civil and Environmental Engineering, University of New South Wales, Kensington, Sydney, NSW, 2033, Australia
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Yong Sik Ok
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea.
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24
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Xu X, Zhang H, Yu M, Wang Y, Gao T, Yang F. Conductive thin film nanocomposite forward osmosis membrane (TFN-FO) blended with carbon nanoparticles for membrane fouling control. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 697:134050. [PMID: 32380598 DOI: 10.1016/j.scitotenv.2019.134050] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 06/23/2019] [Accepted: 08/21/2019] [Indexed: 05/28/2023]
Abstract
Membrane fouling in forward osmosis (FO) significantly affects water flux and membrane life, which restricts the further development of FO. In this work, carbon nanoparticles were blended in polyethersulfone (PES) to prepare a conductive thin film nanocomposite (TFN) FO membrane to control the membrane fouling in FO processes. The membrane containing 4 wt% carbon exhibited an optimum performance with water flux of 14.0 and 17.2 LMH for FO (active layer for FS) and PRO (active layer for DS) modes, respectively, using DI water as feed solution and 1 M NaCl as draw solution and electrical conductivity of 170.1 mS/m. Dynamic antifouling experiments showed that, compared with no voltage applied, the water flux decline of surface charged TFN-FO membrane was significantly retarded. For CaSO4, BSA and LYS as model contaminants, the water fluxes were improved by 31%, 13% and 7% under the voltages of +1.7 V, -1.7 V and +1.7 V, respectively. Moreover, the charged membrane is more effective in relieving the initial membrane fouling, and contaminant-contaminant interactions mechanism dominates the formation of further membrane fouling processes. Therefore, for contaminants with different charge conditions, customizing membrane surface charges is a feasible and promising approach for controlling membrane fouling in situ method.
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Affiliation(s)
- Xiaotong Xu
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
| | - Hanmin Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China.
| | - Mingchuan Yu
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
| | - Yuezhu Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
| | - Tianyu Gao
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
| | - Fenglin Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
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25
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Han B, Wang X, Zheng J, Liang S, Xiao K, Yu J, Qian Z, Huang X. Determination of Surface Energy Parameters of Hydrophilic Porous Membranes via a Corrected Contact Angle Approach. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:15009-15016. [PMID: 31671941 DOI: 10.1021/acs.langmuir.9b02508] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
While the contact angle is a well-applied indicator of membrane hydrophobicity and surface energy, the interference of surface roughness and porosity in contact angle measurement and surface energy calculation has been long neglected in the field of porous membrane study. We propose an improved method to straightforwardly derive the surface energy of the porous membrane from contact angles with the interference effect corrected. A linearized model was established combining the Young-Dupré and Cassie-Baxter equations, from which the surface energy (Lifshitz-van der Waals and Lewis acid/base components) and roughness index (surface area difference) can be solved simultaneously at a given porosity using contact angles measured with a set of standard polar/nonpolar test liquids. The model solution was examined using hydrophilic microfiltration membranes with different pore morphologies (including perforated plate-like PCTE, irregular particulate bed-like PVDF, and fibrous mesh-like PTFE membranes), with the robustness of the results evaluated via Monte Carlo simulation. In comparison with the verified results of the model solution, it was found that the Lifshitz-van der Waals Lewis acid/base energy values for the tested membranes would deviate by 50-87, 30-160, and 52-97%, respectively, if surface roughness and porosity were neglected in the calculation. The profound effect of roughness and porosity on surface energy determination was further confirmed via theoretical analysis of the Young-Dupré and Cassie-Baxter relationships. This improved approach may apply to the surface energy characterization of hydrophilic rough porous membranes (e.g., hydrophilic microfiltration membranes).
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Affiliation(s)
- Bingjun Han
- College of Resources and Environment , University of Chinese Academy of Sciences , Beijing 100049 , Beijing , China
| | | | - Jianzhong Zheng
- College of Resources and Environment , University of Chinese Academy of Sciences , Beijing 100049 , Beijing , China
| | - Shuai Liang
- College of Environmental Science and Engineering , Beijing Forestry University , Beijing 100083 , Beijing , China
| | - Kang Xiao
- College of Resources and Environment , University of Chinese Academy of Sciences , Beijing 100049 , Beijing , China
| | - Jinlan Yu
- College of Resources and Environment , University of Chinese Academy of Sciences , Beijing 100049 , Beijing , China
| | - Zhi Qian
- College of Resources and Environment , University of Chinese Academy of Sciences , Beijing 100049 , Beijing , China
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26
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A novel method for the fabrication of silver nanowires-based highly electro-conductive membrane with antifouling property for efficient microalgae harvesting. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.117258] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Liang S, Li M, Cao J, Zuo K, Bian Y, Xiao K, Huang X. Integrated ultrafiltration–capacitive-deionization (UCDI) for enhanced antifouling performance and synchronous removal of organic matter and salts. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.05.085] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Light-induced reversible phase transition in polyvinylidene fluoride-based nanocomposites. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1564-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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29
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Jaleh B, Zare E, Azizian S, Qanati O, Nasrollahzadeh M, Varma RS. Preparation and Characterization of Polyvinylpyrrolidone/Polysulfone Ultrafiltration Membrane Modified by Graphene Oxide and Titanium Dioxide for Enhancing Hydrophilicity and Antifouling Properties. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01367-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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30
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Fan X, Liu Y, Wang X, Quan X, Chen S. Improvement of Antifouling and Antimicrobial Abilities on Silver-Carbon Nanotube Based Membranes under Electrochemical Assistance. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:5292-5300. [PMID: 30933494 DOI: 10.1021/acs.est.9b00313] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Excellent fouling resistance to various foulants is crucial to maintain the separation performance of membranes in providing potable water. Antimicrobial modification is effective for antibiofouling but fails to mitigate organic fouling. Improving surface charges can improve the resistance to charged foulants, but the lack of antimicrobial ability results in bacterial aggregation. Herein, a silver nanoparticle modified carbon nanotube (Ag-CNT)/ceramic membrane was prepared with enhanced antifouling and antimicrobial properties under electrochemical assistance. The presence of silver nanoparticles endows the composite membrane with antimicrobial ability by which biofilm formation is inhibited. Its steady-state flux is 1.9 times higher than that for an unmodified membrane in filtering bacterial suspension. Although the formation of organic fouling did weaken the biofouling resistance, the negatively charged bacteria and organic matter can be sufficiently repelled away from the cathodic membrane under electrochemical assistance. The flux loss under a low-voltage of 2.0 V decreased to <10% from >35% for the membrane alone when bacteria and organic matter coexisted in the feedwater. More importantly, silver dissolution was significantly inhibited via an in situ electroreduction process by which the Ag+ concentration in the effluent (<1.0 μg/L) was about 2 orders of magnitude lower than that without voltage. The integration of antimicrobial modification and electrochemistry offers a new prospect in the development of membranes with high fouling resistance in water treatment.
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Affiliation(s)
- Xinfei Fan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
- College of Environmental Science and Engineering , Dalian Maritime University , Dalian 116026 , China
| | - Yanming Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Xiaochen Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Xie Quan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Shuo Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
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31
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Superhydrophilic and oleophobic membrane functionalized with heterogeneously tailored two-dimensional layered double hydroxide nanosheets for antifouling. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.01.054] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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32
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Yuan XS, Guo ZY, Geng HZ, Rhen DS, Wang L, Yuan XT, Li J. Enhanced performance of conductive polysulfone/MWCNT/PANI ultrafiltration membrane in an online fouling monitoring application. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.01.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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33
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Hu C, Li M, Sun J, Liu R, Liu H, Qu J. NOM fouling resistance in response to electric field during electro-ultrafiltration: Significance of molecular polarity and weight. J Colloid Interface Sci 2019; 539:11-18. [DOI: 10.1016/j.jcis.2018.12.048] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 11/29/2018] [Accepted: 12/12/2018] [Indexed: 12/16/2022]
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34
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Cui Z, Li W, Zeng H, Tang X, Zhang J, Qin S, Han N, Li J. Fabricating PVDF hollow fiber microfiltration membrane with a tenon-connection structure via the thermally induced phase separation process to enhance strength and permeability. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.12.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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35
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Characterizing the roles of organic and inorganic foulants in RO membrane fouling development: The case of coal chemical wastewater treatment. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.09.062] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Wang K, Xu L, Li K, Liu L, Zhang Y, Wang J. Development of polyaniline conductive membrane for electrically enhanced membrane fouling mitigation. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.10.050] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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37
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Ali S, Rehman SAU, Luan HY, Farid MU, Huang H. Challenges and opportunities in functional carbon nanotubes for membrane-based water treatment and desalination. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 646:1126-1139. [PMID: 30235599 DOI: 10.1016/j.scitotenv.2018.07.348] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 07/23/2018] [Accepted: 07/24/2018] [Indexed: 05/20/2023]
Abstract
Environmental applications of carbon nanotubes (CNTs) have grabbed worldwide attentions due to their excellent adsorption capacities and promising physical, chemical and mechanical properties. The functionalization of CNTs, which involves chemical/physical modification of pristine CNTs with different types of functional groups, improves the capabilities of CNT for desalination and/or removals of waterborne contaminants. This paper intends to provide a comprehensive review of functional CNT materials (f-CNT) and their existing and potential applications in membrane-based water treatment and desalination processes, with focuses on critical evaluation of advances, knowledge gaps and future research directions. CNT nanocomposite membranes have been studied at bench scale to efficiently remove a variety of waterborne contaminants and salts, while future improvement is under way with development in CNT functionalization techniques. The CNT-based membrane applications are found to possess a variety of advantages, including improve water permeability, high selectivity and antifouling capability. However, their applications at full scale are still limited by their high cost. Finally, we highlight that f-CNT membranes with promising removal efficiencies for respective contaminants be considered for commercialization and to achieve holistic performance for the purpose of water treatment and desalination.
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Affiliation(s)
- Sharafat Ali
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China
| | - Syed Aziz Ur Rehman
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China
| | - Hong-Yan Luan
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China
| | - Muhammad Usman Farid
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Haiou Huang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China; Department of Environmental Health Sciences, Bloomberg School of Public Health, The John Hopkins University, 615 North Wolfe Street, MD 21205, USA.
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Fu W, Wang X, Zheng J, Liu M, Wang Z. Antifouling performance and mechanisms in an electrochemical ceramic membrane reactor for wastewater treatment. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.10.077] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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39
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Lu P, Liu Y, Zhou T, Wang Q, Li Y. Recent advances in layered double hydroxides (LDHs) as two-dimensional membrane materials for gas and liquid separations. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.09.041] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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40
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Li C, Guo X, Wang X, Fan S, Zhou Q, Shao H, Hu W, Li C, Tong L, Kumar RR, Huang J. Membrane fouling mitigation by coupling applied electric field in membrane system: Configuration, mechanism and performance. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.06.150] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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41
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Characterization of a support-free carbon nanotube-microporous membrane for water and wastewater filtration. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.03.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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High conductive PPy–CNT surface-modified PES membrane with anti-fouling property. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0826-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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43
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Enhanced separation performance of carbon nanotube–polyvinyl alcohol composite membranes for emulsified oily wastewater treatment under electrical assistance. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.12.058] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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44
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Development of graphene oxide (GO)/multi-walled carbon nanotubes (MWCNTs) nanocomposite conductive membranes for electrically enhanced fouling mitigation. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.02.001] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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45
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Fabrication and in-situ fouling mitigation of a supported carbon nanotube/γ-alumina ultrafiltration membrane. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.12.050] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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46
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Preparation and characterization of SLS-CNT/PES ultrafiltration membrane with antifouling and antibacterial properties. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.11.046] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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47
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Gao Y, Fang Z, Liang P, Huang X. Direct concentration of municipal sewage by forward osmosis and membrane fouling behavior. BIORESOURCE TECHNOLOGY 2018; 247:730-735. [PMID: 30060407 DOI: 10.1016/j.biortech.2017.09.145] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 09/19/2017] [Accepted: 09/21/2017] [Indexed: 06/08/2023]
Abstract
Forward osmosis (FO) draws attention due to its advantages compares to traditional pressure-driven membrane processes. In this study, a FO membrane concentrating system was built for sewage concentration to investigate membrane rejection, concentrating effect, membrane fouling behavior. Sewage could be concentrated to 1/10 original volume by FO membrane, while pollutants concentrating multiple could not reach 10. The FO membrane had excellent rejecting effect, with effluent COD, ammonia nitrogen, total nitrogen, total phosphorus concentration of 18, 2.5, 2.8, 0.4mg/L, respectively. The FO membrane flux was mainly associated with the draw solution (DS) concentration, which increased with DS concentration but more severe membrane fouling engendered in the meantime. Scanning electronic microscope and fourier transform infrared spectroscopy analysis indicated the formation and constitution of the fouling layer, which included humic acid, protein, and polysaccharide. After concentration, fouled FO membrane was remitted by physical and chemical cleaning, with recovery of 90% and 96%.
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Affiliation(s)
- Yue Gao
- School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China
| | - Zhou Fang
- School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China
| | - Peng Liang
- School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China
| | - Xia Huang
- School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China.
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48
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Cui Z, Wang J, Zhang H, Song L, Jia H, Yang G, Gao F. Influence of selective permeation of backwashing solution on the cleaning effectiveness in hollow fiber system. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.10.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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49
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Removal of lead ions from polyether sulfone/Pb(II)-imprinted multi-walled carbon nanotubes mixed matrix membrane. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.06.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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50
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Formoso P, Pantuso E, De Filpo G, Nicoletta FP. Electro-Conductive Membranes for Permeation Enhancement and Fouling Mitigation: A Short Review. MEMBRANES 2017; 7:E39. [PMID: 28788091 PMCID: PMC5618124 DOI: 10.3390/membranes7030039] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 07/07/2017] [Accepted: 07/20/2017] [Indexed: 01/27/2023]
Abstract
The research on electro-conductive membranes has expanded in recent years. These membranes have strong prospective as key components in next generation water treatment plants because they are engineered in order to enhance their performance in terms of separation, flux, fouling potential, and permselectivity. The present review summarizes recent developments in the preparation of electro-conductive membranes and the mechanisms of their response to external electric voltages in order to obtain an improvement in permeation and mitigation in the fouling growth. In particular, this paper deals with the properties of electro-conductive polymers and the preparation of electro-conductive polymer membranes with a focus on responsive membranes based on polyaniline, polypyrrole and carbon nanotubes. Then, some examples of electro-conductive membranes for permeation enhancement and fouling mitigation by electrostatic repulsion, hydrogen peroxide generation and electrochemical oxidation will be presented.
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Affiliation(s)
- Patrizia Formoso
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, I-87036 Rende (CS), Italy.
| | - Elvira Pantuso
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, I-87036 Rende (CS), Italy.
| | - Giovanni De Filpo
- Department of Chemistry and Chemical Technologies, University of Calabria, I-87036 Rende (CS), Italy.
| | - Fiore Pasquale Nicoletta
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, I-87036 Rende (CS), Italy.
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