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Moon SJ, Kim YJ, Kang DR, Lee SY, Kim JH. Fluorine-Containing, Self-Assembled Graft Copolymer for Tuning the Hydrophilicity and Antifouling Properties of PVDF Ultrafiltration Membranes. Polymers (Basel) 2023; 15:3623. [PMID: 37688249 PMCID: PMC10490059 DOI: 10.3390/polym15173623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
Neat poly(vinylidene fluoride) (PVDF) ultrafiltration (UF) membranes exhibit poor water permeance and surface hydrophobicity, resulting in poor antifouling properties. Herein, we report the synthesis of a fluorine-containing amphiphilic graft copolymer, poly(2,2,2-trifluoroethyl methacrylate)-g-poly(ethylene glycol) behenyl ether methacrylate (PTFEMA-g-PEGBEM), hereafter referred to as PTF, and its effect on the structure, morphology, and properties of PVDF membranes. The PTF graft copolymer formed a self-assembled nanostructure with a size of 7-8 nm, benefiting from its amphiphilic nature and microphase separation ability. During the nonsolvent-induced phase separation (NIPS) process, the hydrophilic PEGBEM chains were preferentially oriented towards the membrane surface, whereas the superhydrophobic PTFEMA chains were confined in the hydrophobic PVDF matrix. The PTF graft copolymer not only increased the pore size and porosity but also significantly improved the surface hydrophilicity, flux recovery ratio (FRR), and antifouling properties of the membrane. The membrane performance was optimal at 5 wt.% PTF loading, with a water permeance of 45 L m-2 h-1 bar-1, a BSA rejection of 98.6%, and an FRR of 83.0%, which were much greater than those of the neat PVDF membrane. Notably, the tensile strength of the membrane reached 6.34 MPa, which indicated much better mechanical properties than those reported in the literature. These results highlight the effectiveness of surface modification via the rational design of polymer additives and the precise adjustment of the components for preparing membranes with high performance and excellent mechanical properties.
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Affiliation(s)
| | | | | | | | - Jong Hak Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
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Vatanpour V, Paziresh S, Behroozi AH, Karimi H, Esmaeili MS, Parvaz S, Imanian Ghazanlou S, Maleki A. Fe 3O 4@Gum Arabic modified polyvinyl chloride membranes to improve antifouling performance and separation efficiency of organic pollutants. CHEMOSPHERE 2023; 328:138586. [PMID: 37028725 DOI: 10.1016/j.chemosphere.2023.138586] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/31/2023] [Accepted: 04/01/2023] [Indexed: 06/19/2023]
Abstract
Nanofiltration (NF) membranes are promising media for water and wastewater treatment; however, they suffer from their hydrophobic nature and low permeability. For this reason, the polyvinyl chloride (PVC) NF membrane was modified by iron (III) oxide@Gum Arabic (Fe3O4@GA) nanocomposite. First, Fe3O4@GA nanocomposite was synthesized by the co-precipitation approach and then its morphology, elemental composition, thermal stability, and functional groups were characterized by various analyses. Next, the prepared nanocomposite was added to the casting solution of the PVC membrane. The bare and modified membranes were fabricated by a nonsolvent-induced phase separation (NIPS) method. The characteristics of fabricated membranes were assessed by mechanical strength, water contact angle, pore size, and porosity measurements. The optimum Fe3O4@GA/PVC membrane had a 52 L m-2. h-1. bar-1 water flux with a high flux recovery ratio (FRR) value (82%). Also, the filtration experiment exhibited that the Fe3O4@GA/PVC membrane could remarkably remove organic contaminants, achieving high rejection rates of 98% Reactive Red-195, 95% Reactive Blue-19, and 96% Rifampicin antibiotic by 0.25 wt% of Fe3O4@GA/PVC membrane. According to the results, adding Fe3O4@GA green nanocomposite to the membrane casting solution is a suitable and efficient procedure for modifying NF membranes.
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Affiliation(s)
- Vahid Vatanpour
- Department of Applied Chemistry, Faculty of Chemistry, Kharazmi University, 15719-14911, Tehran, Iran; National Research Center on Membrane Technologies, Istanbul Technical University 34469 Istanbul, Turkiye; Department of Environmental Engineering, Istanbul Technical University, 34469, Istanbul, Turkiye.
| | - Shadi Paziresh
- Department of Applied Chemistry, Faculty of Chemistry, Kharazmi University, 15719-14911, Tehran, Iran
| | - Amir Hossein Behroozi
- School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Hamid Karimi
- Central Chemistry Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran; Nano Material Laboratory, School of Advanced Technologies, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Mir Saeed Esmaeili
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran; Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Sina Parvaz
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Siamak Imanian Ghazanlou
- Nano Material Laboratory, School of Advanced Technologies, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran.
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An Overview on Exploitation of Graphene-Based Membranes: From Water Treatment to Medical Industry, Including Recent Fighting against COVID-19. Microorganisms 2023; 11:microorganisms11020310. [PMID: 36838275 PMCID: PMC9967324 DOI: 10.3390/microorganisms11020310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/20/2023] [Accepted: 01/21/2023] [Indexed: 01/26/2023] Open
Abstract
Graphene and its derivatives have lately been the subject of increased attention for different environmental applications of membrane technology such as water treatment and air filtration, exploiting their antimicrobial and antiviral activity. They are interesting candidates as membrane materials for their outstanding mechanical and chemical stability and for their thin two-dimensional (2D) nanostructure with potential pore engineering for advanced separation. All these applications have evolved and diversified from discovery to today, and now graphene and graphene derivatives also offer fascinating opportunities for the fight against infective diseases such as COVID-19 thanks to their antimicrobial and antiviral properties. This paper presents an overview of graphene-based 2D materials, their preparation and use as membrane material for applications in water treatment and in respiratory protection devices.
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Fabrication of Ti 2SnC-MAX Phase Blended PES Membranes with Improved Hydrophilicity and Antifouling Properties for Oil/Water Separation. Molecules 2022; 27:molecules27248914. [PMID: 36558045 PMCID: PMC9788415 DOI: 10.3390/molecules27248914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/07/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022] Open
Abstract
In this research work, the Ti2SnC MAX phase (MP) was synthesized via the reactive sintering procedure. The layered and crystalline structure of this MP was verified by SEM, HRTEM, and XRD analyses. This nano-additive was used for improvement of different features of the polyethersulfone (PES) polymeric membranes. The blended membranes containing diverse quantities of the MP (0-1 wt%) were fabricated by a non-solvent-induced phase inversion method. The asymmetric structure of the membranes with small holes in the top layer and coarse finger-like holes and macro-voids in the sublayer was observed by applying SEM analysis. The improvement of the membrane's hydrophilicity was verified via reducing the contact angle of the membranes from 63.38° to 49.77° (for bare and optimum membranes, respectively). Additionally, in the presence of 0.5 wt% MP, the pure water flux increased from 286 h to 355 L/m2 h. The average roughness of this membrane increased in comparison with the bare membrane, which shows the increase in the filtration-available area. The high separation efficiency of the oil/water emulsion (80%) with an improved flux recovery ratio of 65% was illustrated by the optimum blended membrane.
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Xie W, Chen M, Wei S, Huang Z, Li Z. Lignin nanoparticles-intercalated reduced graphene oxide/glass fiber composite membranes for highly efficient oil-in-water emulsions separation in harsh environment. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Electrochemical Sensing of Pb2+ and Cd2+ Ions with the Use of Electrode Modified with Carbon-Covered Halloysite and Carbon Nanotubes. Molecules 2022; 27:molecules27144608. [PMID: 35889475 PMCID: PMC9324300 DOI: 10.3390/molecules27144608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/08/2022] [Accepted: 07/16/2022] [Indexed: 02/01/2023] Open
Abstract
A novel voltammetric method for the sensitive and selective determination of cadmium and lead ions using screen-printed carbon electrodes (SPCEs) modified with carbon-deposited natural halloysite (C_Hal) and multi-walled carbon nanotubes (MWCNTs) was developed. The electrochemical properties of the proposed sensor were investigated by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV), while the morphology and structure were established by scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). A two-factorial central composite design (CCD) was employed to select the composition of the nanocomposite modifying the electrode surface. The optimal measuring parameters of differential pulse anodic stripping voltammetry (DPASV) used for quantitative analysis were established with the Nelder–Mead simplex method. In the analytical investigation of Cd(II) and Pb(II) ions by DPASV, the MWCNTs/C_Hal/Nafion/SPCE exhibited a linear response in the concentration range of 0.1–10.0 µmol L−1 (for both ions) with a detection limit of 0.0051 and 0.0106 µmol L−1 for Pb(II) and Cd(II), respectively. The proposed sensor was successfully applied for the determination of metal ions in different natural water and honey samples with recovery values of 96.4–101.6%.
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Characterization of Opto-Electrical, Electrochemical and Mechanical Behaviors of Flexible PVA/(PANI+La2CuO4)/LiClO4-PC Polymer Blend Electrolyte Films. Macromol Res 2022. [DOI: 10.1007/s13233-022-0070-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Fazullin DD, Fazullina LI, Mavrin GV. Purification of Oily Wastewater by a Dynamic Membrane with a Cellulose Acetyl Surface Layer. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s107036322113017x] [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]
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Khraisheh M, Elhenawy S, AlMomani F, Al-Ghouti M, Hassan MK, Hameed BH. Recent Progress on Nanomaterial-Based Membranes for Water Treatment. MEMBRANES 2021; 11:995. [PMID: 34940495 PMCID: PMC8709222 DOI: 10.3390/membranes11120995] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/08/2021] [Accepted: 12/15/2021] [Indexed: 11/16/2022]
Abstract
Nanomaterials have emerged as the new future generation materials for high-performance water treatment membranes with potential for solving the worldwide water pollution issue. The incorporation of nanomaterials in membranes increases water permeability, mechanical strength, separation efficiency, and reduces fouling of the membrane. Thus, the nanomaterials pave a new pathway for ultra-fast and extremely selective water purification membranes. Membrane enhancements after the inclusion of many nanomaterials, including nanoparticles (NPs), two-dimensional (2-D) layer materials, nanofibers, nanosheets, and other nanocomposite structural materials, are discussed in this review. Furthermore, the applications of these membranes with nanomaterials in water treatment applications, that are vast in number, are highlighted. The goal is to demonstrate the significance of nanomaterials in the membrane industry for water treatment applications. It was found that nanomaterials and nanotechnology offer great potential for the advancement of sustainable water and wastewater treatment.
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Affiliation(s)
- Majeda Khraisheh
- Department of Chemical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar; (S.E.); (F.A.); (B.H.H.)
| | - Salma Elhenawy
- Department of Chemical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar; (S.E.); (F.A.); (B.H.H.)
| | - Fares AlMomani
- Department of Chemical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar; (S.E.); (F.A.); (B.H.H.)
| | - Mohammad Al-Ghouti
- Environmental Sciences Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha 2713, Qatar;
| | | | - Bassim H. Hameed
- Department of Chemical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar; (S.E.); (F.A.); (B.H.H.)
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Yang S, Tang R, Dai Y, Wang T, Zeng Z, Zhang L. Fabrication of cellulose acetate membrane with advanced ultrafiltration performances and antibacterial properties by blending with HKUST-1@LCNFs. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119524] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Zhao X, Lan Y, Pan J, Wang R, Wang T, Liu L. Polyphenol-engineered superwetting membranes with wrinkled microspherical organizations for high-efficient oil/water separation. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119813] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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12
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Feng L, Gao Y, Xu Y, Dan H, Qi Y, Wang S, Yin F, Yue Q, Gao B. A dual-functional layer modified GO@SiO 2 membrane with excellent anti-fouling performance for continuous separation of oil-in-water emulsion. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126681. [PMID: 34329096 DOI: 10.1016/j.jhazmat.2021.126681] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/25/2021] [Accepted: 07/16/2021] [Indexed: 06/13/2023]
Abstract
As the most significant target of membrane separation, the inadequacy of permeability and anti-fouling frequently constrain the application of the membrane in actual oily wastewater. Herein, a novel concept of membrane surface construction was proposed to mitigate this intractable problem, using SiO2 as the support layer and graphene oxide (GO) as the isolation layer. The best co-localization proportion of the support layer (56 mg/L) and isolation layer (3.5 mg/L) was determined by the separation performance of the modified membranes for the simulated emulsion. The thin GO layer could effectively prevent contaminants from entering the membrane pores without affecting its roughness. Based on the synergistic action of the isolation layer and support layer, the GO@SiO2 membrane could well implement emulsion purification with a stable permeability (654.11 LMHB) and high separation efficiency (99.41%). The superior anti-fouling performance of the membrane ensures its long-term cycling stability, with the permeability recovery rate of 89.75% (low-density oil) and 90.41% (high-density oil) after 10 repeated cycles. The storage stability also indirectly increases its value in practical applications. More importantly, the GO@SiO2 membrane also shows great potential for industrial emulsion treatment with excellent purification and cycling stability (permeability recovery rate of 84.01%).
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Affiliation(s)
- Lidong Feng
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China
| | - Yue Gao
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China.
| | - Yan Xu
- MCC Capital Engineering and Research Incorporation Ltd., 7 Jian'an Street, Beijing Economic and Technological Development Area, Beijing 100176, PR China
| | - Hongbing Dan
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China
| | - Yuanfeng Qi
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| | | | | | - Qinyan Yue
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China.
| | - Baoyu Gao
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China
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Obaid M, Mohamed HO, Alayande AB, Kang Y, Ghaffour N, Kim IS. Facile fabrication of superhydrophilic and underwater superoleophobic nanofiber membranes for highly efficient separation of oil-in-water emulsion. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118954] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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14
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Meng H, Liang H, Xu T, Bai J, Li C. Crosslinked electrospinning membranes with contamination resistant properties for highly efficient oil–water separation. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02700-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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15
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Alquraish M, Jeng YT, Kchaou M, Munusamy Y, Abuhasel K. Development of Environment-Friendly Membrane for Oily Industrial Wastewater Filtration. MEMBRANES 2021; 11:614. [PMID: 34436377 PMCID: PMC8402021 DOI: 10.3390/membranes11080614] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 01/23/2023]
Abstract
Latex phase blending and crosslinking method was used in this research work to produce nitrile butadiene rubber-graphene oxide (NBR-GO) membranes. This fabrication technique is new and yields environmentally friendly membranes for oil-water separation. GO loading was varied from 0.5 to 2.0 part per hundred-part rubber (pphr) to study its effect on the performance of NBR-GO membrane. GO was found to alter the surface morphology of the NBR matrix by introducing creases and fold on its surface, which then increases the permeation flux and rejection rate efficiency of the membrane. X-Ray diffraction analysis proves that GO was well dispersed in the membrane due to the non-existence of GO fingerprint diffraction peak at 2θ value of 10-12° in the membrane samples. The membrane filled with 2.0 pphr GO has the capability to permeate 7688.54 Lm-2 h-1 water at operating pressure of 0.3 bar with the corresponding rejection rate of oil recorded at 94.89%. As the GO loading increases from 0.5 to 2.0 pphr, fouling on the membrane surface also increases from Rt value of 45.03% to 87.96%. However, 100% recovery on membrane performance could be achieved by chemical backwashing.
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Affiliation(s)
- Mohammed Alquraish
- Department of Mechanical Engineering, College of Engineering, University of Bisha, Bisha 67714, Saudi Arabia; (M.A.); (K.A.)
| | - Yong Tzyy Jeng
- Department of Petrochemical Eng, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Kampar 31900, Malaysia; (Y.T.J.); (Y.M.)
| | - Mohamed Kchaou
- Department of Mechanical Engineering, College of Engineering, University of Bisha, Bisha 67714, Saudi Arabia; (M.A.); (K.A.)
| | - Yamuna Munusamy
- Department of Petrochemical Eng, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Kampar 31900, Malaysia; (Y.T.J.); (Y.M.)
| | - Khaled Abuhasel
- Department of Mechanical Engineering, College of Engineering, University of Bisha, Bisha 67714, Saudi Arabia; (M.A.); (K.A.)
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Etemadi H, Afsharkia S, Zinatloo‐Ajabshir S, Shokri E. Effect of alumina nanoparticles on the antifouling properties of polycarbonate‐polyurethane blend ultrafiltration membrane for water treatment. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25764] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Habib Etemadi
- Department of Polymer Science and Engineering University of Bonab Bonab Iran
| | - Soheyla Afsharkia
- Department of Polymer Science and Engineering University of Bonab Bonab Iran
| | | | - Elham Shokri
- Department of Chemical Engineering University of Bonab Bonab Iran
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17
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Grylewicz A, Szymański K, Darowna D, Mozia S. Influence of Polymer Solvents on the Properties of Halloysite-Modified Polyethersulfone Membranes Prepared by Wet Phase Inversion. Molecules 2021; 26:2768. [PMID: 34066689 PMCID: PMC8125839 DOI: 10.3390/molecules26092768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 11/29/2022] Open
Abstract
Ultrafiltration polyethersulfone (PES) membranes were prepared by wet phase inversion. Commercial halloysite nanotubes (HNTs) in the quantities of 0.5 wt% vs. PES (15 wt%) were introduced into the casting solution containing the polymer and different solvents: N,N-dimethylformamide (DMF), N,N-dimethylacetamide (DMA), or 1-methyl-2-pyrrolidinone (NMP). The type of solvent influenced the membranes' morphology and topography, as well as permeability, separation characteristics, and antifouling and antibacterial properties. The membranes prepared using DMA exhibited the loosest cross-section structure with the thinnest skin and the roughest surface, while the densest and smoothest were the DMF-based membranes. The advanced contact angles were visibly lower in the case of the membranes prepared using DMF compared to the other solvents. The highest water permeability was observed for the DMA-based membranes, however, the most significant effect of the modification with HNTs was found for the NMP-based series. Regardless of the solvent, the introduction of HNTs resulted in an improvement of the separation properties of membranes. A noticeable enhancement of antifouling performance upon application of HNTs was found only in the case of DMF-based membranes. The study of the antibacterial properties showed that the increase in surface roughness had a positive effect on the inhibition of E. coli growth.
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Affiliation(s)
| | | | | | - Sylwia Mozia
- Department of Inorganic Chemical Technology and Environment Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, ul. Pułaskiego 10, 70-322 Szczecin, Poland; (A.G.); (K.S.); (D.D.)
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18
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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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19
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Ang MBMY, Devanadera KPO, Duena ANR, Luo ZY, Chiao YH, Millare JC, Aquino RR, Huang SH, Lee KR. Modifying Cellulose Acetate Mixed-Matrix Membranes for Improved Oil-Water Separation: Comparison between Sodium and Organo-Montmorillonite as Particle Additives. MEMBRANES 2021; 11:membranes11020080. [PMID: 33499087 PMCID: PMC7911741 DOI: 10.3390/membranes11020080] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/12/2021] [Accepted: 01/19/2021] [Indexed: 01/13/2023]
Abstract
In this study, cellulose acetate (CA) mixed-matrix membranes were fabricated through the wet-phase inversion method. Two types of montmorillonite (MMT) nanoclay were embedded separately: sodium montmorillonite (Na-MMT) and organo-montmorillonite (O-MMT). Na-MMT was converted to O-MMT through ion exchange reaction using cationic surfactant (dialkyldimethyl ammonium chloride, DDAC). Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) compared the chemical structure and composition of the membranes. Embedding either Na-MMT and O-MMT did not change the crystallinity of the CA membrane, indicating that the nanoclays were dispersed in the CA matrix. Furthermore, nanoclays improved the membrane hydrophilicity. Compared with CANa-MMT membrane, CAO-MMT membrane had a higher separation efficiency and antifouling property. At the optimum concentration of O-MMT in the CA matrix, the pure water flux reaches up to 524.63 ± 48.96 L∙m-2∙h-1∙bar-1 with over 95% rejection for different oil-in-water emulsion (diesel, hexane, dodecane, and food-oil). Furthermore, the modified membrane delivered an excellent antifouling property.
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Affiliation(s)
- Micah Belle Marie Yap Ang
- R&D Center for Membrane Technology, Department of Chemical Engineering, Chung Yuan Christian University, Taoyuan 32023, Taiwan; (Z.-Y.L.); (Y.-H.C.)
- Correspondence: (M.B.M.Y.A.); (S.-H.H.); (K.-R.L.)
| | - Kiara Pauline O. Devanadera
- School of Chemical, Biological, and Materials Engineering and Sciences, Mapúa University, Manila 1002, Philippines; (K.P.O.D.); (A.N.R.D.); (J.C.M.)
| | - Alyssa Nicole R. Duena
- School of Chemical, Biological, and Materials Engineering and Sciences, Mapúa University, Manila 1002, Philippines; (K.P.O.D.); (A.N.R.D.); (J.C.M.)
| | - Zheng-Yen Luo
- R&D Center for Membrane Technology, Department of Chemical Engineering, Chung Yuan Christian University, Taoyuan 32023, Taiwan; (Z.-Y.L.); (Y.-H.C.)
| | - Yu-Hsuan Chiao
- R&D Center for Membrane Technology, Department of Chemical Engineering, Chung Yuan Christian University, Taoyuan 32023, Taiwan; (Z.-Y.L.); (Y.-H.C.)
- Department of Chemical Engineering, University of Arkansas, Fayetteville, AR 72701, USA
| | - Jeremiah C. Millare
- School of Chemical, Biological, and Materials Engineering and Sciences, Mapúa University, Manila 1002, Philippines; (K.P.O.D.); (A.N.R.D.); (J.C.M.)
| | - Ruth R. Aquino
- General Education Department, Colegio de Muntinlupa, Mayor J. Posadas Avenue, Sucat, Muntinlupa City 1770, Metro Manila, Philippines;
| | - Shu-Hsien Huang
- R&D Center for Membrane Technology, Department of Chemical Engineering, Chung Yuan Christian University, Taoyuan 32023, Taiwan; (Z.-Y.L.); (Y.-H.C.)
- Department of Chemical and Materials Engineering, National Ilan University, Yilan 26047, Taiwan
- Correspondence: (M.B.M.Y.A.); (S.-H.H.); (K.-R.L.)
| | - Kueir-Rarn Lee
- R&D Center for Membrane Technology, Department of Chemical Engineering, Chung Yuan Christian University, Taoyuan 32023, Taiwan; (Z.-Y.L.); (Y.-H.C.)
- Research Center for Circular Economy, Chung Yuan Christian University, Taoyuan 32023, Taiwan
- Correspondence: (M.B.M.Y.A.); (S.-H.H.); (K.-R.L.)
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