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Kosmulski M. The pH dependent surface charging and points of zero charge. X. Update. Adv Colloid Interface Sci 2023; 319:102973. [PMID: 37573830 DOI: 10.1016/j.cis.2023.102973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/15/2023]
Abstract
Surfaces are often characterized by their points of zero charge (PZC) and isoelectric points (IEP). Different authors use these terms for different quantities, which may be equal to the actual PZC under certain conditions. Several popular methods lead to results which are inappropriately termed PZC. This present review is limited to zero-points obtained in the presence of inert electrolytes (halides, nitrates, and perchlorates of the 1st group metals). IEP are reported for all kinds of materials. PZC of metal oxides obtained as common intersection points of potentiometric curves for 3 or more ionic strengths (or by means of equivalent methods) are also reported, while the apparent PZC obtained by mass titration, pH-drift method, etc. are deliberately neglected. The results published in the recent publications and older results overlooked in the previous compilations by the same author are reported. The PZC/IEP are accompanied by information on the temperature and on the nature and concentration of supporting electrolyte (if available). The references to previous reviews by the same author allow to compare the newest results with the PZC/IEP of similar materials from the older literature.
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Affiliation(s)
- Marek Kosmulski
- Lublin University of Technology, Nadbystrzycka 38, PL-20618 Lublin, Poland.
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2
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Romero V, Gelde L, Benavente J. Electrochemical Characterization of Charged Membranes from Different Materials and Structures via Membrane Potential Analysis. MEMBRANES 2023; 13:739. [PMID: 37623800 PMCID: PMC10456455 DOI: 10.3390/membranes13080739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/02/2023] [Accepted: 08/11/2023] [Indexed: 08/26/2023]
Abstract
Electrochemical characterization of positively and negatively charged membranes is performed by analyzing membrane potential values on the basis of the Teorell-Meyer-Sievers (TMS) model. This analysis allows the separate estimation of Donnan (interfacial effects) and diffusion (differences in ions transport through the membrane) contributions, and it permits the evaluation of the membrane's effective fixed charge concentration and the transport number of the ions in the membrane. Typical ion-exchange commercial membranes (AMX, Ionics or Nafion) are analyzed, though other experimental and commercial membranes, which are derived from different materials and have diverse structures (dense, swollen or nanoporous structures), are also considered. Moreover, for some membranes, changes associated with different modifications and other effects (concentration gradient or level, solution stirring, etc.) are also analyzed.
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Affiliation(s)
| | | | - Juana Benavente
- Departamento de Física Aplicada I, Facultad de Ciencia, Universidad de Málaga, 29071 Málaga, Spain; (V.R.); (L.G.)
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3
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Parlani M, Bedell ML, Mikos AG, Friedl P, Dondossola E. Dissecting the recruitment and self-organization of αSMA-positive fibroblasts in the foreign body response. SCIENCE ADVANCES 2022; 8:eadd0014. [PMID: 36542704 PMCID: PMC9770965 DOI: 10.1126/sciadv.add0014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 11/05/2022] [Indexed: 06/17/2023]
Abstract
The foreign body response (FBR) is a clinically relevant issue that can cause malfunction of implanted medical devices by fibrotic encapsulation. Whereas inflammatory aspects of the FBR have been established, underlying fibroblast-dependent mechanisms remain unclear. We here combine multiphoton microscopy with ad hoc reporter mice expressing α-smooth muscle actin (αSMA) protein to determine the locoregional fibroblast dynamics, activation, and fibrotic encapsulation of polymeric materials. Fibroblasts invaded as individual cells and established a multicellular network, which transited to a two-compartment fibrotic response displaying an αSMA cold external capsule and a long-lasting, inner αSMA hot environment. The recruitment of fibroblasts and extent of fibrosis were only incompletely inhibited after depletion of macrophages, implicating coexistence of macrophage-dependent and macrophage-independent mediators. Furthermore, neither altering material type or porosity modulated αSMA+ cell recruitment and distribution. This identifies fibroblast activation and network formation toward a two-compartment FBR as a conserved, self-organizing process partially independent of macrophages.
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Affiliation(s)
- Maria Parlani
- Department of Genitourinary Medical Oncology and David H. Koch Center for Applied Research of Genitourinary Cancers, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Radboud University Medical Center, Nijmegen, Netherlands
| | - Matthew L. Bedell
- Department of Bioengineering, Rice University, Houston, TX 77030, USA
| | - Antonios G. Mikos
- Department of Bioengineering, Rice University, Houston, TX 77030, USA
| | - Peter Friedl
- Department of Genitourinary Medical Oncology and David H. Koch Center for Applied Research of Genitourinary Cancers, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Radboud University Medical Center, Nijmegen, Netherlands
- Cancer Genomics Centre (CGC.nl), 3584 Utrecht, Netherlands
| | - Eleonora Dondossola
- Department of Genitourinary Medical Oncology and David H. Koch Center for Applied Research of Genitourinary Cancers, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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4
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Janus membrane with tailored upper and lower surface charges for ion penetration manipulation in high-performance nanofiltration. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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5
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Behboudi A, Mohammadi T, Ulbricht M. Fabrication and characterization of inner selective antibiofouling forward osmosis hollow fiber membranes for simultaneous wastewater treatment and desalination. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Zwitterionic analog structured ultrafiltration membranes for high permeate flux and improved anti-fouling performance. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120060] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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7
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Ismail MF, Islam MA, Khorshidi B, Tehrani-Bagha A, Sadrzadeh M. Surface characterization of thin-film composite membranes using contact angle technique: Review of quantification strategies and applications. Adv Colloid Interface Sci 2022; 299:102524. [PMID: 34620491 DOI: 10.1016/j.cis.2021.102524] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 09/17/2021] [Accepted: 09/18/2021] [Indexed: 02/08/2023]
Abstract
Thin-film composite (TFC) membranes are the most widely used membranes for low-cost and energy-efficient water desalination processes. Proper control over the three influential surface parameters, namely wettability, roughness, and surface charge, is vital in optimizing the TFC membrane surface and permeation properties. More specifically, the surface properties of TFC membranes are often tailored by incorporating novel special wettability materials to increase hydrophilicity and tune surface physicochemical heterogeneity. These essential parameters affect the membrane permeability and antifouling properties. The membrane surface characterization protocols employed to date are rather controversial, and there is no general agreement about the metrics used to evaluate the surface hydrophilicity and physicochemical heterogeneity. In this review, we surveyed and critically evaluated the process that emerged for understanding the membrane surface properties using the simple and economical contact angle analysis technique. Contact angle analysis allows the estimation of surface wettability, surface free energy, surface charge, oleophobicity, contact angle hysteresis, and free energy of interaction; all coordinatively influence the membrane permeation and fouling properties. This review will provide insights into simplifying the evaluation of membrane properties by contact angle analysis that will ultimately expedite the membrane development process by reducing the time and expenses required for the characterization to confirm the success and the impact of any modification.
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8
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Ismail E, Sha’arani SS, Azuma S, Uchikoshi T, Ichinose I. Video Processing Electrophoretic Measurements under High Electric Fields for Sub-millimeter Particles in Oil. J Oleo Sci 2022; 71:445-457. [DOI: 10.5650/jos.ess21367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Edhuan Ismail
- Research Center for Functional Materials, National Institute for Materials Science
| | | | - Shota Azuma
- Research Center for Functional Materials, National Institute for Materials Science
| | - Tetsuo Uchikoshi
- Research Center for Functional Materials, National Institute for Materials Science
| | - Izumi Ichinose
- Research Center for Functional Materials, National Institute for Materials Science
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9
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Vahdatifar S, Ali Khodadadi A, Mortazavi Y, Greenlee LF. Functionalized open-ended vertically aligned carbon nanotube composite membranes with high salt rejection and enhanced slip flow for desalination. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119773] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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10
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Li X, Nayak K, Stamm M, Tripathi BP. Zwitterionic silica nanogel-modified polysulfone nanoporous membranes formed by in-situ method for water treatment. CHEMOSPHERE 2021; 280:130615. [PMID: 33965864 DOI: 10.1016/j.chemosphere.2021.130615] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/04/2021] [Accepted: 04/15/2021] [Indexed: 06/12/2023]
Abstract
We report a simple methodology to prepare nano-porous polysulfone membranes using zwitterionic functionalized silica nanogels with high BSA protein rejection and antifouling properties. The zwitterionic silica precursor was prepared by reacting 1,3-propane sultone with 3-aminopropyl triethoxysilane under an inert atmosphere. The precursor was in situ hydrolyzed and condensed in the polysulfone nanoporous membrane network by one-pot acidic phase inversion. The prepared membranes were characterized to establish their physicochemical nature, morphology, and basic membrane properties such as permeation, rejection, and recovery. The zwitterionic membranes showed improved hydrophilicity, membrane water uptake (∼83.5%), water permeation, BSA protein rejection (>95%), and dye rejection (congo red: >52% (∼6-fold increase); methylene blue: ∼15% (∼2-fold increase)) were improved without compromising the membrane flux and fouling resistance. Overall, we report an easy fabrication method of efficient nanocomposite zwitterionic ultrafilter membranes for water treatment with excellent flux, protein separation, filtration efficiency, and antifouling behavior.
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Affiliation(s)
- Xiaojiao Li
- Department of Nanostructured Materials, Leibniz-Institut für Polymerforschung Dresden, Hohe Straße 6, 01069, Dresden, Germany; Technische Universität Dresden, Department of Chemistry, 01069, Dresden, Germany
| | - Kanupriya Nayak
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Manfred Stamm
- Department of Nanostructured Materials, Leibniz-Institut für Polymerforschung Dresden, Hohe Straße 6, 01069, Dresden, Germany; Technische Universität Dresden, Department of Chemistry, 01069, Dresden, Germany
| | - Bijay P Tripathi
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India.
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11
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Polysulfone/Polyetherimide Ultrafiltration composite membranes constructed on a three-component Nylon-fiberglass-Nylon support for azo dyes removal: Experimental and molecular dynamics simulations. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126941] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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12
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Barragán V, Villaluenga J, Izquierdo-Gil M, Kristiansen K. On the electrokinetic characterization of charged polymeric membranes by transversal streaming potential. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Benkhaya S, Lgaz H, Alrashdi AA, M'rabet S, El Bachiri A, Assouag M, Chung IM, El Harfi A. Upgrading the performances of polysulfone/polyetherimide ultrafiltration composite membranes for dyes removal: Experimental and molecular dynamics studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115743] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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14
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Li N, Guo C, Shi H, Xu Z, Xu P, Teng K, Shan M, Qian X. Analysis of Mg 2+/Li + separation mechanism by charged nanofiltration membranes: visual simulation. NANOTECHNOLOGY 2021; 32:085703. [PMID: 33176292 DOI: 10.1088/1361-6528/abc98b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The mechanism of the nanofiltration (NF) membrane separation of Mg2+ and Li+ needs to be further investigated, but some commonly used model theories are abstract, which makes them difficult to understand. More importantly, the relationship between the membrane charge and separation performance of Mg2+ and Li+ cannot be quantitatively analyzed. It is worth studying these challenges and providing a performance boost for Mg2+/Li+ filtration applications of NF membranes. Here, various NF membranes, with the membrane volumetric charge density increasing from -4.69 to 7.02 mol · m-3, were fabricated via interfacial polymerization. For these membranes, the separation factor S Mg,Li was decreased from 0.41 to 0.20. Importantly, the visual simulation results were consistent with the experimental results as a whole. The separation factor S Mg,Li decreased with the increase of volumetric charge density, and the minimum separation factor S Mg,Li of the NF membranes was 0.20 (experiment) and 0.17 (simulation), respectively. This meant that the performance of the positively charged NF membrane was not fully developed. Furthermore, we analyzed the relationship between the membrane charge and separation performance, and visualized the simulation of the NF membrane filtration and separation.
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Affiliation(s)
- Nan Li
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textiles Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
| | - Changsheng Guo
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textiles Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
| | - Haiting Shi
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textiles Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
| | - Zhiwei Xu
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textiles Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
| | - Ping Xu
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textiles Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
| | - Kunyue Teng
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textiles Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
| | - Mingjing Shan
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textiles Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
| | - Xiaoming Qian
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textiles Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
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15
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Elshaarawy RFM, Abd El-Aal RM, Mustafa FHA, Borai AE, Schmidt S, Janiak C. Dual ionic liquid-based crosslinked chitosan for fine-tuning of antifouling, water throughput, and denitrification performance of polysulfone membrane. Int J Biol Macromol 2020; 170:572-582. [PMID: 33385455 DOI: 10.1016/j.ijbiomac.2020.12.186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 12/13/2020] [Accepted: 12/23/2020] [Indexed: 11/17/2022]
Abstract
This study aimed to design a facile and efficient protocol for upgrading the performance indices of polysulfone (PS) membrane (porosity, hydrophilicity, pure water flux (PWF), surface charge, and fouling-resistance) by blending with newly synthesized poly(ionic) crosslinked chitosan Schiff bases (PICCSBs). The PS-PICCSBs mixed-matrix membranes (MMMs) have successfully fabricated and characterized based on spectral and microscopic analyses, porosity, zeta potential, water contact angle, and water uptake (wettability) measurements. The PWF, fouling-resistance against bovine serum albumin (BSA), as well as ion exchange capacity (IEC) against nitrate anion were studied. The wettability, hydrophilicity and overall porosity of new MMMs have greatly increased, in comparison to a pristine PS membrane (M0). In addition, blending of PS with PICCSBs resulted in switching its surface from negatively- to positively-charged. The PWF of MMMs has increased to reach a maximum value of 238.6 L/m2 h for MMM1 (9.3-fold higher than M0). Meanwhile, BSA rejection has declined from 96.62% for M0 to 41.9% for MMM1. The fouling parameters results of MMMs indicated their low fouling propensity. The IEC of nitrate anions revealed that the nitrate uptake by MMM1 is higher than that for M0 and MMM2 by 34% and 14%, respectively.
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Affiliation(s)
- Reda F M Elshaarawy
- Faculty of Science, Suez University, Suez, Egypt; Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf, 40204 Düsseldorf, Germany.
| | | | - Fatma H A Mustafa
- Marine Chemistry Laboratory, Marine Environment Division, National Institute of Oceanography and Fisheries (NIOF), Suez, Egypt
| | | | - Stephan Schmidt
- Department of Colloidal Adhesion, Organic and Macromolecular Chemistry Institute, Heinrich-Heine Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf, 40204 Düsseldorf, Germany
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Soltannia B, Islam MA, Cho JY, Mohammadtabar F, Wang R, Piunova VA, Almansoori Z, Rastgar M, Myles AJ, La YH, Sadrzadeh M. Thermally stable core-shell star-shaped block copolymers for antifouling enhancement of water purification membranes. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117686] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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17
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Shaban M, AbdAllah H, Said L, Ahmed AM. Water desalination and dyes separation from industrial wastewater by PES/TiO2NTs mixed matrix membranes. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1831-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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18
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Zhang X, Xie M, Yang Z, Wu HC, Fang C, Bai L, Fang LF, Yoshioka T, Matsuyama H. Antifouling Double-Skinned Forward Osmosis Membranes by Constructing Zwitterionic Brush-Decorated MWCNT Ultrathin Films. ACS APPLIED MATERIALS & INTERFACES 2019; 11:19462-19471. [PMID: 31071260 DOI: 10.1021/acsami.9b03259] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Pressure retarded osmosis (PRO) process is hindered by severe fouling occurring within the porous support of the forward osmosis (FO) membranes. We designed a novel double-skinned FO membrane containing a polyamide salt-rejecting layer and a zwitterionic brush-decorated, multiwalled carbon nanotube (MWCNT/PSBMA) foulant-resisting layer on the back side. Our results demonstrated that the coating of the MWCNT/PSBMA layer on the porous polyketone (PK) support imparted enhanced hydrophilicity and smaller membrane pore size, thereby providing excellent resistance toward both protein adhesion and bacterial adsorption. We also further evaluated this resultant double-skinned membrane (i.e., TFC-MWCNT/PSBMA) in dynamic PRO fouling experiments using protein and alginate as model organic foulants. Compared to the pristine TFC-PK and hydrophobic TFC-MWCNT membranes, the TFC-MWCNT/PSBMA membrane exhibited not only the lowest water flux decline but also the highest water flux recovery after simple physical flushing. These results shed light on fabrication of antifouling PRO membranes for water purification purposes.
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Affiliation(s)
- Xinyu Zhang
- Center for Membrane and Film Technology, Department of Chemical Science and Engineering , Kobe University , Kobe 6578501 , Japan
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
| | - Ming Xie
- Department of Chemical Engineering , University of Bath , Bath BA27AY , U.K
| | - Zhe Yang
- Center for Membrane and Film Technology, Department of Chemical Science and Engineering , Kobe University , Kobe 6578501 , Japan
| | - Hao-Chen Wu
- Center for Membrane and Film Technology, Department of Chemical Science and Engineering , Kobe University , Kobe 6578501 , Japan
| | - Chuanjie Fang
- Center for Membrane and Film Technology, Department of Chemical Science and Engineering , Kobe University , Kobe 6578501 , Japan
| | - Langming Bai
- State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin 150090 , P. R. China
| | - Li-Feng Fang
- Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , P. R. China
| | - Tomohisa Yoshioka
- Center for Membrane and Film Technology, Department of Chemical Science and Engineering , Kobe University , Kobe 6578501 , Japan
| | - Hideto Matsuyama
- Center for Membrane and Film Technology, Department of Chemical Science and Engineering , Kobe University , Kobe 6578501 , Japan
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19
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Najjar A, Sabri S, Al-Gaashani R, Atieh MA, Kochkodan V. Antibiofouling Performance by Polyethersulfone Membranes Cast with Oxidized Multiwalled Carbon Nanotubes and Arabic Gum. MEMBRANES 2019; 9:membranes9020032. [PMID: 30813347 PMCID: PMC6410110 DOI: 10.3390/membranes9020032] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 02/15/2019] [Accepted: 02/17/2019] [Indexed: 12/07/2022]
Abstract
Despite extensive research efforts focusing on tackling membrane biofouling, one of the biggest problems associated with membrane technology, there has been little headway in this area. This study presents novel polyethersulfone (PES) membranes synthesized via a phase inversion method at incremental loadings of functionalized oxidized multiwalled carbon nanotubes (OMWCNT) along with 1 wt. % arabic gum (AG). The synthesized OMWCNT were examined using scanning electron microscopy and transmission electron microscopy for morphological changes compared to the commercially obtained carbon nanotubes. Additionally energy-dispersive X-ray spectroscopy was carried out on the raw and OMWCNT materials, indicating an almost 2-fold increase in oxygen content in the latter sample. The cast PES/OMWCNT membranes were extensively characterized, and underwent a series of performance testing using bovine serum albumin solution for fouling tests and model Gram-positive (Bacillus subtilis) and Gram-negative (Escherichia coli) bacterial species for anti-biofouling experiments. Results indicated that the composite PES membranes, which incorporated the OMWCNT and AG, possessed significantly stronger hydrophilicity and negative surface charge as evidenced by water contact angle and zeta potential data, respectively, when compared to plain PES membranes. Furthermore atomic force microscopy analysis showed that the PES/OMWCNT membranes exhibited significantly lower surface roughness values. Together, these membrane surface features were held responsible for the anti-adhesive nature of the hybrid membranes seen during biofouling tests. Importantly, the prepared membranes were able to inhibit bacterial colonization upon incubation with both Gram-positive and Gram-negative bacterial suspensions. The PES/OMWCNT membranes also presented more resilient normalized flux values when compared to neat PES and commercial membrane samples during filtration of both bacterial suspensions and real treated sewage effluents. Taken together, the results of this study allude to OMWCNT and AG as promising additives, for incorporation into polymeric membranes to enhance biofouling resistance.
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Affiliation(s)
- Ahmad Najjar
- College of Life and Health Sciences, Hamad Bin Khalifa University (HBKU), P.O. Box 34110 Doha, Qatar.
| | - Souhir Sabri
- Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), P.O. Box 34110 Doha, Qatar.
| | - Rashad Al-Gaashani
- Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), P.O. Box 34110 Doha, Qatar.
| | - Muataz Ali Atieh
- Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), P.O. Box 34110 Doha, Qatar.
| | - Viktor Kochkodan
- Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), P.O. Box 34110 Doha, Qatar.
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Enhanced Fouling Resistance and Antibacterial Properties of Novel Graphene Oxide-Arabic Gum Polyethersulfone Membranes. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9030513] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Membrane biofouling has proved to be a major obstacle when it comes to membrane efficiency in membrane-based water treatment. Solutions to this problem remain elusive. This study presents novel polyethersulfone (PES) membranes that are fabricated using the phase inversion method at different loadings of graphene oxide (GO) and 1 wt. % arabic gum (AG) as nanofiller and pore forming agents. Synthesized GO was examined using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) for morphological studies and energy-dispersive X-ray spectroscopy (EDX) for elemental analysis. The prepared GO flakes showed a high content of oxygen-containing groups (~31%). The fabricated membranes were extensively characterized, including water contact angle analysis for hydrophilicity, zeta potential measurements for surface charge, SEM, total porosity and pore size measurements. The prepared membranes underwent fouling tests using bovine serum albumin (BSA) solutions and biofouling tests using model Gram-positive (Bacillus subtilis) and Gram-negative (Escherichia coli) bacterial suspensions as well as real treated sewage effluent (TSE). The results showed that the novel PES/GO membranes possessed strong hydrophilicity and negative surface charge with an increase in porosity, pore size and water flux. The PES/GO membranes exhibited superior antibacterial action against both Gram-positive and Gram-negative bacterial species, implicating PES membranes which incorporate GO and AG as novel membranes that are capable of high antibiofouling properties with high flux.
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Size Separation Techniques for the Characterisation of Cross-Linked Casein: A Review of Methods and Their Applications. SEPARATIONS 2018. [DOI: 10.3390/separations5010014] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Surface and anti-fouling properties of a polyampholyte hydrogel grafted onto a polyethersulfone membrane. J Colloid Interface Sci 2018; 517:155-165. [PMID: 29421675 DOI: 10.1016/j.jcis.2018.01.106] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 01/25/2018] [Accepted: 01/29/2018] [Indexed: 11/23/2022]
Abstract
Zwitterion polymers have anti-fouling properties; therefore, grafting new zwitterions to surfaces, particularly as hydrogels, is one of the leading research directions for preventing fouling. Specifically, polyampholytes, polymers of random mixed charged subunits with a net-electric charge, offer a synthetically easy alternative for studying new zwitterions with a broad spectrum of charged moieties. Here, a novel polyampholyte hydrogel was grafted onto the surface of polyethersulfone membrane by copolymerizing a mixture of vinylsulfonic acid (VSA) and [2-(methacryloyloxy)ethyl]trimethylammonium chloride (METMAC) as the negatively and positively charged monomers, respectively, using various monomer ratios in the polymerization solution, and with N,N'-methylenebisacrylamide as the crosslinker. The physicochemical, morphological and anti-fouling properties of the modified membranes were systematically investigated. Hydrophilic hydrogels were successfully grafted using monomers at different molar ratios. A thin-film zwitterion hydrogel (∼90 nm) was achieved at a 3:1 [VSA:METMAC] molar ratio in the polymerization solution. Among all examined membranes, the zwitterion polyampholyte-modified membrane demonstrated the lowest adsorption of proteins, humic acid, and sodium alginate. It also had low fouling and high flux recovery following filtration with a protein or with an extracellular polymeric substance solution. These findings suggest that this polyampholyte hydrogel is applicable as a low fouling surface coating.
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23
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Michna A. Macroion adsorption-electrokinetic and optical methods. Adv Colloid Interface Sci 2017; 250:95-131. [PMID: 29055493 DOI: 10.1016/j.cis.2017.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 09/22/2017] [Accepted: 09/24/2017] [Indexed: 01/03/2023]
Abstract
Recent studies on macroion adsorption at solid/liquid interfaces evaluated by electrokinetic and optical methods are reviewed. In the first section a description of electrokinetic phenomena at a solid surface is briefly outlined. Various methods for determining both static and dynamic properties of the electrical double layer, such as the appropriate location of the slip plane, are presented. Theoretical approaches are discussed concerning quantitative interpretation of streaming potential/current measurements of homogeneous macroscopic interfaces. Experimental results are presented, involving electrokinetic characteristics of bare surfaces, such as mica, silicon, glass etc. obtained from various types of electrokinetic cells. The surface conductivity effect on zeta potential is underlined. In the next section, various theoretical approaches, proposed to determine a distribution of electrostatic potential and flow distribution within macroion layers, are presented. Accordingly, the influence of the uniform as well as non-uniform distribution of charges within macroion layer, the dissociation degree, and the surface conductance on electrokinetic parameters are discussed. The principles, the advantages and limits of optical techniques as well as AFM are briefly outlined in Section 4. The last section is devoted to the discussion of experimental data obtained by streaming potential/current measurements and optical methods, such as reflectometry, ellipsometry, surface plasmon resonance (SPR), optical waveguide lightmode spectroscopy (OWLS), colloid enhancement, and fluorescence technique, for mono- and multilayers of macroions. Results of polycations (PEI, PAMAM dendrimers, PAH, PDADMAC) and polyanions (PAA, PSS) adsorption on mica, silicon, gold, and PTFE are quantitatively interpreted in terms of theoretical approaches postulating the three dimensional charge distribution or the random sequential adsorption model (RSA). Macroion bilayer formation, experimentally examined by streaming current measurements, and theoretically interpreted in terms of the comprehensive formalism is also reviewed. The utility of electrokinetic measurements, combined with optical methods, for a precise, in situ characteristics of macroion mono- and multilayer formation at solid/liquid interfaces is pointed out.
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Song X, Zambare RS, Qi S, Sowrirajalu BN, James Selvaraj AP, Tang CY, Gao C. Charge-Gated Ion Transport through Polyelectrolyte Intercalated Amine Reduced Graphene Oxide Membranes. ACS APPLIED MATERIALS & INTERFACES 2017; 9:41482-41495. [PMID: 29111656 DOI: 10.1021/acsami.7b13724] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Charge-gated channels are nature's solutions for transport of water molecules and ions through aquaporins in biological membranes while excluding undesired substances. The same mechanism has good potentials to be adopted in pressure or electrically driven membrane separation processes. Herein, we report highly charged nanochannels created in polyelectrolyte (PE) intercalated amine reduced graphene oxide membrane (PE@ArGO membrane). The PE@ArGO membrane, with a rejection layer of ∼160 nm in thickness, features a laminate structure and a smooth top surface of a low roughness (typically ∼17.2 nm). Further, a modified PE@ArGO membrane (mPE@ArGO membrane) was developed in situ using free chlorine scavenging post-treatment method, which was designed to alter the charge while keeping alteration to the layered structure minimal. The surface charge of the PE@ArGO and mPE@ArGO membrane was +4.37 and -4.28 mC/m2 respectively. In pressure driven processes, the pure water permeability for PE@ArGO and mPE@ArGO was 2.9 and 10.8 L m-2 h-1 bar-1, respectively. Salt rejection is highly dependent on the charge density of the membrane surface, the valence of the co-ions and the size of ions in hydrated form. For example, in the positively charged PE@ArGO membranes, the rejection of the salts follows the order of: R(MgCl2), 93.0% > R(NaCl), 88.2% ≈ R(MgSO4), 88.1% > R(Na2SO4), 65.1%; while in the negatively charged mPE@ArGO membranes, the rejection of the salts follows the order of: R(Na2SO4), 90.3% > R(NaCl), 85.4% > R(MgSO4), 68.3% > R(MgCl2), 42.9%. To the best knowledge of the authors, this is the first study to report graphene oxide based membranes (GOBMs) with high density positive/negative charge gated ion transport behavior. What's more, the high rejection rate along with high water permeability of the PE@ArGO and mPE@ArGO membranes has not been achieved by other types of GOBMs.
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Affiliation(s)
- Xiaoxiao Song
- Centre for Membrane and Water Science and Technology, Ocean College, Zhejiang University of Technology , Hangzhou, 310014, China
| | - Rahul S Zambare
- Environmental and Water Technology Centre of Innovation (EWTCOI), Ngee Ann Polytechnic , 599489, Singapore
| | - Saren Qi
- Singapore Membrane Technology Center, Nanyang Technological University , 639798, Singapore
| | - Bhuvana Nil Sowrirajalu
- Environmental and Water Technology Centre of Innovation (EWTCOI), Ngee Ann Polytechnic , 599489, Singapore
| | | | - Chuyang Y Tang
- The University of Hong Kong, Department of Civil Engineering , Pokfulam, Hong Kong
| | - Congjie Gao
- Centre for Membrane and Water Science and Technology, Ocean College, Zhejiang University of Technology , Hangzhou, 310014, China
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Manawi Y, Kochkodan V, Mahmoudi E, Johnson DJ, Mohammad AW, Atieh MA. Characterization and Separation Performance of a Novel Polyethersulfone Membrane Blended with Acacia Gum. Sci Rep 2017; 7:15831. [PMID: 29158521 PMCID: PMC5696536 DOI: 10.1038/s41598-017-14735-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 10/13/2017] [Indexed: 12/07/2022] Open
Abstract
Novel polyethersulfone (PES) membranes blended with 0.1-3.0 wt. % of Acacia gum (AG) as a pore-former and antifouling agent were fabricated using phase inversion technique. The effect of AG on the pore-size, porosity, surface morphology, surface charge, hydrophilicity, and mechanical properties of PES/AG membranes was studied by scanning electron microscopy (SEM), Raman spectroscopy, contact angle and zeta potential measurements. The antifouling -properties of PES/AG membranes were evaluated using Escherichia coli bacteria and bovine serum albumine (BSA). The use of AG as an additive to PES membranes was found to increase the surface charge, hydrophilicity (by 20%), porosity (by 77%) and permeate flux (by about 130%). Moreover, PES/AG membranes demonstrated higher antifouling and tensile stress (by 31%) when compared to pure PES membranes. It was shown that the prepared PES/AG membranes efficiently removed lead ions from aqueous solutions. Both the sieving mechanism of the membrane and chelation of lead with AG macromolecules incorporated in the membrane matrix contributed to lead removal. The obtained results indicated that AG can be used as a novel pore-former, hydrophilizing and antifouling agent, as well as an enhancer to the mechanical and rejection properties of the PES membranes.
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Affiliation(s)
- Yehia Manawi
- Qatar Environment and Energy Research Institute (QEERI), Hamad bin Khalifa University (HBKU), Qatar Foundation, Doha, Qatar
- College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, PO Box, 5825, Doha, Qatar
| | - Viktor Kochkodan
- Qatar Environment and Energy Research Institute (QEERI), Hamad bin Khalifa University (HBKU), Qatar Foundation, Doha, Qatar
- College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, PO Box, 5825, Doha, Qatar
| | - Ebrahim Mahmoudi
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor Darul Ehsan, Malaysia
| | - Daniel J Johnson
- College of Engineering, Swansea University, Bay campus Swansea, SA1 8PP, Wales, United Kingdom
| | - Abdul Wahab Mohammad
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor Darul Ehsan, Malaysia
| | - Muataz Ali Atieh
- Qatar Environment and Energy Research Institute (QEERI), Hamad bin Khalifa University (HBKU), Qatar Foundation, Doha, Qatar.
- College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, PO Box, 5825, Doha, Qatar.
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26
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Arsalan M, Khan MA, Alam F, Oves M. PVC-supported SP composite membrane: its synthesis, physicochemical, and electrochemical characterization. J Solid State Electrochem 2017. [DOI: 10.1007/s10008-017-3646-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Pal A, Dey TK, Debnath AK, Bhushan B, Sahu AK, Bindal RC, Kar S. Mixed-matrix membranes with enhanced antifouling activity: probing the surface-tailoring potential of Tiron and chromotropic acid for nano-TiO 2. ROYAL SOCIETY OPEN SCIENCE 2017; 4:170368. [PMID: 28989744 PMCID: PMC5627084 DOI: 10.1098/rsos.170368] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 08/07/2017] [Indexed: 06/07/2023]
Abstract
Mixed-matrix membranes (MMMs) were developed by impregnating organofunctionalized nanoadditives within fouling-susceptible polysulfone matrix following the non-solvent induced phase separation (NIPS) method. The facile functionalization of nanoparticles of anatase TiO2 (nano-TiO2) by using two different organoligands, viz. Tiron and chromotropic acid, was carried out to obtain organofunctionalized nanoadditives, FT-nano-TiO2 and FC-nano-TiO2, respectively. The structural features of nanoadditives were evaluated by X-ray diffraction, X-ray photoelectron spectroscopy, Raman and Fourier transform infrared spectroscopy, which established that Tiron leads to the blending of chelating and bridging bidentate geometries for FT-nano-TiO2, whereas chromotropic acid produces bridging bidentate as well as monodentate geometries for FC-nano-TiO2. The surface chemistry of the studied membranes, polysulfone (Psf): FT-nano-TiO2 UF and Psf: FC-nano-TiO2 UF, was profoundly influenced by the benign distributions of the nanoadditives enriched with distinctly charged sites ([Formula: see text]), as evidenced by superior morphology, improved topography, enhanced surface hydrophilicity and altered electrokinetic features. The membranes exhibited enhanced solvent throughputs, viz. 3500-4000 and 3400-4300 LMD at 1 bar of transmembrane pressure, without significant compromise in their rejection attributes. The flux recovery ratios and fouling resistive behaviours of MMMs towards bovine serum albumin indicated that the nanoadditives could impart stable and appreciable antifouling activity, potentially aiding in a sustainable ultrafiltration performance.
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Affiliation(s)
- Avishek Pal
- Membrane Development Section, Chemical Engineering Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Trombay, Mumbai 400094, India
| | - T. K. Dey
- Membrane Development Section, Chemical Engineering Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - A. K. Debnath
- Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Trombay, Mumbai 400094, India
| | - Bharat Bhushan
- Membrane Development Section, Chemical Engineering Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Trombay, Mumbai 400094, India
| | - A. K. Sahu
- Glass and Advanced Materials Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - R. C. Bindal
- Membrane Development Section, Chemical Engineering Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Trombay, Mumbai 400094, India
| | - Soumitra Kar
- Membrane Development Section, Chemical Engineering Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Trombay, Mumbai 400094, India
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28
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He Z, Kasemset S, Kirschner AY, Cheng YH, Paul DR, Freeman BD. The effects of salt concentration and foulant surface charge on hydrocarbon fouling of a poly(vinylidene fluoride) microfiltration membrane. WATER RESEARCH 2017; 117:230-241. [PMID: 28412584 DOI: 10.1016/j.watres.2017.03.051] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 12/21/2016] [Accepted: 03/25/2017] [Indexed: 06/07/2023]
Abstract
The effects of inorganic salts and organic hydrocarbons on membrane fouling are often investigated independently. However, in many cases, these foulants are commonly found together, and such mixtures are rarely the subject of fouling studies. In this study, crude oil-in-water emulsions were formulated at three different added NaCl concentrations, 0, 10-3 and 10-1 M. Surface properties, such as surface tension and surface charge, of these emulsions and a poly(vinylidene fluoride) (PVDF) microfiltration (MF) membrane were characterized. The Derjaguin-Landau-Verwey-Overbeek (DLVO) model was utilized to simulate membrane-oil droplet and oil layer-oil droplet surface interactions. The DLVO model qualitatively predicted increasing fouling propensity with increasing emulsion salt concentration. The PVDF MF membrane was challenged with crude oil-in-water emulsions in constant permeate flux crossflow fouling tests to characterize the fouling propensity of the various emulsions, and the results were consistent with the model predictions.
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Affiliation(s)
- Zhengwang He
- Department of Chemical Engineering, Center for Energy and Environmental Resources, and Texas Materials Institute, The University of Texas at Austin, 10100 Burnet Road Building 133, Austin, TX 78758, United States
| | - Sirirat Kasemset
- Department of Chemical Engineering, Center for Energy and Environmental Resources, and Texas Materials Institute, The University of Texas at Austin, 10100 Burnet Road Building 133, Austin, TX 78758, United States
| | - Alon Y Kirschner
- Department of Chemical Engineering, Center for Energy and Environmental Resources, and Texas Materials Institute, The University of Texas at Austin, 10100 Burnet Road Building 133, Austin, TX 78758, United States
| | - Yu-Heng Cheng
- Department of Chemical Engineering, Center for Energy and Environmental Resources, and Texas Materials Institute, The University of Texas at Austin, 10100 Burnet Road Building 133, Austin, TX 78758, United States
| | - Donald R Paul
- Department of Chemical Engineering, Center for Energy and Environmental Resources, and Texas Materials Institute, The University of Texas at Austin, 10100 Burnet Road Building 133, Austin, TX 78758, United States
| | - Benny D Freeman
- Department of Chemical Engineering, Center for Energy and Environmental Resources, and Texas Materials Institute, The University of Texas at Austin, 10100 Burnet Road Building 133, Austin, TX 78758, United States.
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29
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Manawi Y, Kochkodan V, Mohammad A, Ali Atieh M. Arabic gum as a novel pore-forming and hydrophilic agent in polysulfone membranes. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.02.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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30
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Mudalige TK, Qu H, Linder SW. Rejection of Commonly Used Electrolytes in Asymmetric Flow Field Flow Fractionation: Effects of Membrane Molecular Weight Cutoff Size, Fluid Dynamics, and Valence of Electrolytes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:1442-1450. [PMID: 28098465 DOI: 10.1021/acs.langmuir.6b03749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Asymmetric flow field flow fractionation (AF4) is an efficient size-based separation technique for the characterization of submicron size particulates. In AF4, membranes having various molecular weight cutoff sizes are used as a barrier to retain particles while allowing the carrier fluid containing electrolytes to permeate. Here, we have hypothesized that electrolyte rejection by the barrier membrane leads to the accumulation of electrolytes in the channel during operation. Electrolyte accumulation can cause various adverse effects that can lead to membrane fouling. An instrument setup containing a conductivity detector was assembled, and the rejection of commonly used carrier electrolytes such as trisodium citrate, ethylenediaminetetraacetic acid, sodium chloride, and ammonium carbonate was evaluated by varying the concentration, cross-flow rate, focusing flow rate, membrane material type, and cutoff sizes. The results showed that electrolyte rejection increased with a decrease in the electrolyte concentration and the molecular weight cutoff size (pore size) or with an increase in the charge state of the anion in the carrier electrolytes. We proposed an electrostatic repulsion-based rejection mechanism and verified it with the measurement of the rejection rate while varying the electrolyte concentration in the running media.
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Affiliation(s)
- Thilak K Mudalige
- Office of Regulatory Affairs, Arkansas Regional Laboratory, U.S. Food and Drug Administration , 3900 NCTR Road, Jefferson, Arkansas 72079, United States
| | - Haiou Qu
- Office of Regulatory Affairs, Arkansas Regional Laboratory, U.S. Food and Drug Administration , 3900 NCTR Road, Jefferson, Arkansas 72079, United States
| | - Sean W Linder
- Office of Regulatory Affairs, Arkansas Regional Laboratory, U.S. Food and Drug Administration , 3900 NCTR Road, Jefferson, Arkansas 72079, United States
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31
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Thomas TE, Aani SA, Oatley-Radcliffe DL, Williams PM, Hilal N. Laser Doppler Electrophoresis and electro-osmotic flow mapping: A novel methodology for the determination of membrane surface zeta potential. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.10.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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32
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Membrane Functionalization with Hyperbranched Polymers. MATERIALS 2016; 9:ma9080706. [PMID: 28773828 PMCID: PMC5512528 DOI: 10.3390/ma9080706] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 08/10/2016] [Accepted: 08/15/2016] [Indexed: 11/16/2022]
Abstract
Polymer membranes have been modified with hyperbranched polymers with the aim to generate a high density of hydrophilic functional groups at the membrane surface. For this purpose hyperbranched polymers containing amino, alcohol, and carboxylic acid end groups were used for membrane modification, respectively. Thus, surface potential and charges were changed significantly to result in attractive or repulsive interactions towards three different proteins (albumin, lysozyme, myoglobin) that were used to indicate membrane fouling properties. Our studies demonstrated that hydrophilization alone is not effective for avoiding membrane fouling when charged proteins are present. In contrast, electrostatic repulsion seems to be a general key factor.
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33
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Floris R, Nijmeijer K, Cornelissen ER. Removal of aqueous nC60 fullerene from water by low pressure membrane filtration. WATER RESEARCH 2016; 91:115-125. [PMID: 26773485 DOI: 10.1016/j.watres.2015.10.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 08/31/2015] [Accepted: 10/11/2015] [Indexed: 06/05/2023]
Abstract
The potential environmental and health risks of engineered nanoparticles such as buckminsterfullerene C60 in water require their removal during the production of drinking water. We present a study focusing on (i) the removal mechanism and (ii) the elucidation of the role of the membrane pore size during removal of nC60 fullerene nanoparticle suspensions in dead-end microfiltration and ultrafiltration mimicking separation in real industrial water treatment plants. Membranes were selected with pore sizes ranging from 18 nm to 500 nm to determine the significance of the nC60 to membrane pore size ratio and the adsorption affinity between nC60 and membrane material during filtration. Experiments were carried out with a dead-end bench-scale system operated at constant flux conditions including a hydraulic backwash cleaning procedure. nC60 nanoparticles can be efficiently removed by low pressure membrane technology with smaller and, unexpectedly, also by mostly similar or larger pores than the particle size, although the nC60 filtration behaviour appeared to be different. The nC60 size to membrane pore size ratio and the ratio of the cake-layer deposition resistance to the clean membrane resistance, both play an important role on the nC60 filtration behaviour and on the efficiency of the backwash procedure recovering the initial membrane filtration conditions. These results become specifically significant in the context of drinking water production, for which they provide relevant information for an accurate selection between membrane processes and operational parameters for the removal of nC60 in the drinking water treatment.
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Affiliation(s)
- R Floris
- KWR Watercycle Research Institute, PO Box 1072, 3430 BB Nieuwegein, The Netherlands; Membrane Science & Technology, University of Twente, Mesa+ Institute for Nanotechnology, PO Box 217, Enschede 7500 AE, The Netherlands
| | - K Nijmeijer
- Membrane Science & Technology, University of Twente, Mesa+ Institute for Nanotechnology, PO Box 217, Enschede 7500 AE, The Netherlands
| | - E R Cornelissen
- KWR Watercycle Research Institute, PO Box 1072, 3430 BB Nieuwegein, The Netherlands.
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34
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Yang G, Ma Y, Xing W. The effect of cation–π interactions in electrolyte/organic nanofiltration systems. Chin J Chem Eng 2016. [DOI: 10.1016/j.cjche.2015.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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35
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Imparting antimicrobial and anti-adhesive properties to polysulfone membranes through modification with silver nanoparticles and polyelectrolyte multilayers. J Colloid Interface Sci 2015; 451:125-33. [DOI: 10.1016/j.jcis.2015.03.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 03/26/2015] [Accepted: 03/27/2015] [Indexed: 01/23/2023]
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36
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Natural organic matter interactions with polyamide and polysulfone membranes: Formation of conditioning film. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.03.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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37
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Microscopical characterizations of nanofiltration membranes for the removal of nickel ions from aqueous solution. KOREAN J CHEM ENG 2015. [DOI: 10.1007/s11814-014-0290-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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38
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Mudalige TK, Qu H, Sánchez-Pomales G, Sisco PN, Linder SW. Simple Functionalization Strategies for Enhancing Nanoparticle Separation and Recovery with Asymmetric Flow Field Flow Fractionation. Anal Chem 2015; 87:1764-72. [DOI: 10.1021/ac503683n] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Thilak K. Mudalige
- Office
of Regulatory Affairs, Arkansas
Regional Laboratory, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, Arkansas 72079, United States
| | - Haiou Qu
- Office
of Regulatory Affairs, Arkansas
Regional Laboratory, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, Arkansas 72079, United States
| | - Germarie Sánchez-Pomales
- Office
of Regulatory Affairs, Arkansas
Regional Laboratory, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, Arkansas 72079, United States
| | - Patrick N. Sisco
- Office
of Regulatory Affairs, Arkansas
Regional Laboratory, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, Arkansas 72079, United States
| | - Sean W. Linder
- Office
of Regulatory Affairs, Arkansas
Regional Laboratory, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, Arkansas 72079, United States
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39
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Self-sustained electro-spun polysulfone nano-fibrous membranes and their surface modification by interfacial polymerization for micro- and ultra-filtration. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2014.10.010] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Kezia K, Lee J, Ogieglo W, Hill A, Benes NE, Kentish SE. The transport of hydronium and hydroxide ions through reverse osmosis membranes. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.02.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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41
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Runyon JR, Ulmius M, Nilsson L. A perspective on the characterization of colloids and macromolecules using asymmetrical flow field-flow fractionation. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2013.04.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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42
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Maruf SH, Rickman M, Wang L, Mersch IV J, Greenberg AR, Pellegrino J, Ding Y. Influence of sub-micron surface patterns on the deposition of model proteins during active filtration. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.05.060] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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43
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44
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Bernstein R, Antón E, Ulbricht M. Tuning the nanofiltration performance of thin film strong polyelectrolyte hydrogel composite membranes by photo-grafting conditions. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2012.09.034] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Tu CH, Wang HL, Wang XL. Study on transmembrane electrical potential of nanofiltration membranes in KCl and MgCl2 solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:17656-17664. [PMID: 20942428 DOI: 10.1021/la102363y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The transmembrane electrical potential (TMEP) across two commercial nanofiltration membranes (ESNA1-K and Filmtec NF) was investigated in KCl and MgCl(2) solutions. TMEP was measured in a wide range of salt concentrations (1-60 mol·m(-3)) and pH values (3-10) at the feed side, with pressure differences in the range of 0.1-0.6 MPa. A two-layer model based on the Nernst-Planck equation was proposed to describe the relation between TMEP and permeation flux. From the pattern of these curves, the information of membrane structure could be deduced. In the concentration range investigated, TMEP in KCl solutions was always positive and decreased as the salt concentration increased. The contribution of the membrane potential to the TMEP decreased. TMEP was greatly affected by the feed pH. When the feed pH increased, the mobility of cations increased, which indicated that the charges of NF membranes were more negative. The zero point of TMEP and the minimum of rejection in KCl solution were consistent and occurred at the isoelectric point of NF membranes, while in MgCl(2) solution the zero point of TMEP located at a higher pH value. The TMEP in MgCl(2) solutions changed its sign at a given concentration, and by calculating the transport number the location of the minimum rejection could be determined.
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Affiliation(s)
- Cong-Hui Tu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, PR China
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Yaroshchuk A, Luxbacher T. Interpretation of electrokinetic measurements with porous films: role of electric conductance and streaming current within porous structure. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:10882-10889. [PMID: 20459082 DOI: 10.1021/la100777z] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
It is shown that in tangential electrokinetic measurements with porous films the porous structure makes contribution not only to the cell electric conductance (as demonstrated previously) but also to the observed streaming current. Both of these contributions give rise to dependences of streaming-potential and streaming-current coefficients on the channel height. However, due to the combined contribution of two phenomena, the dependence of streaming-potential coefficient on the channel height may be rather complicated and not allow for simple extrapolation. At the same time, the dependences of streaming-current coefficient and cell electric conductance on the channel height turn out linear and can be easily extrapolated to zero channel heights. This enables one to determine separately the contributions of external surface of porous film and of its porous structure to the streaming current and of the channel and porous structure to the cell electric conductance. This procedure is illustrated by the measurements of tangential electrokinetic phenomena and electric conductance with Millipore mixed-cellulose membrane filters of various average pore sizes (from 0.025 to 5 mum) in the so-called adjustable-gap cell of SurPASS electrokinetic instrument (Anton Paar GmbH). The design of this cell allows for easy and quasi-continuous variation of channel height as well as accurate determination of cell electric conductance, streaming-current coefficient, and channel height (from the cell hydraulic permeability). The quality of linear fits of experimental data has been found to be very good, and thus, the extrapolation procedures were quite reliable and accurate. Zeta-potentials could be determined of both external film and internal pore surfaces. It is demonstrated that the porous structures make considerable contributions to both streaming-current coefficient and cell electric conductance especially in the case of filters with larger pores. It is also found that, rather surprisingly, in filters with smaller pores the reduction in the filter electric conductivity turns out essentially stronger than could be expected proceeding from the filter porosity.
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Affiliation(s)
- Andriy Yaroshchuk
- ICREA and Department of Chemical Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
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Transport of salt mixtures through nanofiltration membranes: Numerical identification of electric and dielectric contributions. Sep Purif Technol 2009. [DOI: 10.1016/j.seppur.2009.07.022] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kline TR, Chen G, Walker SL. Colloidal deposition on remotely controlled charged micropatterned surfaces in a parallel-plate flow chamber. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:9381-9385. [PMID: 18656970 DOI: 10.1021/la800549e] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
This article describes a method to influence colloid deposition by varying the zeta potential at microelectrodes with remotely applied electric potentials. Deposition experiments were conducted in a parallel-plate flow chamber for bulk substrates of glass, indium tin oxide (ITO), and ITO-coated glass microelectrodes in 10 and 60 mM potassium chloride solutions. Colloid deposition was found to be a function of solution chemistry and the small locally delivered electric surface potentials. Electric fields and physical surface heterogeneity can be ruled out as cause of the observed deposition. Results are reported using experimentally determined Sherwood numbers and compared to the predictions of a previously developed patch model. Minor deviations between predicted and experimental Sherwood numbers imply that physical and chemical interactions occur. Specifically, we propose that colloidal particles respond to local variations in surface potential through electrostatic interactions, altering particle streamlines flowing along the surface and ultimately the extent of deposition.
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Affiliation(s)
- Timothy R Kline
- Department of Biology and Chemistry, Azusa Pacific University, Azusa, California 91702, USA
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Bruni L, Bandini S. The role of the electrolyte on the mechanism of charge formation in polyamide nanofiltration membranes☆. J Memb Sci 2008. [DOI: 10.1016/j.memsci.2007.09.061] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Beolchini F, Pagnanelli F, De Michelis I, Vegliò F. Treatment of concentrated arsenic(V) solutions by micellar enhanced ultrafiltration with high molecular weight cut-off membrane. JOURNAL OF HAZARDOUS MATERIALS 2007; 148:116-21. [PMID: 17367924 DOI: 10.1016/j.jhazmat.2007.02.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2006] [Revised: 02/06/2007] [Accepted: 02/06/2007] [Indexed: 05/14/2023]
Abstract
In this work arsenic removal by micellar enhanced ultrafiltration (MEUF) was investigated using cetylpyridinium chloride (CPC) and a cross-flow polyethersulphone (PES) membrane apparatus. The effects of some operating factors on permeate flux, arsenic and CPC rejections were investigated and, in particular, transmembrane pressure, pH, CPC concentration, As concentration and ionic strength. The novel aim of this work is evaluating the possible advantages of using large molecular weight cut-off membrane (100 kDa) and reduced surfactant concentrations (1-3 mM) for treating high fluxes of concentrated arsenic-bearing solutions (6-10 ppm). The experimental results reported in this paper show that PES membrane apparatus with high molecular weight cut-off allowed to treat large fluxes of concentrated arsenic-bearing solutions (6-10 ppm) even by using low surfactant concentration (1-3mM). In particular arsenic removal ranged from 93-98% to 70-74% depending on initial As concentration (6 and 10 ppm, respectively). In addition surfactant leakage in the permeate was always below CMC due to presieving of concentration polarisation layer. The favourable combination of high MWCO membranes and low surfactant concentration can benefit to overall process economics for the lower membrane area requirement (due to greater flux) and the reduced surfactant consumption.
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Affiliation(s)
- F Beolchini
- Dipartimento di Scienze del Mare, Università Politecnica delle Marche, Via Brecce Bianche, Ancona, Italy
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