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Li Y, Yang X, Wen Y, Zhao Y, Yan L, Han G, Shao L. Progress reports of mineralized membranes: Engineering strategies and multifunctional applications. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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2
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Guo H, Wen C, Tian S, Zhang X, Ma Y, Liu X, Yang J, Zhang L. Universal Intraductal Surface Antifouling Coating Based on an Amphiphilic Copolymer. ACS APPLIED MATERIALS & INTERFACES 2021; 13:21051-21059. [PMID: 33929824 DOI: 10.1021/acsami.1c04579] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Surface modification on the inner wall of medical or industrial polymeric catheters with a high length/diameter ratio is highly desired. Herein, a universal and facile method based on an amphiphilic copolymer was developed to immobilize an intraductal surface antifouling coating for a variety of polymeric catheters. A fouling-repelled thin layer was formed by swelling-driven adsorption via directly perfusing an amphiphilic copolymer [polyvinylpyrrolidone-polydimethylsiloxane-polyvinylpyrrolidone (PVP-PDMS-PVP)] solution into catheters. In this copolymer, hydrophobic PDMS was embedded into a shrinking cross-linked network of catheters; also, PVP segments migrated to the surface under driving water to form a hydrophilic antifouling coating. Moreover, because of the coordination between I2 and pyrrolidone of PVP, the copolymer-modified intraductal surface was then infused with aqueous I2 to form the PVP-I2 complex, endowing this coating with bactericidal activity. Notably, diverse catheters with arbitrary shapes (circular, rectangular, triangular, and hexagonal) and different components (silicone, polyurethane, and polyethylene) were also verified to work using this interfacial interpenetration strategy. The findings in this work provide a new avenue toward facile and universal fabrication of intraductal surface antifouling catheters, creating a superior option for decreasing the consumable costs in industrial production and alleviating the pain of replacing catheters for patients.
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Affiliation(s)
- Hongshuang Guo
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Qingdao Institute for Marine Technology of Tianjin University, Qingdao 266235, China
| | - Chiyu Wen
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Qingdao Institute for Marine Technology of Tianjin University, Qingdao 266235, China
| | - Shu Tian
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Qingdao Institute for Marine Technology of Tianjin University, Qingdao 266235, China
| | - Xiangyu Zhang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Qingdao Institute for Marine Technology of Tianjin University, Qingdao 266235, China
| | - Yiming Ma
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Qingdao Institute for Marine Technology of Tianjin University, Qingdao 266235, China
| | - Xinmeng Liu
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Qingdao Institute for Marine Technology of Tianjin University, Qingdao 266235, China
| | - Jing Yang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Qingdao Institute for Marine Technology of Tianjin University, Qingdao 266235, China
| | - Lei Zhang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Qingdao Institute for Marine Technology of Tianjin University, Qingdao 266235, China
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3
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UV pre-activation/thermal initiated grafting of caffeic acid on PVDF for preparation of adsorptive membranes for cesium. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.09.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Zhang R, Liu Y, He M, Su Y, Zhao X, Elimelech M, Jiang Z. Antifouling membranes for sustainable water purification: strategies and mechanisms. Chem Soc Rev 2018; 45:5888-5924. [PMID: 27494001 DOI: 10.1039/c5cs00579e] [Citation(s) in RCA: 594] [Impact Index Per Article: 99.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
One of the greatest challenges to the sustainability of modern society is an inadequate supply of clean water. Due to its energy-saving and cost-effective features, membrane technology has become an indispensable platform technology for water purification, including seawater and brackish water desalination as well as municipal or industrial wastewater treatment. However, membrane fouling, which arises from the nonspecific interaction between membrane surface and foulants, significantly impedes the efficient application of membrane technology. Preparing antifouling membranes is a fundamental strategy to deal with pervasive fouling problems from a variety of foulants. In recent years, major advancements have been made in membrane preparation techniques and in elucidating the antifouling mechanisms of membrane processes, including ultrafiltration, nanofiltration, reverse osmosis and forward osmosis. This review will first introduce the major foulants and the principal mechanisms of membrane fouling, and then highlight the development, current status and future prospects of antifouling membranes, including antifouling strategies, preparation techniques and practical applications. In particular, the strategies and mechanisms for antifouling membranes, including passive fouling resistance and fouling release, active off-surface and on-surface strategies, will be proposed and discussed extensively.
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Affiliation(s)
- Runnan Zhang
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Yanan Liu
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Mingrui He
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Yanlei Su
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Xueting Zhao
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Menachem Elimelech
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, USA
| | - Zhongyi Jiang
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
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Navarro-Lisboa R, Herrera C, Zúñiga RN, Enrione J, Guzmán F, Matiacevich S, Astudillo-Castro C. Quinoa proteins ( Chenopodium quinoa Willd.) fractionated by ultrafiltration using ceramic membranes: The role of pH on physicochemical and conformational properties. FOOD AND BIOPRODUCTS PROCESSING 2017. [DOI: 10.1016/j.fbp.2016.11.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Self-cleaning Metal Organic Framework (MOF) based ultra filtration membranes--a solution to bio-fouling in membrane separation processes. Sci Rep 2014; 4:6555. [PMID: 25296745 PMCID: PMC4190569 DOI: 10.1038/srep06555] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 09/08/2014] [Indexed: 11/28/2022] Open
Abstract
Bio-fouling is a serious problem in many membrane-based separation processes for water and wastewater treatment. Current state of the art methods to overcome this are to modify the membranes with either hydrophilic additives or with an antibacterial compound. In this study, we propose and practise a novel concept to prevent bio-fouling by developing a killing and self-cleaning membrane surface incorporating antibacterial silver nanoparticles and highly hydrophilic negatively charged carboxylic and amine functional groups. The innovative surface chemistry helps to reduce the contact angle of the novel membrane by at least a 48% and increase the pure water flux by 39.4% compared to the control membrane. The flux drop for the novel membrane is also lower (16.3% of the initial flux) than the control membrane (55.3% of the initial flux) during the long term experiments with protein solution. Moreover, the novel membrane continues to exhibit inhibition to microbes even after 1320 min of protein filtration. Synthesis of self-cleaning ultrafiltration membrane with long lasting properties opens up a viable solution for bio-fouling in ultrafiltration application for wastewater purification.
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He JS, Mu TH, Guo X, Zhu S, Azuma N, Kanno C. Comparison of the gel-forming ability and gel properties of α-lactalbumin, lysozyme and myoglobin in the presence of β-lactoglobulin under high pressure. Food Hydrocoll 2013. [DOI: 10.1016/j.foodhyd.2013.04.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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8
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Separation of polyphenols and proteins from flaxseed hull extracts by coagulation and ultrafiltration. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.04.036] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Zhou S, Xue A, Zhao Y, Li M, Wang H, Xing W. Grafting polyacrylic acid brushes onto zirconia membranes: Fouling reduction and easy-cleaning properties. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2013.04.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Hao Y, Moriya A, Ohmukai Y, Matsuyama H, Maruyama T. Effect of metal ions on the protein fouling of hollow-fiber ultrafiltration membranes. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2013.03.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Low SC, Shaimi R, Thandaithabany Y, Lim JK, Ahmad AL, Ismail A. Electrophoretic interactions between nitrocellulose membranes and proteins: Biointerface analysis and protein adhesion properties. Colloids Surf B Biointerfaces 2013; 110:248-53. [PMID: 23732801 DOI: 10.1016/j.colsurfb.2013.05.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 04/04/2013] [Accepted: 05/01/2013] [Indexed: 10/26/2022]
Abstract
Protein adsorption onto membrane surfaces is important in fields related to separation science and biomedical research. This study explored the molecular interactions between protein, bovine serum albumin (BSA), and nitrocellulose films (NC) using electrokinetic phenomena and the effects of these interactions on the streaming potential measurements for different membrane pore morphologies and pH conditions. The data were used to calculate the streaming ratios of membranes-to-proteins and to compare these values to the electrostatic or hydrophobic attachment of the protein molecules onto the NC membranes. The results showed that different pH and membrane pore morphologies contributes to different protein adsorption mechanisms. The protein adsorption was significantly reduced under conditions where the membrane and protein have like-charges due to electrostatic repulsion. At the isoelectric point (IEP) of the protein, the repulsion between the BSA and the NC membrane was at the lowest; thus, the BSA could be easily attached onto the membrane/solution interface. In this case, the protein was considered to be in a compact layer without intermolecular protein repulsions.
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Affiliation(s)
- S C Low
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, S.P.S., Penang, Malaysia.
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12
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Fabrication of switchable protein resistant and adhesive multilayer membranes. Colloids Surf B Biointerfaces 2012; 94:118-24. [PMID: 22336095 DOI: 10.1016/j.colsurfb.2012.01.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 01/20/2012] [Accepted: 01/20/2012] [Indexed: 10/14/2022]
Abstract
Fabrication of protein adhesive and resistant surfaces based on chitosan/polystyrene sulfonate (CHI/PSS) multilayer membranes is presented. Adsorption behavior of bovine serum albumin (BSA) and lysozyme to CHI/PSS multilayer was studied by simple adsorption method and under pressure driven (ultrafiltration) conditions. The protein incorporated membranes were characterized by FT-IR, UV-vis, SEM and AFM. The loading of proteins to the multilayer was found to be dependent on the nature of protein, pH, number of bilayers, methods of adsorption and time of adsorption. Simple adsorption resulted in BSA adhesive layers with some conformational changes at higher number of bilayers. Ultrafiltration leads to protein repellence at higher number of bilayers which is attributed to the presence of irremovable water. Lysozyme adsorption/sorption varied with pH. Surface coverage dominates at pH close to pI and at pH 5 under ultraflitration condition where as simple adsorption resulted in protein repellence at pI. The secondary structure of adsorbed lysozyme is preserved for a wide pH range (5-11). Desorption study of lysozyme adsorbed membranes at pH 8.8 was carried out to understand the adsorption/sorption of protein. Diffusion of the sorbed lysozyme from the inner layers to the surface is found to take place at lower concentrations of NaCl.
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13
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Capar G. Separation of silkworm proteins in cocoon cooking wastewaters via nanofiltration: Effect of solution pH on enrichment of sericin. J Memb Sci 2012. [DOI: 10.1016/j.memsci.2011.11.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Barroso T, Temtem M, Casimiro T, Aguiar-Ricardo A. Antifouling performance of poly(acrylonitrile)-based membranes: From green synthesis to application. J Supercrit Fluids 2011. [DOI: 10.1016/j.supflu.2010.10.035] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Saxena A, Shahi VK. Isoelectric Separation of Proteins using Charged Ultrafilter Membranes with Different Functionality under Coupled Driving Forces. Ind Eng Chem Res 2009. [DOI: 10.1021/ie900258d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Arunima Saxena
- Electro-Membrane Processes Division, Central Salt & Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), G. B. Marg, Bhavnagar-3640021, (Gujarat) INDIA
| | - Vinod K. Shahi
- Electro-Membrane Processes Division, Central Salt & Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), G. B. Marg, Bhavnagar-3640021, (Gujarat) INDIA
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16
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Zhang Q, Fan Y, Xu N. Effect of the surface properties on filtration performance of Al2O3–TiO2 composite membrane. Sep Purif Technol 2009. [DOI: 10.1016/j.seppur.2008.12.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Protein–membrane interactions in forced-flow electrophoresis of protein solutions: Effect of initial pH and initial ionic strength. Sep Purif Technol 2009. [DOI: 10.1016/j.seppur.2008.12.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Wan Y, Cui Z, Ghosh R. Fractionation of Proteins Using Ultrafiltration: Developments and Challenges. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/apj.5500130112] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Dynamics of the ceramic ultrafiltration of model proteins with different isoelectric point: Comparison of β-lactoglobulin and lysozyme. Sep Purif Technol 2007. [DOI: 10.1016/j.seppur.2007.05.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Aravind UK, Mathew J, Aravindakumar C. Transport studies of BSA, lysozyme and ovalbumin through chitosan/polystyrene sulfonate multilayer membrane. J Memb Sci 2007. [DOI: 10.1016/j.memsci.2007.04.036] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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de la Casa EJ, Guadix A, Ibáñez R, Guadix EM. Influence of pH and salt concentration on the cross-flow microfiltration of BSA through a ceramic membrane. Biochem Eng J 2007. [DOI: 10.1016/j.bej.2006.09.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Properties of protein adsorption onto pore surface during microfiltration: Effects of solution environment and membrane hydrophobicity. J Memb Sci 2006. [DOI: 10.1016/j.memsci.2006.01.039] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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Chun MS, Park WC. Time evolution of electrokinetic flow-induced streaming potential and flux in dead-end and cross-flow filtration of colloids through nanopores. J Memb Sci 2004. [DOI: 10.1016/j.memsci.2004.07.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Zhao ZP, Wang Z, Wang SC. Formation, charged characteristic and BSA adsorption behavior of carboxymethyl chitosan/PES composite MF membrane. J Memb Sci 2003. [DOI: 10.1016/s0376-7388(03)00105-4] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Martı́nez F, Martı́n A, Malfeito J, Palacio L, Prádanos P, Tejerina F, Hernández A. Streaming potential through and on ultrafiltration membranes. J Memb Sci 2002. [DOI: 10.1016/s0376-7388(01)00788-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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26
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27
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Jones KL, O’Melia CR. Ultrafiltration of protein and humic substances: effect of solution chemistry on fouling and flux decline. J Memb Sci 2001. [DOI: 10.1016/s0376-7388(01)00492-6] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Guo L, Hunt BJ, Santschi PH. Ultrafiltration behavior of major ions (Na, Ca, Mg, F, Cl, and SO4) in natural waters. WATER RESEARCH 2001; 35:1500-1508. [PMID: 11317897 DOI: 10.1016/s0043-1354(00)00407-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Aquatic colloids, including macromolecules and microparticles, with sizes ranging between 1 nm to 1 micron, play important roles in the mobility and bioavailability of heavy metals and other contaminants in natural waters. Cross-flow ultrafiltration has become one of the most commonly used techniques for isolating aquatic colloids. However, the ultrafiltration behavior of chemical species remains poorly understood. We report here the permeation behavior of major ions (Na, Ca, Mg, F, Cl, and SO4) in natural waters during ultrafiltration using an Amicon 1 kDa ultrafiltration membrane (S10N1). Water samples across a salinity gradient of 0-20@1000 were collected from the Trinity River and Galveston Bay. The permeation behavior of major ions was well predicted by a permeation model, resulting in a constant permeation coefficient for each ion. The value of the model-derived permeation coefficient (Pc) was 0.99 for Na, 0.97 for Cl, and 0.95 for F, respectively, in Trinity River waters. Values of Pc close to 1 indicate that retention of Na, Cl, and F by the 1 kDa membrane during ultrafiltration was indeed minimal (< 1-5%). In contrast, significant (14-36%) retention was observed for SO4, Ca, and Mg in Trinity River waters, with a Pc value of 0.64, 0.82, and 0.86 for SO4, Ca and Mg, respectively. However, these retained major ions can further permeate through the 1 kDa membrane during diafiltration with ultrapure water. The selective retention of major ions during ultrafiltration may have important implications for the measurement of chemical and physical speciation of trace elements when using cross-flow ultrafiltration membranes to separate colloidal species from natural waters. Our results also demonstrate that the percent retention of major ions during ultrafiltration decreases with increasing salinity or ionic strength. This retention is largely attributed to electrostatic repulsion by the negatively charged cartridge membrane.
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Affiliation(s)
- L Guo
- Texas A&M University, Laboratory for Oceanographic and Environmental Research, Department of Oceanography, 5007 Avenue U, Galveston, TX 77551, USA.
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29
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The effect of protein–protein and protein–membrane interactions on membrane fouling in ultrafiltration. J Memb Sci 2000. [DOI: 10.1016/s0376-7388(00)00501-9] [Citation(s) in RCA: 220] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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