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Habibi S, Rabiller-Baudry M, Lopes F, Bellet F, Goyeau B, Rakib M, Couallier E. New insights into the structure of membrane fouling by biomolecules using comparison with isotherms and ATR-FTIR local quantification. ENVIRONMENTAL TECHNOLOGY 2022; 43:207-224. [PMID: 32543977 DOI: 10.1080/09593330.2020.1783370] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 06/08/2020] [Indexed: 06/11/2023]
Abstract
The objective of this paper was to propose a deepened analyze of a microfiltration membrane fouling by two biomolecules: a protein (Bovine Serum Albumin) and a peptide (Glutathione). In addition to an analysis of flux decline, the mass of biomolecules accumulated on the membrane during filtration was quantified and compared to adsorption experiments, using Fourier Transform Infra Red spectroscopy in Attenuated Total Reflection mode (ATR-FTIR). It was demonstrated that the same quantity of accumulated biomolecules on the apparent membrane area can generate totally different flux declines because of different fouling mechanisms. On the one hand, Glutathione can adsorb in the whole porous media of the membrane, penetrating through the pores, modifying the hydrophilicity at low concentrations and generating pore constriction at high concentrations. On the other hand, BSA organize a dense irreversible fouling in the first minutes of filtration containing a quantity equivalent to more than 45 monolayers, leading to pore blocking and pore constriction. This structure is resistant to rinsing and NaOH cleaning. Then a reversible fouling, containing a quantity equivalent to more than 90 monolayers is settled. The above structure can be removed with an intensive water rinsing and corresponds to a rather porous cake leading to a low resistance to water permeation, whereas the intermediate structure can only be removed with chemical cleaning and has a higher impact on water permeation. The original approach detailed in this paper allowed to go deeper in the understanding of the membrane fouling by soft matter, not detailed in previous papers.
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Affiliation(s)
- Sepideh Habibi
- Laboratoire de Génie des Procédés et Matériaux, LGPM, CentraleSupélec, Université Paris-Saclay, Gif-sur-Yvette, France
| | | | - Filipa Lopes
- Laboratoire de Génie des Procédés et Matériaux, LGPM, CentraleSupélec, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Fabien Bellet
- Laboratoire EM2C, CNRS, CentraleSupélec, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Benoit Goyeau
- Laboratoire EM2C, CNRS, CentraleSupélec, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Mohammed Rakib
- Laboratoire de Génie des Procédés et Matériaux, LGPM, CentraleSupélec, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Estelle Couallier
- Laboratoire de Génie des Procédés et Matériaux, LGPM, CentraleSupélec, Université Paris-Saclay, Gif-sur-Yvette, France
- Université de Nantes, CNRS, ONIRIS, Laboratoire de Génie des Procédés, Environnement et Agroalimentaire, GEPEA, Saint Nazaire, France
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2
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Lay HT, Yeow RJE, Ma Y, Zydney AL, Wang R, Chew JW. Internal membrane fouling by proteins during microfiltration. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119589] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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3
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Ma Y, Zydney AL, Wang R, Chew JW. Molecular dynamics study on membrane fouling by oppositely charged proteins. AIChE J 2021. [DOI: 10.1002/aic.17335] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yunqiao Ma
- School of Chemical and Biomedical Engineering Nanyang Technological University Singapore Singapore
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute Nanyang Technological University Singapore Singapore
| | - Andrew L. Zydney
- Department of Chemical Engineering The Pennsylvania State University University Park Pennsylvania USA
| | - Rong Wang
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute Nanyang Technological University Singapore Singapore
- School of Civil and Environmental Engineering Nanyang Technological University Singapore Singapore
| | - Jia Wei Chew
- School of Chemical and Biomedical Engineering Nanyang Technological University Singapore Singapore
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute Nanyang Technological University Singapore Singapore
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Upadhyaya L, Semsarilar M, Quemener D, Fernández-Pacheco R, Martinez G, Coelhoso IM, Nunes SP, Crespo JG, Mallada R, Portugal CAM. Block Copolymer-Based Magnetic Mixed Matrix Membranes-Effect of Magnetic Field on Protein Permeation and Membrane Fouling. MEMBRANES 2021; 11:105. [PMID: 33540798 PMCID: PMC7912976 DOI: 10.3390/membranes11020105] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/27/2021] [Accepted: 01/28/2021] [Indexed: 12/02/2022]
Abstract
In this study, we report the impact of the magnetic field on protein permeability through magnetic-responsive, block copolymer, nanocomposite membranes with hydrophilic and hydrophobic characters. The hydrophilic nanocomposite membranes were composed of spherical polymeric nanoparticles (NPs) synthesized through polymerization-induced self-assembly (PISA) with iron oxide NPs coated with quaternized poly(2-dimethylamino)ethyl methacrylate. The hydrophobic nanocomposite membranes were prepared via nonsolvent-induced phase separation (NIPS) containing poly (methacrylic acid) and meso-2,3-dimercaptosuccinic acid-coated superparamagnetic nanoparticles (SPNPs). The permeation experiments were carried out using bovine serum albumin (BSA) as the model solute, in the absence of the magnetic field and under permanent and cyclic magnetic field conditions OFF/ON (strategy 1) and ON/OFF (strategy 2). It was observed that the magnetic field led to a lower reduction in the permeate fluxes of magnetic-responsive membranes during BSA permeation, regardless of the magnetic field strategy used, than that obtained in the absence of the magnetic field. Nevertheless, a comparative analysis of the effect caused by the two cyclic magnetic field strategies showed that strategy 2 allowed for a lower reduction of the original permeate fluxes during BSA permeation and higher protein sieving coefficients. Overall, these novel magneto-responsive block copolymer nanocomposite membranes proved to be competent in mitigating biofouling phenomena in bioseparation processes.
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Affiliation(s)
- Lakshmeesha Upadhyaya
- Advanced Membranes and Porous Materials Center (AMPM), Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Saudi Arabia; (L.U.); (S.P.N.)
| | - Mona Semsarilar
- Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, ENSCM, CNRS, 34070 Montpellier, France; (M.S.); (D.Q.)
| | - Damien Quemener
- Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, ENSCM, CNRS, 34070 Montpellier, France; (M.S.); (D.Q.)
| | - Rodrigo Fernández-Pacheco
- Laboratorio de Microscopías Avanzadas (LMA), Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50018 Zaragoza, Spain;
| | - Gema Martinez
- Networking Research Centre on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain;
- Instituto de Nanociencia y Materiales de Aragoń (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Isabel M. Coelhoso
- LAQV-REQUIMTE, Departamento de Química, Campus de Caparica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (I.M.C.); (J.G.C.)
| | - Suzana P. Nunes
- Advanced Membranes and Porous Materials Center (AMPM), Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Saudi Arabia; (L.U.); (S.P.N.)
| | - João G. Crespo
- LAQV-REQUIMTE, Departamento de Química, Campus de Caparica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (I.M.C.); (J.G.C.)
| | - Reyes Mallada
- Instituto de Nanociencia y Materiales de Aragoń (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Carla A. M. Portugal
- LAQV-REQUIMTE, Departamento de Química, Campus de Caparica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (I.M.C.); (J.G.C.)
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Jafar Mazumder MA, Raja PH, Isloor AM, Usman M, Chowdhury SH, Ali SA, Inamuddin, Al-Ahmed A. Assessment of sulfonated homo and co-polyimides incorporated polysulfone ultrafiltration blend membranes for effective removal of heavy metals and proteins. Sci Rep 2020; 10:7049. [PMID: 32341422 PMCID: PMC7184734 DOI: 10.1038/s41598-020-63736-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 04/06/2020] [Indexed: 12/07/2022] Open
Abstract
Sulfonated homo and co- polyimide (sPI) were synthesized with new compositional ratios, and used as additives (0.5 wt%, 0.75 wt%, and 1.0 wt%) to prepare blend membranes with polysulfone (PSf). Flat sheet membranes for ultrafiltration (UF) were casted using the phase inversion technique. Surface morphology of the prepared UF membranes were characterized by atomic force microscopy (AFM) and scanning electron microscopy (SEM). Surface charge of the membranes were determined by zeta potential, and hydrophilicity was studied by contact angle measurement. The contact angle of the membrane decreased with increasing sPI additive indicates increasing the hydrophilicity of the blend membranes. Filtration studies were conducted for rejection of heavy metals (Pb2+ and Cd2+) and proteins (pepsin and BSA). Blend membranes showed better rejection than pure PSf membrane. Among the blend membranes it was observed that with increasing amount of sPIs enhance the membrane properties and finally, PSf-sPI5 membrane with 1 wt% of sPI5 showed the improved permeability (72.1 L m-2 h-1 bar-1), and the best rejection properties were found for both metal ions (≈98% of Pb2+; ≈92% of Cd2+) and proteins (>98% of BSA; > 86% of Pepsin). Over all, this membrane was having better hydrophilicity, porosity and higher number of sites to attach the metal ions. Its performance was even better than several-reported sulfonic acid based UF membranes. All these intriguing properties directed this new UF membrane for its potential application in wastewater treatment.
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Affiliation(s)
| | - Panchami H Raja
- Membrane Technology Laboratory, Chemistry Department, National Institute of Technology Karnataka, Surathkal, Mangalore, 575 025, India
| | - Arun M Isloor
- Membrane Technology Laboratory, Chemistry Department, National Institute of Technology Karnataka, Surathkal, Mangalore, 575 025, India
| | - Muhammad Usman
- Center for Research Excellence in Nanotechnology (CENT), King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
| | - Shakhawat H Chowdhury
- Department of Civil and Environmental Engineering, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
| | - Shaikh A Ali
- Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
| | - Inamuddin
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Advanced Functional Materials Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202 002, India
| | - Amir Al-Ahmed
- Center of Research Excellence in Renewable Energy, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
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6
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Yeung R, Zhu X, Gee T, Gheen B, Jassby D, Rodgers VGJ. Single and binary protein electroultrafiltration using poly(vinyl-alcohol)-carbon nanotube (PVA-CNT) composite membranes. PLoS One 2020; 15:e0228973. [PMID: 32298267 PMCID: PMC7162463 DOI: 10.1371/journal.pone.0228973] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 03/20/2020] [Indexed: 11/18/2022] Open
Abstract
Electrically conductive composite ultrafiltration membranes composed of carbon nanotubes have exhibited efficient fouling inhibition in wastewater treatment applications. In the current study, poly(vinyl-alcohol)-carbon nanotube membranes were applied to fed batch crossflow electroultrafiltration of dilute (0.1 g/L of each species) single and binary protein solutions of α-lactalbumin and hen egg-white lysozyme at pH 7.4, 4 mM ionic strength, and 1 psi. Electroultrafiltration using the poly(vinyl-alcohol)-carbon nanotube composite membranes yielded temporary enhancements in sieving for single protein filtration and in selectivity for binary protein separation compared to ultrafiltration using the unmodified PS-35 membranes. Assessment of membrane fouling based on permeate flux, zeta potential measurements, and scanning electron microscopy visualization of the conditioned membranes indicated significant resulting protein adsorption and aggregation which limited the duration of improvement during electroultrafiltration with an applied cathodic potential of -4.6 V (vs. Ag/AgCl). These results imply that appropriate optimization of electroultrafiltration using carbon nanotube-deposited polymeric membranes may provide substantial short-term improvements in binary protein separations.
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Affiliation(s)
- Raymond Yeung
- Department of Bioengineering, University of California, Riverside, Riverside, California, United States of America
| | - Xiaobo Zhu
- Department of Civil and Environmental Engineering, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Terence Gee
- Department of Bioengineering, University of California, Riverside, Riverside, California, United States of America
| | - Ben Gheen
- Department of Bioengineering, University of California, Riverside, Riverside, California, United States of America
| | - David Jassby
- Department of Civil and Environmental Engineering, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Victor G. J. Rodgers
- Department of Bioengineering, University of California, Riverside, Riverside, California, United States of America
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7
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Membrane separation technology for the recovery of nutraceuticals from food industrial streams. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.02.049] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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8
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Ding Y, Ma B, Liu H, Qu J. Effects of protein properties on ultrafiltration membrane fouling performance in water treatment. J Environ Sci (China) 2019; 77:273-281. [PMID: 30573091 DOI: 10.1016/j.jes.2018.08.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 08/19/2018] [Accepted: 08/20/2018] [Indexed: 05/09/2023]
Abstract
Protein-like substances always induce severe ultrafiltration (UF) membrane fouling. To systematically understand the effect of proteins, regenerated cellulose UF membrane (commonly used for protein separation) performance was investigated in the presence of bovine serum albumin (BSA) under various water conditions. Results showed that although trypsin enhanced the membrane flux via proteolysis, catalysis took a long time. Membrane fouling was alleviated at high solution pH and low water temperature owing to the strong electrostatic repulsion force among BSA molecules. Both Na+ and Ca2+ could increase membrane flux. However, Ca2+ played a bridging role between adjacent BSA molecules, whereas membrane fouling was alleviated via a hydration repulsion force with Na+. The order of influence on membrane fouling was as follows: Ca2+ concentration > Na+ concentration > pH > temperature > trypsin concentration. Furthermore, a polyvinylidene fluoride UF membrane experiment showed that Ca2+ could reduce the fouling induced by BSA. Thus, the differences in UF membrane performance will have application potential for alleviating UF membrane fouling induced by proteins during water treatment.
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Affiliation(s)
- Yanyan Ding
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Baiwen Ma
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Huijuan Liu
- University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jiuhui Qu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
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9
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A precise combined complete blocking and cake filtration model for describing the flux variation in membrane filtration process with BSA solution. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.08.013] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Ma B, Wang X, Hu C, Jefferson WA, Liu H, Qu J. Antifouling by pre-deposited Al hydrolytic flocs on ultrafiltration membrane in the presence of humic acid and bovine serum albumin. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.05.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Lee J, Jeong S, Ye Y, Chen V, Vigneswaran S, Leiknes T, Liu Z. Protein fouling in carbon nanotubes enhanced ultrafiltration membrane: Fouling mechanism as a function of pH and ionic strength. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2016.10.061] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Protein-Repellence PES Membranes Using Bio-grafting of Ortho-aminophenol. Polymers (Basel) 2016; 8:polym8080306. [PMID: 30974579 PMCID: PMC6432355 DOI: 10.3390/polym8080306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 08/02/2016] [Accepted: 08/08/2016] [Indexed: 11/16/2022] Open
Abstract
Surface modification becomes an effective tool for improvement of both flux and selectivity of membrane by reducing the adsorption of the components of the fluid used onto its surface. A successful green modification of poly(ethersulfone) (PES) membranes using ortho-aminophenol (2-AP) modifier and laccase enzyme biocatalyst under very flexible conditions is presented in this paper. The modified PES membranes were evaluated using many techniques including total color change, pure water flux, and protein repellence that were related to the gravimetric grafting yield. In addition, static water contact angle on laminated PES layers were determined. Blank and modified commercial membranes (surface and cross-section) and laminated PES layers (surface) were imaged by scanning electron microscope (SEM) and scanning probe microscope (SPM) to illustrate the formed modifying poly(2-aminophenol) layer(s). This green modification resulted in an improvement of both membrane flux and protein repellence, up to 15.4% and 81.27%, respectively, relative to the blank membrane.
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Nady N. PES Surface Modification Using Green Chemistry: New Generation of Antifouling Membranes. MEMBRANES 2016; 6:membranes6020023. [PMID: 27096873 PMCID: PMC4931518 DOI: 10.3390/membranes6020023] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 04/01/2016] [Accepted: 04/13/2016] [Indexed: 12/02/2022]
Abstract
A major limitation in using membrane-based separation processes is the loss of performance due to membrane fouling. This drawback can be addressed thanks to surface modification treatments. A new and promising surface modification using green chemistry has been recently investigated. This modification is carried out at room temperature and in aqueous medium using green catalyst (enzyme) and nontoxic modifier, which can be safely labelled “green surface modification”. This modification can be considered as a nucleus of new generation of antifouling membranes and surfaces. In the current research, ferulic acid modifier and laccase bio-catalyst were used to make poly(ethersulfone) (PES) membrane less vulnerable to protein adsorption. The blank and modified PES membranes are evaluated based on e.g., their flux and protein repellence. Both the blank and the modified PES membranes (or laminated PES on silicon dioxide surface) are characterized using many techniques e.g., SEM, EDX, XPS and SPM, etc. The pure water flux of the most modified membranes was reduced by 10% on average relative to the blank membrane, and around a 94% reduction in protein adsorption was determined. In the conclusions section, a comparison between three modifiers—ferulic acid, and two other previously used modifiers (4-hydroxybenzoic acid and gallic acid)—is presented.
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Affiliation(s)
- Norhan Nady
- Polymeric Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Boarg El-Arab City 21934, Alexandria, Egypt.
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14
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Zhou M, Meng F. Aluminum-induced changes in properties and fouling propensity of DOM solutions revealed by UV-vis absorbance spectral parameters. WATER RESEARCH 2016; 93:153-162. [PMID: 26900968 DOI: 10.1016/j.watres.2015.11.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 11/17/2015] [Accepted: 11/20/2015] [Indexed: 06/05/2023]
Abstract
The integration of pre-coagulation with ultrafiltration (UF) is expected to not only reduce membrane fouling but also improve natural organic matter (NOM) removal. However, it is difficult to determine the proper coagulant dosage for different water qualities. The objective of this study was to probe the potential of UV-vis spectroscopic analysis to reveal the coagulant-induced changes in the fouling potentials of dissolved organic matter (DOM) and to determine the optimal coagulant dosage. The Zeta potentials (ZPs) and average particle size of the four DOM solutions (Aldrich humic acid (AHA), AHA-sodium alginate (SA), AHA-bovine serum albumin (BSA) and AHA-dextran (DEX)) coagulated with aluminum chloride (AlCl3) were measured. Results showed that increasing the aluminum coagulant dosage induced the aggregation of DOM. Meanwhile, the addition of aluminum coagulant resulted in an increase in DSlope(325-375) (the slope of the log-transformed absorbance spectra from 325 to 375 nm) and a decrease in S(275-295) (the slope of the log-transformed absorption coefficient from 275 to 295 nm) and SR (the ratio of Slope(275-295) and Slope(350-400)). The variations of these spectral parameters (i.e., DSlope(325-375), S(275-295) and SR) correlated well with the aluminum-caused changes in ZPs and average particle size. This implies that spectral parameters have the potential to indicate DOM aggregation. In addition, good correlations of spectral parameters and membrane fouling behaviors (i.e., unified membrane fouling index (UMFI)) suggest that the changes in DSlope(325-375), S(275-295) and SR were indicative of the aluminum-caused alterations of fouling potentials of all DOM solutions. Interestingly, the optimal dosage of aluminum (40 μM for AHA, AHA-BSA, and AHA-DEX) was obtained based on the relation between spectral parameters and fouling behaviors. Overall, the spectroscopic analysis, particularly for the utilization of spectral parameters, provided a convenient approach for the exploration of combined coagulation and UF systems for DOM removal.
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Affiliation(s)
- Minghao Zhou
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Fangang Meng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China.
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15
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Ur Rehman A, Kovacs Z, Quitmann H, Ebrahimi M, Czermak P. Enzymatic production of fructo-oligosaccharides from inexpensive and abundant substrates using a membrane reactor system. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1167740] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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16
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Effect of aluminum speciation on ultrafiltration membrane fouling by low dose aluminum coagulation with bovine serum albumin (BSA). J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.05.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Evaluation of cleaning efficiency of ultrafiltration membranes fouled by BSA using FTIR–ATR as a tool. J FOOD ENG 2015. [DOI: 10.1016/j.jfoodeng.2015.04.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Balyan U, Sarkar B. Enhanced Separation of Polyethylene Glycol from Bovine Serum Albumin Using Electro-Ultrafiltration. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2015.1014493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Velasco C, Calvo J, Palacio L, Carmona J, Prádanos P, Hernández A. Flux kinetics, limit and critical fluxes for low pressure dead-end microfiltration. The case of BSA filtration through a positively charged membrane. Chem Eng Sci 2015. [DOI: 10.1016/j.ces.2015.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Jiang Y, Lu H, Khine YY, Dag A, Stenzel MH. Polyion complex micelle based on albumin-polymer conjugates: multifunctional oligonucleotide transfection vectors for anticancer chemotherapeutics. Biomacromolecules 2014; 15:4195-205. [PMID: 25290019 DOI: 10.1021/bm501205x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Novel biocompatible polyion complex micelles, containing bovine serum albumin (BSA), polymer, and oligonucleotide, were synthesized as a generation of vectors for the gene transfection. Maleimide-terminated poly((N,N-dimethyl amino) ethyl methacrylate) (PDMAEMA) was prepared via reversible addition-fragmentation chain transfer (RAFT) polymerization and subsequently deprotected. Precise one to one albumin-PDMAEMA bioconjugates have been achieved via 1,4-addition with the free thiol group on Cys34 on the BSA protein. SDS-PAGE and GPC (water) confirmed and quantified the successful conjugation. The conjugation efficiency was found to be independent of the molecular weight of PDMAEMA. After careful pH adjustment, the conjugate could efficiently condense anticancer oligonucleotide, ISIS 5132, which resulted in particles of 15-35 nm with a negative zeta-potential. The size was easily controlled by the polymer chain length. The albumin corona provides complete protection of the cationic polymer and genetic drug, which gave rise to lower potential toxicity from the polymer and higher gene transfection efficiency. Although a control experiment with a traditional PEG-based polyion complex micelle could deliver the drug just as effectively, if not more so, to the ovarian cancer cell line OVCAR-3, this carrier had no selectivity toward cancerous cells and proved just as toxic to HS27 (fibroblast) cell line. In contrast, the albumin-coated particles demonstrated desirable selectivity toward cancerous cells and have been shown to have outstanding performance in the cytotoxicity tests of several carcinoma monolayer cell models. In addition, the complex micelles were able to destroy pancreatic multicellular tumor spheroids, while free ISIS 5132 could not penetrate the spheroid at all. Hence, albumin-coated/oligonucleotide complex micelles are far more promising than the most classical gene delivery vectors.
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Affiliation(s)
- Yanyan Jiang
- Centre for Advanced Macromolecular Design (CAMD), School of Chemistry, University of New South Wales , Sydney, NSW 2052, Australia
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21
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Rezaei H, Ashtiani FZ, Fouladitajar A. Fouling behavior and performance of microfiltration membranes for whey treatment in steady and unsteady-state conditions. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2014. [DOI: 10.1590/0104-6632.20140312s00002521] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- H. Rezaei
- University of British Columbia, Canada
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22
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Ma B, Yu W, Liu H, Qu J. Effect of low dosage of coagulant on the ultrafiltration membrane performance in feedwater treatment. WATER RESEARCH 2014; 51:277-83. [PMID: 24252454 DOI: 10.1016/j.watres.2013.10.069] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 10/27/2013] [Accepted: 10/28/2013] [Indexed: 05/08/2023]
Abstract
One of the critical issues for the widely application of ultrafiltration (UF) in water treatment is membrane fouling owning to the dissolved organic matter. The aim of the present study is to explore the effect of various particle sizes caused by low dosages of coagulant with dissolved organic matter on the UF membrane performance. Aluminum chloride was added to the synthetic water with the hydrophobic humic acid (HA), the hydrophilic bovine serum albumin (BSA) - a protein- and their 1:1 (mass ratio) mixture. The results showed that there was a critical dose of Al that could cause dramatic flux reduction by blocking the membrane pores after coagulating with HA/BSA. For HA or BSA, the critical dose of Al was relatively lower at pH 6.0 than that at pH 8.0. After coagulation, the flux decline caused by HA was slightly varied as a function of pH while that caused by BSA was greatly affected by pH. The flux decline caused by the 1:1 (mass ratio) HA/BSA mixture after coagulation was similar to that caused by HA after coagulation because BSA could be encapsulated by HA. In addition, the peak value of the molecular weight (MW) distribution of HA coagulated with Al was changed more drastically compared to that of BSA after filtration.
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Affiliation(s)
- Baiwen Ma
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenzheng Yu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Huijuan Liu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jiuhui Qu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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23
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24
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Fouling study of TiO2–boehmite MF membrane in defatting of whey solution: Feed concentration and pH effects. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.07.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Razi F, Sawada I, Ohmukai Y, Maruyama T, Matsuyama H. The improvement of antibiofouling efficiency of polyethersulfone membrane by functionalization with zwitterionic monomers. J Memb Sci 2012. [DOI: 10.1016/j.memsci.2012.02.020] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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26
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Li Q, Zhou B, Bi QY, Wang XL. Surface modification of PVDF membranes with sulfobetaine polymers for a stably anti-protein-fouling performance. J Appl Polym Sci 2012. [DOI: 10.1002/app.36715] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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Cutler H, Husson S, Wickramasinghe S. Prefiltration to suppress protein fouling of microfiltration membranes. Sep Purif Technol 2012. [DOI: 10.1016/j.seppur.2012.01.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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28
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Celik E, Liu L, Choi H. Protein fouling behavior of carbon nanotube/polyethersulfone composite membranes during water filtration. WATER RESEARCH 2011; 45:5287-94. [PMID: 21862096 DOI: 10.1016/j.watres.2011.07.036] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Revised: 06/03/2011] [Accepted: 07/28/2011] [Indexed: 05/19/2023]
Abstract
The protein fouling of membranes can be related to the hydrophobic and electrostatic interactions between proteins and the membrane material; i.e., protein fouling can be reduced by changing the membrane properties. In this study, multi-walled carbon nanotube/polyethersulfone (C/P) composite membranes were prepared via the phase inversion method in order to investigate protein fouling, with bovine serum albumin (BSA) and ovalbumin (OVA) used as the model protein for assessing the protein fouling behavior. The results show that the C/P composite membranes were fouled less compared to the bare polyethersulfone (PES) membrane at 4 h of static protein adsorption at neutral pH. Moreover, the irreversible fouling ratio of the C/P composite membranes was less than the bare PES membrane after 1 h of protein ultrafiltration, and the flux recovery ratio of the C/P composite membranes was higher than the bare PES membrane after 20 min of DI water filtration. Based on these results, C/P composite membranes were shown to have the potential to alleviate the effects of protein fouling, thereby enabling C/P composite membranes to be used for several runs of protein filtration after simple washing with water.
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Affiliation(s)
- Evrim Celik
- School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, 1 Oryong-dong, Buk-gu, Gwangju 500-712, Republic of Korea
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29
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Wang YN, Tang CY. Nanofiltration membrane fouling by oppositely charged macromolecules: investigation on flux behavior, foulant mass deposition, and solute rejection. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2011; 45:8941-8947. [PMID: 21928796 DOI: 10.1021/es202709r] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Nanofiltration membrane fouling by oppositely charged polysaccharide (alginate) and protein (lysozyme) was systematically studied. It was found that membrane flux decline in the presence of both lysozyme and alginate was much more severe compared to that when there was only lysozyme or alginate in the feed solution. The flux performance for the mixed foulants was only weakly affected by solution pH and calcium concentration. These effects were likely due to the strong electrostatic attraction between the two oppositely charged foulants. Higher initial flux caused increased foulant deposition, more compact foulant layer, and more severe flux decline. The deposited foulant cake layer had a strong tendency to maintain a constant foulant composition that was independent of the membrane initial flux and only weakly dependent on the relative foulant concentration in feed solution. In contrast, solution chemistry (pH and [Ca²⁺]) had marked effect on the foulant layer composition, likely due to the resulting changes in the foulant-foulant interaction. The mixed alginate-lysozyme fouling could result in an initial enhancement in salt rejection. However, such initial enhancement was not observed when there was 1 mM calcium present in the feedwater, which may be attributed to the charge neutralization of the foulant layer.
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Affiliation(s)
- Yi-Ning Wang
- School of Civil and Environmental Engineering, and Singapore Membrane Technology Centre, Nanyang Technological University, Singapore
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30
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Colloidal and bacterial fouling during constant flux microfiltration: Comparison of classical blocking laws with a unified model combining pore blocking and EPS secretion. J Memb Sci 2011. [DOI: 10.1016/j.memsci.2011.08.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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31
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Kumar S, Aswal VK, Kohlbrecher J. SANS and UV-vis spectroscopy studies of resultant structure from lysozyme adsorption on silica nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:10167-10173. [PMID: 21707044 DOI: 10.1021/la201291k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The interaction of lysozyme protein (M.W. 14.7 kD) with two sizes of silica nanoparticles (16 and 25 nm) has been examined in aqueous solution using UV-vis spectroscopy and small-angle neutron scattering (SANS). The measurements were performed on fixed concentration (1 wt %) of nanoparticles and varying concentration of protein in the range 0 to 2 wt %. The adsorption isotherm as obtained using UV-vis spectroscopy suggests strong interaction of the two components and shows an exponential behavior. The saturation values of adsorption are found to be around 90 and 270 protein molecules per particle for 16 and 25 nm sized nanoparticles, respectively. The adsorption of protein on nanoparticles leads to the aggregation of particles and these structures have been studied by SANS. The aggregates are characterized by fractal structure coexisting with unaggregated particles at low protein concentrations and free proteins at higher protein concentrations. Further, contrast variation SANS measurements have been carried out to differentiate the adsorbed and free protein in these systems.
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Affiliation(s)
- Sugam Kumar
- Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
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32
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Kujundzic E, Greenberg AR, Fong R, Hernandez M. Monitoring protein fouling on polymeric membranes using ultrasonic frequency-domain reflectometry. MEMBRANES 2011; 1:195-216. [PMID: 24957732 PMCID: PMC4021895 DOI: 10.3390/membranes1030195] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Revised: 07/26/2011] [Accepted: 08/05/2011] [Indexed: 11/16/2022]
Abstract
Novel signal-processing protocols were used to extend the in situ sensitivity of ultrasonic frequency-domain reflectometry (UFDR) for real-time monitoring of microfiltration (MF) membrane fouling during protein purification. Different commercial membrane materials, with a nominal pore size of 0.2 µm, were challenged using bovine serum albumin (BSA) and amylase as model proteins. Fouling induced by these proteins was observed in flat-sheet membrane filtration cells operating in a laminar cross-flow regime. The detection of membrane-associated proteins using UFDR was determined by applying rigorous statistical methodology to reflection spectra of ultrasonic signals obtained during membrane fouling. Data suggest that the total power reflected from membrane surfaces changes in response to protein fouling at concentrations as low as 14 μg/cm2, and results indicate that ultrasonic spectra can be leveraged to detect and monitor protein fouling on commercial MF membranes.
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Affiliation(s)
- Elmira Kujundzic
- Department of Mechanical Engineering, University of Colorado at Boulder, Membrane Science, Engineering and Technology (MAST) Center, 427 UCB, Boulder, CO 80309-0427, USA.
| | - Alan R Greenberg
- Department of Mechanical Engineering, University of Colorado at Boulder, Membrane Science, Engineering and Technology (MAST) Center, 427 UCB, Boulder, CO 80309-0427, USA.
| | - Robin Fong
- Genencor, a Danisco Division, 925 Page Mill Rd, Palo Alto, CA 94304, USA.
| | - Mark Hernandez
- Department of Civil, Environmental and Architectural Engineering, University of Colorado at Boulder, 428 UCB, Boulder, CO 80309-0428, USA.
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33
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Electrostatic contributions to permeate flux behavior in single bovine serum albumin ultrafiltration. J Memb Sci 2011. [DOI: 10.1016/j.memsci.2010.10.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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34
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Almandoz C, Pagliero C, Ochoa A, Marchese J. Corn syrup clarification by microfiltration with ceramic membranes. J Memb Sci 2010. [DOI: 10.1016/j.memsci.2010.07.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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35
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Tung KL, Li YL, Wang S, Nanda D, Hu CC, Li CL, Lai JY, Huang J. Performance and effects of polymeric membranes on the dead-end microfiltration of protein solution during filtration cycles. J Memb Sci 2010. [DOI: 10.1016/j.memsci.2010.02.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Zhao YH, Zhu XY, Wee KH, Bai R. Achieving Highly Effective Non-biofouling Performance for Polypropylene Membranes Modified by UV-Induced Surface Graft Polymerization of Two Oppositely Charged Monomers. J Phys Chem B 2010; 114:2422-9. [DOI: 10.1021/jp908194g] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yong-Hong Zhao
- Division of Environmental Science and Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
| | - Xiao-Ying Zhu
- Division of Environmental Science and Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
| | - Kin-Ho Wee
- Division of Environmental Science and Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
| | - Renbi Bai
- Division of Environmental Science and Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
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37
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Sarkar B, DasGupta S, De S. Electric field enhanced fractionation of protein mixture using ultrafiltration. J Memb Sci 2009. [DOI: 10.1016/j.memsci.2009.05.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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38
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Sarkar B, Sengupta A, De S, DasGupta S. Prediction of permeate flux during electric field enhanced cross-flow ultrafiltration—A neural network approach. Sep Purif Technol 2009. [DOI: 10.1016/j.seppur.2008.10.032] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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39
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Yeu S, Lunn JD, Rangel HM, Shantz DF. The effect of surface modifications on protein microfiltration properties of Anopore™ membranes. J Memb Sci 2009. [DOI: 10.1016/j.memsci.2008.11.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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40
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Wang F, Tarabara VV. Pore blocking mechanisms during early stages of membrane fouling by colloids. J Colloid Interface Sci 2008; 328:464-9. [PMID: 18848335 DOI: 10.1016/j.jcis.2008.09.028] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Revised: 09/08/2008] [Accepted: 09/10/2008] [Indexed: 10/21/2022]
Abstract
A method based on a simple linear regression fitting was proposed and used to determine the type, the chronological sequence, and the relative importance of individual fouling mechanisms in experiments on the dead-end filtration of colloidal suspensions with membranes ranging from loose ultrafiltration (UF) to nanofiltration (NF) to non-porous reverse osmosis (RO). For all membranes, flux decline was consistent with one or more pore blocking mechanisms during the earlier stages and with the cake filtration mechanism during the later stages of filtration. For ultrafiltration membranes, pore blocking was identified as the largest contributor to the observed flux decline. The chronological sequence of blocking mechanisms was interpreted to depend on the size distribution and surface density of membrane pores. For salt-rejecting membranes, the flux decline during the earlier stages of filtration was attributed to either intermediate blocking of relatively more permeable areas of the membrane skin, or to the cake filtration in its early transient stages, or a combination of these two mechanisms. The findings emphasize the practical importance of the clear identification of, and differentiation between mechanisms of pore blocking and cake formation as determining the potential for the irreversible fouling of membranes and the efficiency of membrane cleaning.
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Affiliation(s)
- Fulin Wang
- Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48824, USA
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41
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Li Y, Bi J, Zhou W, Huang Y, Sun L, Zeng AP, Ma G, Su Z. Characterization of the large size aggregation of Hepatitis B virus surface antigen (HBsAg) formed in ultrafiltration process. Process Biochem 2007. [DOI: 10.1016/j.procbio.2006.08.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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42
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Käppler T, Posten C. Fractionation of proteins with two-sided electro-ultrafiltration. J Biotechnol 2007; 128:895-907. [PMID: 17275942 DOI: 10.1016/j.jbiotec.2007.01.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2006] [Revised: 12/22/2006] [Accepted: 01/02/2007] [Indexed: 11/22/2022]
Abstract
Downstream processing is a major challenge in bioprocess industry due to the high complexity of bio-suspensions itself, the low concentration of the product and the stress sensitivity of the valuable target molecules. A multitude of unit operations have to be joined together to achieve an acceptable purity and concentration of the product. Since each of the unit operations leads to a certain product loss, one important aim in downstream-research is the combination of different separation principles into one unit operation. In the current work a dead-end membrane process is combined with an electrophoresis operation. In the past this concept has proven successfully for the concentration of biopolymers. The present work shows that using different ultrafiltration membranes in a two-sided electro-filter apparatus with flushed electrodes brought significant enhancement of the protein fractionation process. Due to electrophoretic effects, the filtration velocity could be kept on a very high level for a long time, furthermore, the selectivity of a binary separation process carried out exemplarily for bovine serum albumin (BSA) and lysozyme (LZ) could be greatly increased; in the current case up to a value of more than 800. Thus the new two-sided electro-ultrafiltration technique achieves both high product purity and short separation times.
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Affiliation(s)
- Tobias Käppler
- University of Karlsruhe, Institute of Engineering in Life Sciences, Division Bioprocess Engineering, Kaiserstr. 12, Geb. 30.70, 76128 Karlsruhe, Germany.
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43
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Hughes DJ, Cui Z, Field RW, Tirlapur UK. Membrane fouling by cell-protein mixtures: In situ characterisation using multi-photon microscopy. Biotechnol Bioeng 2007; 96:1083-91. [PMID: 16933334 DOI: 10.1002/bit.21113] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Fouling of the membrane by cell and protein mixtures can result in severe flux declines, leading to the eventual need to clean or replace the membrane. In this study multi-photon microscopy, a fluorescence-based technique is used to 3-D image in situ the fouling of microfiltration membranes by suspensions containing combinations of washed yeast, bovine serum albumin (BSA) and ovalbumin. Appropriate fluorescent labelling allows the three foulant species to be clearly identified. Images correlate well with filtration data and clearly show the cake of yeast cells capturing protein aggregates. The proteins exhibited very different filtration behaviour. When filtering washed yeast together with ovalbumin and/or a 50:50 mixture by mass of BSA and ovalbumin, the ovalbumin fouling dominates the system. Capture of aggregates by the cake did not reduce fouling of the membrane by the protein and increased the resistance of the cake. For mixtures of BSA and washed yeast, the presence of a cake of yeast cells did reduce fouling of the membrane by the protein, however, the extra resistance due to the cake resulted in a flux lower than that when filtering BSA alone.
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Affiliation(s)
- David J Hughes
- Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK
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44
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45
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Datta S, Ray PD, Nath A, Bhattacharyya D. Recognition based separation of HIV-Tat protein using avidin–biotin interaction in modified microfiltration membranes. J Memb Sci 2006. [DOI: 10.1016/j.memsci.2006.01.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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46
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Chellam S, Xu W. Blocking laws analysis of dead-end constant flux microfiltration of compressible cakes. J Colloid Interface Sci 2006; 301:248-57. [PMID: 16753173 DOI: 10.1016/j.jcis.2006.04.064] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2006] [Revised: 04/20/2006] [Accepted: 04/20/2006] [Indexed: 11/30/2022]
Abstract
New blocking law models for dead-end constant flux microfiltration of colloids forming cakes that compressed in a linear and power law manner were derived. Constant pressure and constant flux experiments were performed using bacteria, colloidal silica, and treated natural waters to validate these new models and quantitatively verify blocking law predictions on the role of cake compressibility in microfilter fouling. Statistically invariant values of cake specific resistance and compressibility were obtained for constant flux and constant pressure operation for each feed suspension. This suggests that colloids formed cakes whose hydraulic resistance is dominated by a morphology that did not depend on their mode of deposition, confirming that the cake permeability was determined by the instantaneous pressure. Additionally, an inverse relationship between extracellular polymeric substances (EPS) secreted by bacteria and hydrodynamic flux restoration procedures was obtained demonstrating the importance of linking EPS to backwashing frequency when bacteria are present in the feed water.
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Affiliation(s)
- Shankararaman Chellam
- Department of Civil and Environmental Engineering, 4800 Calhoun Road, University of Houston, Houston, TX 77204-4003, USA.
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47
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Sun G, Chu CC. Synthesis, characterization of biodegradable dextran–allyl isocyanate–ethylamine/polyethylene glycol–diacrylate hydrogels and their in vitro release of albumin. Carbohydr Polym 2006. [DOI: 10.1016/j.carbpol.2006.01.015] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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48
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Hughes DJ, Cui Z, Field RW, Tirlapur UK. In situ three-dimensional characterization of membrane fouling by protein suspensions using multiphoton microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:6266-72. [PMID: 16800685 DOI: 10.1021/la053388q] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Fouling of microfiltration membranes leads to severe flux declines and the need to clean or replace the membrane. In situ 3D characterization of protein fouling both on the surface and within the pores of the membrane was achieved using multiphoton microscopy. Time-lapse images of the fouled membrane were obtained for single suspensions and mixtures of fluorescently labeled bovine serum albumin and ovalbumin. Deposited protein aggregates were visible on the membrane and evidently play an important role in fouling. A combination of 3D images and resistance versus time data was used to identify the dominant fouling mechanism. Fouling is initially internally dominated, but after 1 and 15 min for ovalbumin and bovine serum albumin, respectively, the fouling becomes externally dominated. This is in good agreement with two-stage protein fouling models.
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Affiliation(s)
- David J Hughes
- Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK
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