New insights into the fouling mechanism of dissolved organic matter applying nanofiltration membranes with a variety of surface chemistries

Mustafa, Ghulam M.; Wyns, Kenny; Buekenhoudt, Anita; Meynen, Vera

doi:10.1016/j.watres.2016.02.030

Cited by 59 publications

(39 citation statements)

References 57 publications

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“…The dominant organic matter removal mechanism was found to be increased by the electrostatic interaction between charged model compound and positively charged membrane surface [32]. Current research also reports that membrane fouling can be determined by the surface chemistry such as foulant-membrane interactions [38]. Thus, protein fouling can be explained by the pH and ionic strength influence on the electrostatic interaction between positively charged MWCNT membrane and both charged proteins (BSA and Lys).…”

Section: Fouling Mechanisms Under Solution Chemistrymentioning

confidence: 98%

Protein fouling in carbon nanotubes enhanced ultrafiltration membrane: Fouling mechanism as a function of pH and ionic strength

Lee

Jeong

et al. 2017

Separation and Purification Technology

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CitationLee J, Jeong S, Ye Y, Chen V, Vigneswaran S, et al. (2016) Protein fouling in carbon nanotubes enhanced ultrafiltration membrane: Fouling mechanism as a function of pH and ionic strength. Separation and Purification Technology. Available: http:// dx.Please cite this article as: J. Lee, S. Jeong, Y. Ye, V. Chen, S. Vigneswaran, T. Leiknes, Z. Liu, Protein fouling in carbon nanotubes enhanced ultrafiltration membrane: Fouling mechanism as a function of pH and ionic strength, Separation and Purification Technology (2016), doi: http://dx. AbstractThe protein fouling behavior was investigated in the filtration of the multiwall carbon nanotube (MWCNT) composite membrane and commercial polyethersulfone ultrafiltration (PES-UF)membrane. The effect of solution chemistry such as pH and ionic strength on the protein fouling mechanism was systematically examined using filtration model such as complete pore blocking, intermediate pore blocking and cake layer formation. The results showed that the initial permeate flux pattern and fouling behavior of the MWCNT composite membrane were significantly influenced by pH and ionic strength while the effect of PES-UF membrane on flux was minimal. In a lysozyme (Lys) filtration, the severe pore blocking in the MWCNT membrane was made by the combined 2 effect of intra-foulant interaction (Lys-Lys) and electrostatic repulsion between the membrane surface and the foulant at pH 4.7 and 10.4, and increasing ionic strength where the foulant-foulant interaction and membrane-fouling interaction were weak. In a bovine serum albumin (BSA) filtration, severe pore blocking was reduced by less deposition via the electrostatic interaction between the membrane and foulant at pH 4.7 and 10.4 and increasing ionic strength, at which the interaction between the membrane and BSA became weak. For binary mixture filtration, the protein fouling mechanism was more dominantly affected by foulant-foulant interaction (Lys-BSA, Lys-Lys, and BSA-BSA) at pH 7.0 and increase in ionic strength. This research demonstrates that MWCNT membrane fouling can be alleviated by changing pH condition and ionic strength based on the foulant-foulant interaction and the electrostatic interaction between the membrane and foulant.Ultrapure water 1. Highlights• The MWCNT membrane was found to have very high sensitivity to the feed properties.• The MWCNT membrane considerably affected the initial flux and fouling behaviour.• Fouling in the MWCNT membrane could be alleviated by controlling solution chemistry.•Fouling was controlled by the membrane-foulant and foulant-foulant interaction.

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Section: Fouling Mechanisms Under Solution Chemistrymentioning

confidence: 98%

Protein fouling in carbon nanotubes enhanced ultrafiltration membrane: Fouling mechanism as a function of pH and ionic strength

Lee

Jeong

et al. 2017

Separation and Purification Technology

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“…A recent study has shown that the extent of flux decline in combined fouling is governed by: (a) the type of organic and colloidal foulants present in the feed solution; (b) the concentration of organic and colloid foulants; and (c) the ionic strength and/or concentration of cations 14 . Flux decline in combined fouling has been ascribed to a combination of increased hydraulic resistance to water flow imparted by the combined effects of the cake layer resistance, CECP effects, and organic‐calcium complexation 14,15 …”

Section: Introductionmentioning

confidence: 99%

Effect of multivalent cations on membrane‐foulant and foulant‐foulant interactions controlling fouling of nanofiltration membranes

Mahlangu

Mamba

Verliefde

2020

Polymers for Advanced Techs

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Insight was gained into the various factors influencing membrane fouling in the presence of different cations. Membrane‐foulant interaction energies were computed from contact angle measurements following the Lifshitz‐van der Waals/acid‐base approach. A unique approach was used to investigate cake‐enhanced concentration polarization (CECP) effects. Calcium worsened organic fouling through organic‐calcium complexation and increasing foulant affinity for the membrane surface, whereas magnesium and lanthanum had less influence on membrane fouling as they moderately decreased the foulants' affinity for the membrane surface. Fouling was facilitated by permeation drag and reduction in membrane‐foulant electrostatic repulsive interactions due to slight neutralization of foulant and membrane zeta potential. Although cake layers formed in the presence of magnesium and lanthanum had low resistance to water flow, the cake layers resulted in severe CECP effects. Initial membrane fouling rates related well to energies of adhesion, whereas later fouling rates did not show clear correlation to energies of cohesion.

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“…Differences in fouling propensity between membranes arise from differences in their physicochemical properties. Research has shown that surface roughness promotes membrane fouling [11,12,42,60]. Herein, SEM was used to compare the surface morphology of the NF90 membrane to that of the TFC QI membrane (Figure 7).…”

Section: Discussion Of Fouling Propensitymentioning

confidence: 99%

Evaluation of a nanoporous lyotropic liquid crystal polymer membrane for the treatment of hydraulic fracturing produced water via cross-flow filtration

Dischinger

Rosenblum

Noble

et al. 2019

Journal of Membrane Science

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Current commercial nanofiltration and reverse osmosis membranes are limited in scope and performance due to their physicochemical properties. Desalination of hydraulic fracturing wastewater poses a particular challenge to membrane filtration given the high concentrations of both organic compounds and salts present in these waters. The recently-developed nanoporous, bicontinuous cubic, lyotropic liquid crystal, thin-film-composite polymer membrane (TFC QI membrane), having unique physicochemical properties, enables an alternative treatment of hydraulic fracturing wastewater. Specifically, the TFC QI membrane recovers the organic compounds from this high-salinity wastewater, enabling biodegradation to occur after desalination. However, other performance criteria must be demonstrated for a membrane to reach application. The work presented herein demonstrates the stable performance of the TFC QI membrane during 66 h of cross-flow filtration of hydraulic fracturing produced water. Compared to the commercial NF90 membrane, the TFC QI membrane recovered a larger portion of the organic compounds, had a higher thickness-normalized water flux, and fouled less. The combination of the TFC QI membrane's selectivity with its reduced fouling propensity makes possible a treatment for hydraulic fracturing wastewater and other complex aqueous streams inaccessible by most commercial membranes, motivating the further study and development of the TFC QI membrane.

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New insights into the fouling mechanism of dissolved organic matter applying nanofiltration membranes with a variety of surface chemistries

Cited by 59 publications

References 57 publications

Protein fouling in carbon nanotubes enhanced ultrafiltration membrane: Fouling mechanism as a function of pH and ionic strength

Protein fouling in carbon nanotubes enhanced ultrafiltration membrane: Fouling mechanism as a function of pH and ionic strength

Effect of multivalent cations on membrane‐foulant and foulant‐foulant interactions controlling fouling of nanofiltration membranes

Evaluation of a nanoporous lyotropic liquid crystal polymer membrane for the treatment of hydraulic fracturing produced water via cross-flow filtration

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