Towards controlled fouling and rejection in dead-end microfiltration of nanoparticles – Role of electrostatic interactions

Trzaskuś, Krzysztof; Vos, Wiebe M. de; Kemperman, A.J.B.; Nijmeijer, DC Kitty

doi:10.1016/j.memsci.2015.06.047

Cited by 28 publications

(34 citation statements)

References 37 publications

(61 reference statements)

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“…This is consistent with the analysis on the effect of HA adsorption on surface charge status of TiO 2 . It was reported earlier that HA addition brought greater electronegativity to the TiO 2 surface, therefore resulting in stronger electrostatic repulsion and more stable suspensions [7].…”

Section: Physicochemical Characterization Of Model Foulantsmentioning

confidence: 94%

“…As an important emerging membrane foulant, the fouling behaviors of nanoparticles have attracted great attentions in recent years [7][8][9][10]. However, these studies on membrane fouling behaviors were merely worked with individual nanoparticles.…”

mentioning

confidence: 99%

“…According to xDLVO theory, LW as well as AB interactions are also considered to contribute to membrane fouling mechanisms, and the effect of EL interaction is not a key factor influencing the total interaction. However, substantial efforts have been spent on the influence of electrostatic interactions during nanoparticle membrane fouling [7,[10][11]. Not much is known on the fouling mechanism of nanoparticles in the presence of NOM and whether the xDLVO approach is feasible to predict their membrane fouling.…”

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confidence: 99%

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Assessing Synergistic Ultrafiltration Membrane Fouling by TiO2 Nanoparticles and Humic Acid Using Interaction Energy Analysis

Tian¹,

Sun²,

Sun³

et al. 2017

Pol. J. Environ. Stud.

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IntroductionRecently, engineered nanoparticles have been widely used in numerous industrial products, resulting in an increasing discharge of nanoparticles into aquatic systems [1][2]. Engineered nanoparticles have been observed to be toxic to microbes, plants, animals, and ecosystems [3]. As a result, engineered nanoparticles represent an emerging category of foulants. More attention has been paid to how engineered nanoparticles will be removed by -and impact the performance of -wastewater treatment systems [4]. Ultrafiltration (UF) has been acknowledged as a promising technology for removing nanoparticles due to its high-quality effluent, reliability in operation, Pol. J. Environ. Stud. Vol. 26, No. 5 (2017), 2259-2266 AbstractThis research attempts to elucidate the effect of humic acid (HA) on TiO 2 nanoparticle ultrafiltration (UF) membrane fouling, and quantitatively analyze the synergistic membrane fouling mechanisms using interaction energies. The extended Derjaguin-Landau-Verwey-Overbeek (xDLVO) theory was employed to analyze the interaction energies and predict UF membrane fouling. Membrane fouling effects were studied during the dead-end filtration of individual TiO 2 and HA-TiO 2 mixtures using two kinds of polymeric UF membranes. It was found that HA-TiO 2 mixtures lead to greater flux declines than individual TiO 2 . For specific foulant, the hydrophobic PVDF membrane showed relative severe membrane fouling than hydrophilic PES membrane. As for the HA-TiO 2 mixture, much higher irreversible fouling was observed compared with that of individual TiO 2 . Moreover, this study highlights the importance of HA concentration in synergistic fouling effects of the HA-TiO 2 mixture. The increase of HA concentration caused an increase of contact angle and lower interaction energy, thus aggravating membrane fouling. Results illustrated that synergistic membrane fouling by TiO 2 and HA could be successfully explained using the xDLVO analysis. The extent of membrane fouling turned out to be dominated by Lewis acid-base interaction.

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Section: Physicochemical Characterization Of Model Foulantsmentioning

confidence: 94%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Assessing Synergistic Ultrafiltration Membrane Fouling by TiO2 Nanoparticles and Humic Acid Using Interaction Energy Analysis

Tian¹,

Sun²,

Sun³

et al. 2017

Pol. J. Environ. Stud.

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“…The fouling problem is currently the main disadvantage of membranes technology because it entails high cleaning and replacing costs . How the fouling reduces the flow is a subject that has been studied for several years and in which contributions are still being made today …”

Section: Introductionmentioning

confidence: 99%

“…[13,14] How the fouling reduces the flow is a subject that has been studied for several years and in which contributions are still being made today. [15][16][17][18] The need for an approach that alleviates concerns related to safety, toxicology, and environmental problems has generated interest in "green" electrospinning processes. For some water-soluble polymers, electrospinning can be performed in aqueous solutions, and a waterresistant membrane is then achieved using an environmentally friendly crosslinker and a post-manufactured treatment.…”

Section: Introductionmentioning

confidence: 99%

Reversible swelling as a strategy in the development of smart membranes from electrospun polyvinyl alcohol nanofiber mats

Cimadoro

Goyanes

2020

Journal of Polymer Science

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This work presents an electrospun nanofibrous membrane for water treatment, designed to reduce its pores through polymer swelling to retain contaminants, and after that, reopening them for easy cleaning. It consists of a polyvinyl alcohol (PVA) mat crosslinked with a natural agent to avoid water solubility but allow a high swelling of its nanofibers. Then, when the membrane is brought into contact with water, a transitory state occurs during which nanofibers increase their diameter 68%, closing the pores between them. For studying the swelling reversal effect, distilled water filtering was used observing a decrease in the permeate flow over time until a steady state is reached. This phenomenon is explained by the closure of pores, and it is described with a fouling model widely used in the literature. Thanks to this decrease in the pore size, the membrane achieves a rejection rate much higher than conventional PVA electrospun membranes, being capable to retain 20 nm nanoparticles with a rejection rate up to 99%. Swelling is reversible through a simple drying process, which allows reopening the pores and cleaning the fouling easily. Both the membrane and its use strategy extend the capacity of electrospun mats in a sustainable way.

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Virus harvesting in perfusion culture: Choosing the right type of hollow fiber membrane

Nikolay

Grooth

Genzel

et al. 2020

Biotech & Bioengineering

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The use of bioreactors coupled to membrane‐based perfusion systems enables very high cell and product concentrations in vaccine and viral vector manufacturing. Many virus particles, however, are not stable and either lose their infectivity or physically degrade resulting in significant product losses if not harvested continuously. Even hollow fiber membranes with a nominal pore size of 0.2 µm can retain much smaller virions within a bioreactor. Here, we report on a systematic study to characterize structural and physicochemical membrane properties with respect to filter fouling and harvesting of yellow fever virus (YFV; ~50 nm). In tangential flow filtration perfusion experiments, we observed that YFV retention was only marginally determined by nominal but by effective pore sizes depending on filter fouling. Evaluation of scanning electron microscope images indicated that filter fouling can be reduced significantly by choosing membranes with (i) a flat inner surface (low boundary layer thickness), (ii) a smooth material structure (reduced deposition), (iii) a high porosity (high transmembrane flux), (iv) a distinct pore size distribution (well‐defined pore selectivity), and (v) an increased fiber wall thickness (larger effective surface area). Lowest filter fouling was observed with polysulfone (PS) membranes. While the use of a small‐pore PS membrane (0.08 µm) allowed to fully retain YFV within the bioreactor, continuous product harvesting was achieved with the large‐pore PS membrane (0.34 µm). Due to the low protein rejection of the latter, this membrane type could also be of interest for other applications, that is, recombinant protein production in perfusion cultures.

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Towards controlled fouling and rejection in dead-end microfiltration of nanoparticles – Role of electrostatic interactions

Cited by 28 publications

References 37 publications

Assessing Synergistic Ultrafiltration Membrane Fouling by TiO2 Nanoparticles and Humic Acid Using Interaction Energy Analysis

Assessing Synergistic Ultrafiltration Membrane Fouling by TiO2 Nanoparticles and Humic Acid Using Interaction Energy Analysis

Reversible swelling as a strategy in the development of smart membranes from electrospun polyvinyl alcohol nanofiber mats

Virus harvesting in perfusion culture: Choosing the right type of hollow fiber membrane

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