Foulant Adsorption to Heterogeneous Surfaces with Zwitterionic Nanoscale Domains

Dudchenko, Alexander V.; Bengani-Lutz, Prity; Asatekin, Ayşe; Mauter, Meagan S.

doi:10.1021/acsapm.0c00738

Cited by 14 publications

(14 citation statements)

References 61 publications

(101 reference statements)

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“…22,23 Due to the strong hydration of the zwitterions, these membranes exhibit unprecedented fouling resistance, fully retaining their permeability during the filtration of real and simulated wastewater streams containing high concentrations of oil and biomacromolecules. 22,23,27,28 This makes r-ZAC membranes extremely promising for treating feeds such as challenging wastewater streams or littoral seawater.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Random zwitterionic amphiphilic copolymers (r-ZACs) are random/statistical copolymers of zwitterionic and hydrophobic monomers. Strong zwitterion–zwitterion interactions drive microphase separation into bicontinuous networks of zwitterionic and hydrophobic nanodomains. − TFC membranes with r-ZAC-selective layers can be prepared by coating a thin (∼1 μm) copolymer layer onto a porous support. ,,, During aqueous filtration, the zwitterionic domain functions as a network of hydrophilic nanochannels for the transport of water and small solutes. , Due to the strong hydration of the zwitterions, these membranes exhibit unprecedented fouling resistance, fully retaining their permeability during the filtration of real and simulated wastewater streams containing high concentrations of oil and biomacromolecules. ,,, This makes r-ZAC membranes extremely promising for treating feeds such as challenging wastewater streams or littoral seawater.…”

Section: Introductionmentioning

confidence: 99%

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Zwitterionic Ion-Selective Membranes with Tunable Subnanometer Pores and Excellent Fouling Resistance

Lounder

Asatekin

2021

Chem. Mater.

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Nanofiltration (NF) membranes are an energyefficient, scalable technology for water treatment and reuse. However, they are prone to fouling and offer limited selectivity between ions, hampering their use in water recovery and reuse. This work utilizes scalable self-assembly of zwitterionic copolymers combined with a novel cross-linking approach to develop membranes distinguished by exceptional mono/divalent ion selectivity, tunable pore size, and complete resistance to irreversible fouling. Extended cross-linking reduces the pore size to ∼0.9 nm, the smallest pore size reported for self-assembled copolymer membranes to date. These membranes achieve >99.2% SO 4 2− rejection and a Cl − /SO 4 2− selectivity of 101, demonstrating their promise for energy-efficient sulfate removal and other water treatment applications.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Zwitterionic Ion-Selective Membranes with Tunable Subnanometer Pores and Excellent Fouling Resistance

Lounder

Asatekin

2021

Chem. Mater.

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“…ZAC membranes have proven to exhibit unmatched fouling resistance due to the presence of highly hydrated zwitterionic groups covering their surfaces. [ 65 ]…”

Section: Resultsmentioning

confidence: 99%

“…ZAC membranes have proven to exhibit unmatched fouling resistance due to the presence of highly hydrated zwitterionic groups covering their surfaces. [65] We tested the resistance of these thiol-ene cross-linked ZAC membranes to fouling by various foulants. A commercial stateof-the-art nanofiltration membrane (NP-30) was also used as a benchmark to compare the fouling data with our cross-linked membrane.…”

Section: Fouling Resistancementioning

confidence: 99%

Ultra‐Fast Click Modification of Self‐Assembled Zwitterionic Copolymer Membranes for Enhanced Ion Selectivity

Mondal

Lounder

Mazzaferro

et al. 2022

Adv Materials Inter

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Membranes that can separate small molecules and ions are of immense interest in various separations. Self‐assembling zwitterionic amphiphilic copolymers (ZACs) are extremely promising as exceptionally fouling‐resistant membrane selective layers with narrow size cut‐offs. However, it is difficult to tune their effective pore size within time frames compatible with roll‐to‐roll manufacturing. We report a novel, ultra‐fast approach for tuning the pore size of ZAC‐based membranes through thiol‐ene click chemistry that brings the needed post‐modification time from tens of minutes to only 10–40 s, making its integration feasible in large scale manufacturing systems. Resultant membranes have enhanced organic molecule and salt rejections, resulting in tunable mono‐/divalent ion selectivity. For instance, cross‐linking increases Na2SO4 rejections from <20% to up to 83%, while NaCl rejection remains below 30%. Furthermore, these membranes completely resist fouling by oil and proteins, outperforming commercial membranes. These results suggest that our cross‐linked membranes have the potential to be used in separations in the food industry, pharmaceutical manufacturing, and wastewater treatment.

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“…[56] Adhesion is influenced by the material properties such as wettability, [24,57] surface free energy, [56] charge, [24] topography or texture, [24,33,34,[45][46][47][48]58] elastic modulus, [24] and/or micro-or nanochemical morphology. [59,60]…”

Section: Parameters Affecting Settlementmentioning

confidence: 99%

Bioinspiration and Microtopography As Nontoxic Strategies for Marine Bioadhesion Control

Védie

Brisset

Briand

et al. 2021

Adv Materials Inter

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the hulls could limit the undesirable effects but together increase the costs both in time and money. Consequently, biofouling is costing billions of dollars each year to naval industry. [8,9] When talking about colonization on marine sensors, Delauney et al. showed that biofouling affected the sensitivity and caused drift of measurements of the device over time. [10] Biofouling is also a big issue in the case of renewable marine energy devices. Biofouling on wave energy converters (WEC) leads to the decrease in efficiency of the devices by increasing drag and is also responsible of local biocorrosion. [11,12] The maintenance of such structure is risky and expensive, requiring period of good weather and calm sea state, among others. [13] Maintenance is all the more necessary during summer when fouling is the most intensive, due to higher seawater temperature, solar irradiation, and number of organisms. [13,14] In aquaculture, biofouling is also a major concern. Fitridge et al. reviewed all the effect of marine biofouling and its control in aquaculture. [15] Indeed, it can be responsible of cage deformation and structural fatigue, it will reduce the quality of water by limiting oxygen availability or increase the disease risk for fish species. Considering shellfish, biofouling can be responsible of mortality, shell erosion, competition for food and space, or disturbance in shell growth, for instance.In desalination plants, settlement, and accumulation of foulers onto the surface of the membranes or its pores lead to a deterioration of the filter. Salt rejection is negatively affected by the degradation of the membrane due to fouling. [16] Preventing fouling appears consequently a major concern for naval and marine industry, including sustainable domains like aquaculture, desalination plant, or the development of marine renewable energy devices.Protecting marine infrastructures has been the main matter of concern since the beginning of maritime transports. Tar, wax, arsenic, asphalt, or pitch are thought to be components used during antiquity for the first antifouling coatings. [3,5] Phoenicians and Carthaginians possibly used copper plates to protect their ships. [3,5] In the early 18th century, boats started to be made of steel. Zinc, nickel, and lead were chosen instead of copper plates to protect ships, because of corrosion matter. [3,17] From the late 18th century, heavy metal were more and more Marine biofouling is the unwanted accumulation of biological origin matters on submerged surfaces. Biofouling is a major economic burden on navy and commercial ships, as well as civil structures, piping systems, sensors, and power generating facilities. Due to the vast variety of marine organisms that colonize submerged surfaces, no surface has been found that is completely resistant to marine biofouling. The development of bioinspired and textured surfaces and their effects on marine biofouling are reviewed here. Different parameters such as mechanical properties, wettability, and surface topo graphy are shown to have...

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Foulant Adsorption to Heterogeneous Surfaces with Zwitterionic Nanoscale Domains

Cited by 14 publications

References 61 publications

Zwitterionic Ion-Selective Membranes with Tunable Subnanometer Pores and Excellent Fouling Resistance

Zwitterionic Ion-Selective Membranes with Tunable Subnanometer Pores and Excellent Fouling Resistance

Ultra‐Fast Click Modification of Self‐Assembled Zwitterionic Copolymer Membranes for Enhanced Ion Selectivity

Bioinspiration and Microtopography As Nontoxic Strategies for Marine Bioadhesion Control

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