Current Strategies for the Design of Anti-fouling Ion-Exchange Membranes

Han, Le

doi:10.1007/978-3-030-41295-1_2

Cited by 3 publications

(2 citation statements)

References 91 publications

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“…In most of these applications, ED systems are subject to organic fouling, as discussed in section . Strong hydrophobic interactions between the membrane and organic species can lead to irreversible adsorption and an increase in membrane resistance. , Surface modifications with polyelectrolytes have thus attracted much interest in the design of fouling-resistant IEMs. ,,, These modifications significantly increase the hydrophilicity of membrane surfaces and are simple to perform. Today, IEMs are manufactured by several companies, including DuPont (Nafion), Chemours (Nafion), ASTOM (Neosepta), AGC Chemicals (Selemion), and FUMATECH BWT (Fumasep), and much research has been devoted to improving the durability and lowering the cost of these membranes. ,,, …”

Section: Performance Comparisons and Process Intensificationmentioning

confidence: 99%

Electrochemical Methods for Water Purification, Ion Separations, and Energy Conversion

et al. 2022

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Agricultural development, extensive industrialization, and rapid growth of the global population have inadvertently been accompanied by environmental pollution. Water pollution is exacerbated by the decreasing ability of traditional treatment methods to comply with tightening environmental standards. This review provides a comprehensive description of the principles and applications of electrochemical methods for water purification, ion separations, and energy conversion. Electrochemical methods have attractive features such as compact size, chemical selectivity, broad applicability, and reduced generation of secondary waste. Perhaps the greatest advantage of electrochemical methods, however, is that they remove contaminants directly from the water, while other technologies extract the water from the contaminants, which enables efficient removal of trace pollutants. The review begins with an overview of conventional electrochemical methods, which drive chemical or physical transformations via Faradaic reactions at electrodes, and proceeds to a detailed examination of the two primary mechanisms by which contaminants are separated in nondestructive electrochemical processes, namely electrokinetics and electrosorption. In these sections, special attention is given to emerging methods, such as shock electrodialysis and Faradaic electrosorption. Given the importance of generating clean, renewable energy, which may sometimes be combined with water purification, the review also discusses inverse methods of electrochemical energy conversion based on reverse electrosorption, electrowetting, and electrokinetic phenomena. The review concludes with a discussion of technology comparisons, remaining challenges, and potential innovations for the field such as process intensification and technoeconomic optimization.

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Section: Performance Comparisons and Process Intensificationmentioning

confidence: 99%

Electrochemical Methods for Water Purification, Ion Separations, and Energy Conversion

et al. 2022

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“…AEM and CEM are most often used in the food industry with an aromatic matrix [ 43 , 50 ], which enters into the all mentioned above types of interactions with wine components. Furthermore, an increasing number of relatively inexpensive commercial ion-exchange membranes with an aliphatic matrix have recently been introduced.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Electrodialysis Performance in Tartrate Stabilization of a Red Wine Using Aliphatic and Aromatic Commercial and Modified Ion-Exchange Membranes

et al. 2023

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The application of electrodialysis for tartrate stabilization and reagent-free acidity correction of wine and juices is attracting increasing interest. New aliphatic membranes CJMC-3 and CJMA-3 and aromatic membranes CSE and ASE were tested to determine their suitability for use in these electrodialysis processes and to evaluate the fouling of these membranes by wine components for a short (6–8 h) operating time. Using IR spectroscopy, optical indication and measurement of surface contact angles, the chemical composition of the studied membranes, as well as some details about their fouling by wine components, was clarified. The current–voltage charsacteristics, conductivity and water-splitting capacity of the membranes before and after electrodialysis were analyzed. We found that in the case of cation-exchange membranes, complexes of anthocyanins with metal ions penetrate into the bulk (CJMC-3) or are localized on the surface (CSE), depending on the degree of crosslinking of the polymer matrix. Adsorption of wine components by the surface of anion-exchange membranes CJMA-3 and ASE causes an increase in water splitting. Despite fouling under identical conditions of electrodialysis, membrane pair CJMC-3 and CJMA-3 provided 18 ± 1 tartrate recovery with 31 · 10−3 energy consumption, whereas CSE and ASE provided 20 ± 1% tartrate recovery with an energy consumption of 28 · 10−3 Wh, in addition to reducing the conductivity of wine by 20 ± 1%. The casting of aliphatic polyelectrolyte films on the surface of aromatic membranes reduces fouling with a relatively small increase in energy consumption and approximately the same degree of tartrate recovery compared to pristine CSE and ASE.

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Challenges and opportunities for electro-driven desalination processes in sustainable applications

Deemer,

Xu,

Verduzco

et al. 2023

Current Opinion in Chemical Engineering

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Current Strategies for the Design of Anti-fouling Ion-Exchange Membranes

Cited by 3 publications

References 91 publications

Electrochemical Methods for Water Purification, Ion Separations, and Energy Conversion

Electrochemical Methods for Water Purification, Ion Separations, and Energy Conversion

Comparison of the Electrodialysis Performance in Tartrate Stabilization of a Red Wine Using Aliphatic and Aromatic Commercial and Modified Ion-Exchange Membranes

Challenges and opportunities for electro-driven desalination processes in sustainable applications

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