Thermodynamic perspective on negative retention effects in nanofiltration of concentrated sodium chloride solutions

Kate, Antoon J.B. ten; Schutyser, M.A.I.; Kuzmanovic, B.; Westerink, J.B.; Manuhutu, F.; Bargeman, Gerrald

doi:10.1016/j.seppur.2020.117242

Cited by 10 publications

(2 citation statements)

References 42 publications

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“…The thermodynamics methods were also applied in other approaches. ten Kate et al 31 analyzed the negative effects during NF of concentrated NaCl solution based on the concept of chemical potential. The methods of classical thermodynamics were also used by Minelli and Sarti 32 .…”

Section: Irreversible Thermodynamics-based Modelsmentioning

confidence: 99%

Mathematical Simulation of Nanofiltration Process: State of Art Review

Huliienko,

Kornienko,

Muzyka

et al. 2024

ChChT

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A review of publications devoted to the mathematical simulation of the nanofiltration process was carried out, the advantages, limitations, and areas of application of various modeling approaches were determined. It was found that the most effective approaches are based on the extended Nernst-Planck equation, Donnan equilibrium, as well as methods of computational fluid dynamics and molecular dynamics. The use of software for solving nanofiltration simulation problems was considered.

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Section: Irreversible Thermodynamics-based Modelsmentioning

confidence: 99%

Mathematical Simulation of Nanofiltration Process: State of Art Review

Huliienko,

Kornienko,

Muzyka

et al. 2024

ChChT

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“…The PEM has a high charge density which leads to high salt passage, a relatively greater rejection of organics, and typically high mono/divalent salt selectivity [ 23 , 24 , 27 , 28 , 29 , 30 , 31 ]. It is known that extremely high selectivity can lead to negative rejections in the case of NF membranes [ 32 , 33 , 34 , 35 ], and this has been observed in PEM NF membranes as well [ 31 , 36 , 37 , 38 ]. Besides high selectivity, PEM membranes have further advantages compared to polyamide NF membranes, with a high resistance to oxidants, such as chlorine, a higher pH tolerance (in the case of strongly acidic/basic polyelectrolytes) [ 39 , 40 ], high self-healing ability [ 41 , 42 , 43 ] and, if the substrate allows, solvent resistance [ 44 , 45 ].…”

Section: Introductionmentioning

confidence: 99%

Dealcoholization of Unfiltered and Filtered Lager Beer by Hollow Fiber Polyelectrolyte Multilayer Nanofiltration Membranes—The Effect of Ion Rejection

et al. 2023

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Membrane-based beverage dealcoholization is a successful process for producing low- and non-alcoholic beer and represents a fast-growing industry. Polyamide NF and RO membranes are commonly applied for this process. Polyelectrolyte multilayer (PEM) NF membranes are emerging as industrially relevant species, and their unique properties (usually hollow fiber geometry, high and tunable selectivity, low fouling) underlines the importance of testing them in the food industry as well. To test PEM NF membranes for beer dealcoholization at a small pilot scale, we dealcoholized filtered and unfiltered lager beer with the tightest available commercial polyelectrolyte multilayer NF membrane (NX Filtration dNF40), which has a MWCO = 400 Da, which is quite high for these purposes. Dealcoholization is possible with a reasonable flux (10 L/m2h) at low pressures (5–8.6 bar) with a real extract loss of 15–18% and an alcohol passage of ~100%. Inorganic salt passage is high (which is typical for PEM NF membranes), which greatly affected beer flavor. During the dealcoholization process, the membrane underwent changes which substantially increased its salt rejection values (MgSO4 passage decreased fourfold) while permeance loss was minimal (less than 10%). According to our sensory evaluation, the process yielded an acceptable tasting beer which could be greatly enhanced by the addition of the lost salts and glycerol.

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