Numerical simulation of solute removal from a cross-flow past a row of parallel hollow-fiber membranes

Kirsh, V. A.; Баженов, С. Л.

doi:10.1016/j.seppur.2020.116834

Cited by 14 publications

(6 citation statements)

References 47 publications

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“…These two parameters can be obtained by eqn (17) and (18). 39 where Re is the Reynolds number, Sc is the Schmidt number and L is the characteristic length (m) of the respective channel. Re and Sc can be determined using eqn (19) and (20).where μ , ρ and u represent the dynamic viscosity (kg m −1 s −1 ), the density (kg m −3 ), and the velocity (m s −1 ) of the solution, respectively.…”

Section: Methodsmentioning

confidence: 99%

Construction of facilitated mass transfer composite membranes with triple-layer water nanochannel architecture for forward osmosis process using cGO-coated polysulfone separation membrane as the substrate

Shi

et al. 2022

Environ. Sci.: Nano

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Section: Methodsmentioning

confidence: 99%

Construction of facilitated mass transfer composite membranes with triple-layer water nanochannel architecture for forward osmosis process using cGO-coated polysulfone separation membrane as the substrate

Shi

et al. 2022

Environ. Sci.: Nano

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“…HF membranes (HFMs) are mostly prepared via the phase inversion method which gives a promising approach to membrane modi cation because it avoids extra processing steps to enable economical and low-cost manufacturing processes. HFMs have several advantages compared to at-sheet membranes, such as high packing density per unit volume in a membrane module, high surface area-to-volume ratios, easy handling, and the possibility of back ushing [3][4][5]. The anisotropic structure of HF membrane has a selective layer supported on a microporous substrate which can be both outside and inside the lumen.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Post-Treatment Methods and coating for Polysulfone Hollow Fiber Membranes

Sayed

Sorour

Abulnour

et al. 2023

Preprint

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The aim of the present work is to investigate the effect of post treatment of Polysulfone (PSf) hollow fiber membrane prepared by dry/wet spinning on the characteristics and performance of treated membranes. Also, the effect of coating of selected post-treated hollow fiber (HF) membrane on characteristics and performance is investigated. The Polysulfone hollow fiber membranes were prepared under controlled conditions. The post-treatments of HF membranes included treatment by soaking in magnesium sulphate 0.1%, water at 80 oC, sodium hypochlorite (0.1% ) and ethanol/isopropanol (0.1%). The last post-treated hollow fiber membranes were coated to form a thin polyamide layer via interfacial polymerization at controlled conditions. HF membranes were characterized by SEM, AFM, contact angle, porosity, and mechanical properties. The membrane performance with respect to water permeability under pressure up to 3 bar was investigated. The results of the investigation referred to the merits of each of post-treatment with respect to membrane hydrophobicity, membrane surface roughness and mechanical properties as will as water permeability. Further, the coating of post treated membrane produced membranes with low water permeability which could be suitable for membrane separation applications such as UF and NF. Testing of membrane rejection and water flux for different solutes and different conditions is recommended for future work.

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“…Membrane separation processes feature the benefits of low energy consumption, high separation performance and eco-friendliness, without the necessity of using chemical reagents compared to traditional methods of water treatment [1]. Polymer hollow fiber membranes have several benefits compared to flat-sheet membranes, such as high surface area-to-volume ratios, good flexibility and easy handling, a self-supporting system (no necessity of using support for membrane formation), relative ease of membrane module production, high packing density per unit volume in a membrane module, the possibility of back flushing and a low area of membrane equipment [2][3][4][5]. The phase inversion is the most commonly applied and is an important method for polymer membrane preparation.…”

Section: Introductionmentioning

confidence: 99%

Formation of Polysulfone Hollow Fiber Membranes Using the Systems with Lower Critical Solution Temperature

Plisko

Bildyukevich

Zhao

et al. 2021

Fibers

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This study deals with the investigation of the phase state of the polymer systems from polysulfone (PSF) with the addition of polyethylene glycol (PEG-400, Mn = 400 g·mol−1) and polyvinylpyrrolidone (PVP K-30, Mn = 40,000 g·mol−1) in N,N-dimethylacetamide (DMA), which feature lower critical solution temperatures (LCSTs). A fragment of the phase state diagram of the system PSF —PEG-400—PVP K-30—DMA was experimentally constructed in the following range of component concentrations: PSF 20–24 wt.%, PEG-400—35–38 wt.% and PVP—0–8 wt.%. It has been established that PVP addition substantially reduces the phase separation temperature down to 50–60 °C. Based on the obtained phase diagrams, a method for preparation of highly permeable hollow fiber membranes from PSF, which involves the processing of the dope solution at a temperature close to the LCST and the temperature of the bore fluid above the LCST, was proposed. Hollow fiber membranes with pure water flux of 1200 L·m−2·h−1 and a sponge-like macrovoid-free structure were obtained via LCST-thermally induced phase separation by free fall spinning technique.

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Numerical simulation of solute removal from a cross-flow past a row of parallel hollow-fiber membranes

Cited by 14 publications

References 47 publications

Construction of facilitated mass transfer composite membranes with triple-layer water nanochannel architecture for forward osmosis process using cGO-coated polysulfone separation membrane as the substrate

Construction of facilitated mass transfer composite membranes with triple-layer water nanochannel architecture for forward osmosis process using cGO-coated polysulfone separation membrane as the substrate

Comparison of Post-Treatment Methods and coating for Polysulfone Hollow Fiber Membranes

Formation of Polysulfone Hollow Fiber Membranes Using the Systems with Lower Critical Solution Temperature

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