Solvent-dependent permeability in asymmetric ceramic membranes with tortuous or non-tortuous mesopores

Bothun, Geoffrey D.; Niu, Qian; Ilias, Shamsuddin

doi:10.1016/j.memsci.2008.09.026

Cited by 9 publications

(2 citation statements)

References 26 publications

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“…Still, at the highest temperature (45 °C), the flux of NF270 in water–acetonitrile was lower than its average flux in water. Such solvent flux behavior was reported previously for polymeric as well as ceramic membranes. , Here, we report for the first time that NF270 operated with small amounts of acetonitrile in a water feed would exhibit an evolving flux behavior with obvious implications on the filtration performance. Interestingly, that behavior did not seem to permanently alter the membrane material.…”

Section: Resultssupporting

confidence: 83%

Development of a Solvent-Compatible High-Throughput Static Filtration Test Equipment

Fadil

Chojecki

Bashir

et al. 2022

Ind. Eng. Chem. Res.

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A novel laboratory equipment has been constructed to allow research in the development of solvent-resistant and solvent-tolerant nanofiltration applications. The equipment can control six parallel lines while concurrently feeding different solvents or mixtures of solvents over membrane samples housed in individual dead-end cells. Control feedback between the solvent flow (up to 40 g h–1) and pressure developing over the membrane sample (up to 40 bar(a)) is realized independently for each line. The feedback enables one to set experiments in either a constant-flow or constant-pressure operation mode. At all times, the temperature of the process (up to 80 °C) is controlled and referenced for an accurate evaluation of the apparent permeability, accounting for changes in the physical properties of the used solvent (i.e., viscosity and density). The test equipment can be employed in long-term operations, initially following changes in the permeability of a fresh membrane during preconditioning (washing, swelling, and/or compacting), with subsequent process studies assessing the properties of the settled polymeric structures relevant in filtration.

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Section: Resultssupporting

confidence: 83%

Development of a Solvent-Compatible High-Throughput Static Filtration Test Equipment

Fadil

Chojecki

Bashir

et al. 2022

Ind. Eng. Chem. Res.

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“…Typically, the dependence of the permeate flux (J v ) on the applied pressure (ΔP) follows a linear relationship with high correlation coefficients, and the solvent permeability corresponds to the slope of this straight line. 21 Results obtained for both membranes with ultrapure water and aqueous hydrogen peroxide are graphed in Supporting Information Figures S1 and S2 (PA data from previous work 14 ).…”

Section: Resultsmentioning

confidence: 99%

Effective Lifetime Study of Commercial Reverse Osmosis Membranes for Optimal Hydrogen Peroxide Ultrapurification Processes

Abejón

Garea

Irabien

2013

Ind. Eng. Chem. Res.

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The present work is focused on the effective lifetime of reverse osmosis membranes when they are applied to the ultrapurification of aqueous hydrogen peroxide solutions, considering the very exigent purity requirements in such an oxidant medium. The comparison of commercial polyamide and cellulose acetate membranes was performed from experimental data of permeate flows and solute rejections. The obtained experimental results were adjusted to the Kedem−Katchalsky membrane transport model. The analysis of the time behavior of the membranes and the effective lifetime determination are essential in the evaluation of the economic aspects of the industrial scale installation as these properties determine the replacement rate of the membrane modules, especially for resulting extremely short effective lifetimes (only a few days). A logistic decay model was proposed for the description of the rejection coefficients of solutes as functions of the operating time. Lastly, an optimization routine was carried out to obtain optimum values for operation variables to maximize the economics of the hydrogen peroxide ultrapurification process.

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Characterization of Ceramic Membranes

2007

Ceramic Membranes for Separation and Reaction

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Solvent-dependent permeability in asymmetric ceramic membranes with tortuous or non-tortuous mesopores

Cited by 9 publications

References 26 publications

Development of a Solvent-Compatible High-Throughput Static Filtration Test Equipment

Development of a Solvent-Compatible High-Throughput Static Filtration Test Equipment

Effective Lifetime Study of Commercial Reverse Osmosis Membranes for Optimal Hydrogen Peroxide Ultrapurification Processes

Characterization of Ceramic Membranes

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