Vapor permeation modeling of multi-component systems using a poly(dimethylsiloxane) membrane

Lue, Shingjiang Jessie; Chen, Wen Wei; Wu, Su Yu; Wang, Li Ding; Kuo, Chun Hung

doi:10.1016/j.memsci.2008.01.001

Cited by 21 publications

(1 citation statement)

References 29 publications

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“…Pervaporation mass transport in nonporous dense membranes is often described by the solution diffusion mechanism where the diffusion is typically described by Fick's first law [30,31]. The driving force is the difference in activity or fugacity of the i th species given by Equation 3.…”

Section: Overall Mass Transfer Coefficient and Permeabilitymentioning

confidence: 99%

Allylcyclohexylamine functionalized siloxane polymer and its phase separated blend as pervaporation membranes for 1,3-propanediol enrichment from binary aqueous mixtures

Kanjilal

Noshadi

McCutcheon

et al. 2015

Journal of Membrane Science

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This work reports the synthesis of a novel allylcyclohexylamine functionalized siloxane and its phase separated blend with styrene-butyl acrylate copolymer and their application for pervaporative enrichment of 1,3-propanediol from dilute aqueous solutions. The phase separated blend allowed for the recovery of mechanical strength lost due to functionalization without loss in separation performance. Separation factors of 9-15 were achieved with functionalization levels of 50-90%, while 1,3-propanediol flux was 5.5-5.8g/m 2 h. Separation efficiency increased with functionalization and decreased with increasing temperature and feed concentration. Solution diffusion model was used to compute the overall mass transfer coefficients, concentration polarization and intrinsic material mass transport properties. The overall mass transfer coefficient for 1,3-propanediol was between 1.0. 10-7-1.4. 10-7 m/s while the boundary layer mass transfer coefficient ranged from 5. 10-7 m/s to 18. 10-7 m/s indicating the dominance of the membrane on the transport resistance. A computation of Hansens solubility parameters by a group contribution method was carried out to underscore the results. The membrane, with its good cost/performance tradeoff and excellent mechanical integrity, offers the possibility of fabrication into modules and scale up.

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Section: Overall Mass Transfer Coefficient and Permeabilitymentioning

confidence: 99%

Allylcyclohexylamine functionalized siloxane polymer and its phase separated blend as pervaporation membranes for 1,3-propanediol enrichment from binary aqueous mixtures

Kanjilal

Noshadi

McCutcheon

et al. 2015

Journal of Membrane Science

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Vapor Permeation: Theory and Modelling Perspectives

2018

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Gas Permeation through Polydimethylsiloxane Membranes: Comparison of Three Model Combinations

et al. 2012

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The modeling of a gas mixture permeating through a polymeric membrane can be achieved by the combination of a mass transfer model with a thermodynamic model. In this study, three model combinations, i.e., the combination of Fick's law with Henry's law (F‐H), that of Fick's law with the UNIQUAC equation (F‐U), and that of the Maxwell‐Stefan equation with the UNIQUAC equation (MS‐U), were solved by iteration computer procedure to predict the separation performance of both binary and ternary gas mixtures permeating through a polydimethylsiloxane membrane. The predicted results were analyzed in detail and compared with experimental results. It was found that there are remarkable differences among the considered model combinations in predicting separation performance, and these differences tend to become larger with increasing solubility. Among the three considered model combinations, MS‐U gives the prediction closest to the experimental results. Its advantage over the other two model combinations should be due to the proper estimation of the permeate solubility by the UNIQUAC equation and the reasonable consideration of mass transfer resistance by the Maxwell‐Stefan equation.

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Vapor permeation modeling of multi-component systems using a poly(dimethylsiloxane) membrane

Cited by 21 publications

References 29 publications

Allylcyclohexylamine functionalized siloxane polymer and its phase separated blend as pervaporation membranes for 1,3-propanediol enrichment from binary aqueous mixtures

Allylcyclohexylamine functionalized siloxane polymer and its phase separated blend as pervaporation membranes for 1,3-propanediol enrichment from binary aqueous mixtures

Vapor Permeation: Theory and Modelling Perspectives

Gas Permeation through Polydimethylsiloxane Membranes: Comparison of Three Model Combinations

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