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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >Experimental study of vapor permeation of G5-G7 alkane through PDMS membrane
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Experimental study of vapor permeation of G5-G7 alkane through PDMS membrane

机译：实验研究G5-G7蒸汽渗透烷烃通过PDMS膜

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摘要

Vapor permeation through dense membrane is regarded as an effectively way to separate volatile organic compounds (VOC) from industrial gas stream. This study proposes a new method to get the solubility and diffusivity of pure VOC vapor in dense membrane. C5H_(12), C6H_(14) and C7H_(16) were selected as sample VOC components to conduct newly developed sorption experiment with polydimethylsiloxane (PDMS) membrane. For each considered VOC component, its solubility was obtained from measured sorption equilibrium concentration in PDMS membrane, and its diffusivity was determined by fitting diffusion equation to the measured transient concentration of VOC component. The permeation behavior of VOCs in PDMS membrane was analyzed in terms of their solubility, diffusivity and permeability. Furthermore, the obtained solubility of these VOC components was utilized to get the vapor-membrane interaction parameters in UNIQUAC model. This opens an effective way to obtain the activity coefficient of VOC components for predicting their permeation performance in PDMS membrane.
机译：蒸汽通过致密膜渗透被认为是单独的一个有效方法从工业挥发性有机化合物(VOC)气体流。得到纯挥发性有机化合物的溶解度和扩散系数蒸汽在致密膜。C7H_(16)被选为样本VOC组件进行新开发的吸附实验与聚二甲基硅氧烷(PDMS)膜。每个认为VOC组件,其溶解度从测量获得吸附平衡浓度在PDMS膜,它的扩散系数是由合适的扩散测量瞬态浓度方程VOC的组件。在他们的PDMS膜进行了分析溶解性、扩散性和渗透性。此外,获得这些挥发性有机化合物的溶解度组件是利用vapor-membrane相互作用参数UNIQUAC、模型。打开一个有效的方法来获取活动为预测系数VOC组件他们在PDMS膜渗透性能。

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