Ethanol mass transfer during pervaporation with PDMS membrane based on solution-diffusion model considering concentration polarization

Qiu, Boya; Wang, Yuyang; Fan, Senqing; Liu, Jingyun; Jian, Shizhao; Qin, Yangmei; Xiao, Zeyi; Tang, Xiaoyu; Wang, Wenguo

doi:10.1016/j.seppur.2019.03.021

Cited by 40 publications

(16 citation statements)

References 35 publications

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“…During the initial onset of flow, absorption of ethanol into PDMS also contributes to total loss. However, the partition coefficient of ethanol in PDMS is on the order of 2.98 ( Qiu et al, 2019 ) which is reasonably low. We expect an effective system equilibrium to be achieved after less than 20h during the 48h study.…”

Section: Methodsmentioning

confidence: 95%

Modeling alcohol-associated liver disease in a human Liver-Chip

et al. 2021

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Section: Methodsmentioning

confidence: 95%

Modeling alcohol-associated liver disease in a human Liver-Chip

et al. 2021

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“…Apart from membrane resistance, boundary layer resistance may also act on the feed section of the membrane 52 . However, boundary layer resistance mainly depends on the feed section flow rate and the geometry of feed channel spacers, 35 which are out of the scope of this study.…”

Section: Theorymentioning

confidence: 99%

Removal of sulfur‐containing compounds from Fluid Catalytic Cracking unit (FCC) gasoline by pervaporation process: Effects of variations in feed characteristics and mass transfer properties of the membrane

Mishra

Jain

2021

Asia-Pacific J Chem Eng

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Analyzing the effects of feed characteristics and membrane transport properties are important for designing the industrial‐scale pervaporative desulfurization plants. In this study, a new method to analyze the effects of feed composition and membrane characteristics has been proposed, where these properties are represented by average vapor pressure and average permeance coefficient. Spiral wound module geometry is used in this study for more realistic industrial‐scale predictions. Results suggested that module performance in terms of stage cut and enrichment factor improved with increasing selectivity of the membrane. However, this effect was profound at lower selectivity (<5) and became negligible at higher selectivity (>10). Moreover, results also depicted that the increase in feed temperature increased enrichment factor when selectivity was low (<2.5), but this trend was reversed when selectivity was greater than 2.5. At a constant membrane selectivity, an increase in permeability reduced the enrichment factor. Thus, membrane selectivity should improve along with membrane permeability for better results. The pervaporation process was found more beneficial for removing highly volatile low molecular weight sulfur‐containing compounds. Finally, feed channel temperature drop and permeate channel pressure drop followed the trend of stage cut in all simulations. Therefore, the lower stage cut may improve module efficiency.

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“…In addition, the decrease of concentration polarization reduces the transport resistance in the liquid boundary layer, which leads to the increase of water flux [ 39 ]. Qiu et al [ 76 ] developed a mass transfer model based on the solution-diffusion theory with the consideration of concentration polarization to describe ethanol recovery by PV with PDMS membrane, as shown in Figure 11 . Where C b and C bm are ethanol concentration in liquid bulk and the liquid boundary layer at the interface of liquid boundary layer/membrane, respectively.…”

Section: Mechanism Operation Mode and Numerical Simulation Of Thementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Fabrication, Properties, Performances, and Separation Application of Polymeric Pervaporation Membranes: A Review

Wang

et al. 2020

Polymers

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Membrane separation technologies have attracted great attentions in chemical engineering, food science, analytical science, and environmental science. Compared to traditional membrane separation techniques like reverse osmosis (RO), ultrafiltration (UF), electrodialysis (ED) and others, pervaporation (PV)-based membrane separation shows not only mutual advantages such as small floor area, simplicity, and flexibility, but also unique characteristics including low cost as well as high energy and separation efficiency. Recently, different polymer, ceramic and composite membranes have shown promising separation applications through the PV-based techniques. To show the importance of PV for membrane separation applications, we present recent advances in the fabrication, properties and performances of polymeric membranes for PV separation of various chemicals in petrochemical, desalination, medicine, food, environmental protection, and other industrial fields. To promote the easy understanding of readers, the preparation methods and the PV separation mechanisms of various polymer membranes are introduced and discussed in detail. This work will be helpful for developing novel functional polymer-based membranes and facile techniques to promote the applications of PV techniques in different fields.

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Ethanol mass transfer during pervaporation with PDMS membrane based on solution-diffusion model considering concentration polarization

Cited by 40 publications

References 35 publications

Modeling alcohol-associated liver disease in a human Liver-Chip

Modeling alcohol-associated liver disease in a human Liver-Chip

Removal of sulfur‐containing compounds from Fluid Catalytic Cracking unit (FCC) gasoline by pervaporation process: Effects of variations in feed characteristics and mass transfer properties of the membrane

Fabrication, Properties, Performances, and Separation Application of Polymeric Pervaporation Membranes: A Review

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