Polymer inclusion membranes containing ionic liquids for the recovery of n-butanol from ABE solutions by pervaporation

Arregoitia-Sarabia, Carla; González-Revuelta, Daniel; Fallanza, Marcos; Gorri, Daniel; Ortiz, Inmaculada

doi:10.1016/j.seppur.2020.117101

Cited by 32 publications

(5 citation statements)

References 34 publications

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“…Mass-transfer resistance in the studied system was evaluated by the resistance in series theory assuming the solution-diffusion mechanism [25,26]. The theory predicts that the mass-transfer coefficient K overall,i for a component i can be described by the sum of the system components resistances, as follows:…”

Section: Mass Transfer Evaluation In Prepared Membranesmentioning

confidence: 99%

Merging Proline:Xylitol Eutectic Solvent in Crosslinked Chitosan Pervaporation Membranes for Enhanced Water Permeation in Dehydrating Ethanol

2023

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The scope of this research aims at merging a new deep eutectic mixture (DES) into a biopolymer-based membrane for a pervaporation application in dehydrating ethanol. Herein, an L-proline:xylitol (at 5:1) eutectic mixture was successfully synthesized and blended with chitosan (CS). A complete characterization of the hybrid membranes, in terms of morphology, solvent uptake, and hydrophilicity, has been conducted. As part of their applicability, the blended membranes were assayed for their ability to separate water from ethanolic solutions by means of pervaporation. At the highest temperature (50 °C), a water permeation of ca. 0.46 kg m−2 h−1 was acquired, representing a higher permeation than the pristine CS membranes (ca. 0.37 kg m−2 h−1). Therefore, CS membranes demonstrated an enhanced water permeation thanks to their blending with the hydrophilic L-proline:xylitol agent, making these membranes a good candidate for other separations containing polar solvents.

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Section: Mass Transfer Evaluation In Prepared Membranesmentioning

confidence: 99%

Merging Proline:Xylitol Eutectic Solvent in Crosslinked Chitosan Pervaporation Membranes for Enhanced Water Permeation in Dehydrating Ethanol

2023

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“…The series resistance model is generally used to study the mass transfer of the components in the boundary layer between the liquid feed and the composite membrane. The results show that the resistance of the boundary layer has little effect on transfer process and it can be weakened by increasing flow velocity [19][20][21][22]. The study of permeation activation energy shows that dissolution is the dominant step [23,24].…”

Section: Introductionmentioning

confidence: 95%

Transmission of butanol isomers in pervaporation based on series resistance model

Zuo

Hindley

Ding³

et al. 2021

Journal of Membrane Science

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“…In addition, in recent years, there has been an increasing interest in composite membranes formed with a polymer matrix with the addition of fillers such as zeolites [ 22 , 23 ], ZIF [ 24 ], MOF [ 25 ], and graphene oxide [ 26 ]. From all these polymer materials, PEBA has been especially selective towards butanol [ 27 ] due to its affinity for this compound that allows an appreciable solubility of butanol in the polymeric matrix, while the PEBA’s hydrophobic character limits the transport of water through the membrane.…”

Section: Introductionmentioning

confidence: 99%

PEBA/PDMS Composite Multilayer Hollow Fiber Membranes for the Selective Separation of Butanol by Pervaporation

et al. 2022

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The growing interest in the production of biofuels has motivated numerous studies on separation techniques that allow the separation/concentration of organics produced by fermentation, improving productivity and performance. In this work, the preparation and characterization of new butanol-selective membranes was reported. The prepared membranes had a hollow fiber configuration and consisted of two dense selective layers: a first layer of PEBA and a second (outer) layer of PDMS. The membranes were tested to evaluate their separation performance in the selective removal of organics from a synthetic ABE solution. Membranes with various thicknesses were prepared in order to evaluate the effect of the PDMS protective layer on permeant fluxes and membrane selectivity. The mass transport phenomena in the pervaporation process were characterized using a resistances-in-series model. The experimental results showed that PEBA as the material of the dense separating layer is the most favorable in terms of selectivity towards butanol with respect to the other components of the feed stream. The addition of a protective layer of PDMS allows the sealing of possible pinholes; however, its thickness should be kept as small as possible since permeation fluxes decrease with increasing thickness of PDMS and this material also has greater selectivity towards acetone compared to other feed components.

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Polymer inclusion membranes containing ionic liquids for the recovery of n-butanol from ABE solutions by pervaporation

Cited by 32 publications

References 34 publications

Merging Proline:Xylitol Eutectic Solvent in Crosslinked Chitosan Pervaporation Membranes for Enhanced Water Permeation in Dehydrating Ethanol

Merging Proline:Xylitol Eutectic Solvent in Crosslinked Chitosan Pervaporation Membranes for Enhanced Water Permeation in Dehydrating Ethanol

Transmission of butanol isomers in pervaporation based on series resistance model

PEBA/PDMS Composite Multilayer Hollow Fiber Membranes for the Selective Separation of Butanol by Pervaporation

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