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

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

doi:10.3390/membranes12101007

Cited by 9 publications

(3 citation statements)

References 55 publications

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“…However, this fermentation suffers from product inhibition. Thus, simultaneous removal of products during the fermentation stage may become an option for increasing reactor productivity, as already proposed for ABE fermentation [251][252][253]. Technical feasibility evaluated by Michailos et al [254] clearly summarized the disadvantages of this technology, indicating that conventional ethanol biorefineries have a better in terms of sustainability.…”

Section: Saccharomyces Cerevisiaementioning

confidence: 98%

Syngas Fermentation: Cleaning of Syngas as a Critical Stage in Fermentation Performance

Ellacuriaga,

Gil,

Gómez

2023

Fermentation

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The fermentation of syngas is an attractive technology that can be integrated with gasification of lignocellulosic biomass. The coupling of these two technologies allows for treating a great variety of raw materials. Lignin usually hinders microbial fermentations; thus, the thermal decomposition of the whole material into small molecules allows for the production of fuels and other types of molecules using syngas as substrate, a process performed at mild conditions. Syngas contains mainly hydrogen, carbon monoxide, and carbon dioxide in varying proportions. These gases have a low volumetric energy density, resulting in a more interesting conversion into higher energy density molecules. Syngas can be transformed by microorganisms, thus avoiding the use of expensive catalysts, which may be subject to poisoning. However, the fermentation is not free of suffering from inhibitory problems. The presence of trace components in syngas may cause a decrease in fermentation yields or cause a complete cessation of bacteria growth. The presence of tar and hydrogen cyanide are just examples of this fermentation’s challenges. Syngas cleaning impairs significant restrictions in technology deployment. The technology may seem promising, but it is still far from large-scale application due to several aspects that still need to find a practical solution.

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Section: Saccharomyces Cerevisiaementioning

confidence: 98%

Syngas Fermentation: Cleaning of Syngas as a Critical Stage in Fermentation Performance

Ellacuriaga,

Gil,

Gómez

2023

Fermentation

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“…This can act alone or can be coated with a layer of another material that provides protection but can also improve the performance of the whole membrane. These are called dual-layer membranes and have been widely studied in recent years [ 24 , 25 , 26 ]. Chong et al [ 27 ] used two different coating materials, polydimethylsiloxane (PDMS) and poly(ether block amide) (PEBA), to improve the separation properties of polysulfone hollow fiber membranes.…”

Section: Introductionmentioning

confidence: 99%

Thin-Film Composite Matrimid-Based Hollow Fiber Membranes for Oxygen/Nitrogen Separation by Gas Permeation

et al. 2023

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In recent years, the need to reduce energy consumption worldwide to move towards sustainable development has led many of the conventional technologies used in the industry to evolve or to be replaced by new alternatives. Oxygen is a compound with diverse industrial and medical applications. For this reason, obtaining it from air is one of the most interesting separations, traditionally performed by cryogenic distillation and pressure swing adsorption, two techniques which are very energetically expensive. In this sense, the implementation of membranes in a hollow fiber configuration is presented as a much more efficient alternative to carry out this separation. The aim of this work is to develop cost-effective multilayer hollow fiber composite membranes made of Matrimid and polydimethylsiloxane (PDMS) for the separation of oxygen and nitrogen from air. PDMS is used as a cover layer but can also enhance the performance of the membrane. In order to compare these two materials, three different configurations are studied. First, integral asymmetric Matrimid hollow fiber membranes were produced using the spinning method. Secondly, by using dip-coating method, a PDMS dense selective layer was deposited on a self-made polyvinylidene fluoride (PVDF) hollow fiber support. Finally, the performance of a dual-layer hollow fiber membrane of Matrimid and PDMS was studied. Membrane morphology was characterized by SEM and separation performance of the membranes was evaluated by mixed-gas permeation experiments. The novelty presented in this work is the manufacture of hollow fiber membranes and the way Matrimid is treated. This makes it possible to develop much thinner dense layers than in the case of flat-sheet membranes, which leads to higher permeance values. This is a key factor when implementing this technology on an industrial scale. Membranes prepared in this work were compared to the current state of the art, reporting quite good performance for the dual-layer membrane, reaching O2 permeance of 30.8 GPU and O2/N2 selectivity of 4.7, with a thickness of about 5–10 μm (counting both selective layers). In addition, the effect of operating temperature on the membrane permeances has been studied experimentally; we analyze its influence on the selectivity of the separation process.

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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 light, Arregoitia-Sarabia et al [ 6 ] also studied novel pervaporation hollow fibre membranes composed of a PEBA layer and an external PDMS layer for the separation of butanol in order to evaluate their performance in the selective removal of organics from a synthetic ABE solution. In their study, they developed hollow fibres composed of a PEBA layer and an external PDMS layer, allowing an excellent selectivity to butanol (due to PEBA) together with the protective role of the PDMS layer, which allows sealing small holes or gaps in the fibres.…”

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confidence: 99%

State of the Art Membrane Science and Technology in the Iberian Peninsula 2021–2022

et al. 2023

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

Cited by 9 publications

References 55 publications

Syngas Fermentation: Cleaning of Syngas as a Critical Stage in Fermentation Performance

Syngas Fermentation: Cleaning of Syngas as a Critical Stage in Fermentation Performance

Thin-Film Composite Matrimid-Based Hollow Fiber Membranes for Oxygen/Nitrogen Separation by Gas Permeation

State of the Art Membrane Science and Technology in the Iberian Peninsula 2021–2022

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