Separation of diluted butanol–water solutions via vapor phase by organophilic membranes based on high permeable polyacetylenes

Yakovlev, A. V.; Shalygin, M. G.; Матсон, С. М.; Khotimskiy, V. S.; Teplyakov, V. V.

doi:10.1016/j.memsci.2013.01.061

Cited by 58 publications

(25 citation statements)

References 17 publications

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“…The permeability of both 1-butanol and water dropped noticeably with increasing temperature and increased with increasing concentration of 1-butanol in the feed (Figure 10). Negative activation energies were observed for the permeability of water and 1-butanol in both hybrid and neat membranes (Supplementary materials, Figure S2, S3, and S4), which is consistent with the literature [36]. As we show below, the activation energy of 1-butanol diffusion was positive.…”

Section: Resultssupporting

confidence: 90%

Selective Separation of 1-Butanol from Aqueous Solution through Pervaporation Using PTSMP-Silica Nano Hybrid Membrane

et al. 2020

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In this work, a poly(1-trimethylsilyl-1-propyne) (PTMSP) mixed-matrix membrane was fabricated for the selective removal of 1-butanol from aqueous solutions through pervaporation. Silica nanoparticles (SNPs), which were surface-modified with surfactant hexadecyltrimethylammonium bromide (CTAB), were incorporated into the structure of the membrane. The modified membrane was characterized by thermogravimetry-differential scanning calorimetry (TG-DSC), contact angle measurements, and scanning electron microscope (SEM) analysis. It was found that the surface hydrophobicity of the membrane was improved when compared to neat PTMSP by contact angle measurement. It was confirmed by SEM analysis that a uniform distribution of surface-modified SNPs throughout the PTMSP membrane was achieved. The thermogravimetric analysis detected the thermal degradation of the modified PTMSP at 370 °C, which is comparable to neat PTMSP. The pervaporation measurements showed a maximum separation factor of 126 at 63 °C for 1.5 w/w% 1-butanol in the feed. The maximum total flux of approximately 1.74 mg·cm−2·min−1 was observed with the highest inspected temperature of 63 °C and at the 1-butanol concentration in the feed 4.5 w/w%. The pervaporation transients showed that the addition of the surface-modified SNPs significantly enhanced the diffusivity of 1-butanol in the composite compared to the neat PTMSP membrane. This improvement was attributed to the influence of the well-dispersed SNPs in the PTMSP matrix, which introduced an additional path for diffusivity.

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Section: Resultssupporting

confidence: 90%

Selective Separation of 1-Butanol from Aqueous Solution through Pervaporation Using PTSMP-Silica Nano Hybrid Membrane

et al. 2020

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“…In current years, concerns on the climate change and the shortage of fossil energy, butanol (n-butanol) from ABE fermentation process was paid great attention again and it has been treated not only a superior biofuel candidate but also an important chemical feedstock [4][5][6]. Unfortunately, even though efforts have been taken to improve the ABE fermentation process, butanol from ABE fermentation was still not economically competitive when compared to the petro-chemical butanol production [7,8] The major drawbacks of the ABE fermentation process are obvious.…”

Section: Introductionmentioning

confidence: 99%

Acetone–butanol–ethanol (ABE) fermentation integrated with simplified gas stripping using sweet sorghum bagasse as immobilized carrier

Cai

Chang

Gao

et al. 2015

Chemical Engineering Journal

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“…The maximum of the separation factor is determined as a product of two quantities, namely, the separation factor of the phase transition and permselectivity of the membrane [27,41]. The first quantity is determined by the liquid-vapor thermodynamic equilibrium and is proportionate to the ratio of the moving forces of the two components penetrating through the membrane, and the second quantity is determined by the transport characteristics of the membrane.…”

Section: Ptmsp Membranes Reinforced With a Metal Wire Meshmentioning

confidence: 99%

High-Performance Reinforced PTMSP Membranes for Thermopervaporation Removal of Alcohols from Aqueous Media

Golubev

Borisov

Волков

et al. 2020

Membr. Membr. Technol.

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PTMSP membranes reinforced with a metal wire mesh have been fabricated and experimentally studied to increase the permeability and mechanical properties of poly(1-trimethylsilyl-1-propyne) (PTMSP) membranes in the course of thermopervaporation (TPV) removal of butanol from fermentation broths. The effect of the material wire of the mesh (stainless steel and bronze) and mesh size (30-40 μm) on the flux and separation factor in the course of thermopervaporation separation of aqueous solutions of butanol has been experimentally studied. It is shown in this work that the use of a metal wire mesh as a support instead of traditional commercial porous supports does not reduce the separation properties of a PTMSP membrane in the course of TPV removal of butanol from model fermentation mixtures. Separation modes that make it possible to obtain permeate fluxes above 1 kg m −2 h −1 have been found. It is shown in this work that the permeability coefficient of water through PTMSP membranes is 2.5 × 10 −5 mol m −2 h −1 kPa −1 and does not depend on the temperature of the feed and thickness of the membranes.

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Separation of diluted butanol–water solutions via vapor phase by organophilic membranes based on high permeable polyacetylenes

Cited by 58 publications

References 17 publications

Selective Separation of 1-Butanol from Aqueous Solution through Pervaporation Using PTSMP-Silica Nano Hybrid Membrane

Selective Separation of 1-Butanol from Aqueous Solution through Pervaporation Using PTSMP-Silica Nano Hybrid Membrane

Acetone–butanol–ethanol (ABE) fermentation integrated with simplified gas stripping using sweet sorghum bagasse as immobilized carrier

High-Performance Reinforced PTMSP Membranes for Thermopervaporation Removal of Alcohols from Aqueous Media

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