Polydimethylsiloxane based membranes for biofuels pervaporation

Si, Zhihao; Wu, Hanzhu; Qin, Peiyong; Bruggen, Bart Van der

doi:10.1016/j.seppur.2022.121612

Cited by 30 publications

(14 citation statements)

References 232 publications

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“…Compared with other reported polymeric membranes (Table S8 †), these results suggest great competitiveness and can meet the requirements of practical application. 10,21,[76][77][78][79] Except for ethanol recovery, the 5 wt% 1173IPS-MAPDMS membrane displays a versatile separation ability for gas separation (CO 2 , H 2 , CH 4 , and N 2 ) (Fig. S26 †).…”

Section: Separation Performance Of 1173ips-mapdms Membranesmentioning

confidence: 99%

“…9 To meet the requirement of ethanol separation from biomass, the organophilic membrane is integrated with a fermentation unit to extract the ethanol. As a benchmark of the alcohol-selective membranes, 10 polydimethylsiloxane (PDMS) is a low-cost raw material with superior processability. 11 Up to now, tremendous efforts have been made to focus on its downstream application unit, i.e., the improvement of PV performance.…”

Section: Introductionmentioning

confidence: 99%

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Polymeric membranes through self-initiation and self-polymerization for high-performance bioethanol pervaporation

Liu

Xue

et al. 2022

J. Mater. Chem. A

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Section: Separation Performance Of 1173ips-mapdms Membranesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polymeric membranes through self-initiation and self-polymerization for high-performance bioethanol pervaporation

Liu

Xue

et al. 2022

J. Mater. Chem. A

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“…8 Furthermore, the high-molecular-weight polymer easily results in a high viscidity interaction with the substrate. 2 It will form a thicker selective layer and cause a higher resistance to the penetration of molecules for transfer. For example, Jin et al 9 observed that the PDMS with a larger molecular weight exhibits a lower total flux, which explains the increased membrane thickness.…”

Section: Introductionmentioning

confidence: 99%

“…In general, the smaller the value of the interaction parameter is, the stronger the affinity is. Compared with that of water (47.9 MPa 0.5 ), ethanol has a Hildebrand solubility parameter of 26.2 MPa 0.5 similar to that of PDMS of 14.9 MPa 0.5 . Therefore, PDMS is easier to dissolve ethanol than water and obtains a high ethanol selectivity.…”

Section: Introductionmentioning

confidence: 99%

High-/Low-Molecular-Weight PDMS Photo-Copolymerized Membranes for Ethanol Recovery

Liu

et al. 2023

Ind. Eng. Chem. Res.

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Poly(dimethylsiloxane) (PDMS) is the benchmark of alcohol-selective membranes. The low-molecular-weight PDMS easily causes pore penetration and nonuniform coverage, thus PDMS membrane is generally fabricated by the high-molecular-weight chains (M w ≥ 50,000). However, there are inevitably excessive chain entanglements in longer polymeric chains, limiting the transport of penetrating molecules. In this work, we proposed a high-/low-molecular-weight PDMS photo-copolymerized strategy to prepare a high-performance pervaporation membrane for ethanol recovery, which combines the advantages of high-/low-molecularweight PDMS chains. The fluidity and polymerization efficiency are improved, while the excessive pore penetration is prevented. The result showed that the high-/low-molecular-weight PDMS mixed membranes display a superior comprehensive pervaporation performance for ethanol recovery in comparison with the other polymeric membranes. The copolymerized strategy is facile and shows a promising prospect for ethanol recovery.

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“…For the case that interests us, which involves the selective removal of organic compounds from an aqueous solution, hydrophobic pervaporation membranes are used. Various polymeric materials for membranes have been tested for the separation of alcohols in the studies reported in the literature, among which poly(dimethylsiloxane) (PDMS) is the most used and, to a lesser extent, there are poly(ether-block-amide) (PEBA), poly(octylmethylsiloxane) (POMS), poly[1-(trimethylsilyl)-1-propyne] (PTMSP), polyurethane, and poly(vinylidene fluoride) (PVDF) [ 19 , 20 , 21 ]. 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 ].…”

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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Polydimethylsiloxane based membranes for biofuels pervaporation

Cited by 30 publications

References 232 publications

Polymeric membranes through self-initiation and self-polymerization for high-performance bioethanol pervaporation

Polymeric membranes through self-initiation and self-polymerization for high-performance bioethanol pervaporation

High-/Low-Molecular-Weight PDMS Photo-Copolymerized Membranes for Ethanol Recovery

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

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