Preparation and characterization of siloxane composite membranes for n-butanol concentration from ABE solution by pervaporation

Jee, Ki Yong; Lee, Yong Taek

doi:10.1016/j.memsci.2013.12.061

Cited by 42 publications

(19 citation statements)

References 39 publications

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“…PVDF is an ideal candidate for use as a polymeric support in TFC membranes, because of its excellent thermal and chemical stability. PVDF has been used as the support material for pervaporation membranes with active layers of PDMS [49,[51][52][53], PDMS/ZIF-7 [22], silica-filled PTMSP [54] and PEBA/Zn(BDC)(TED) 0.5 [23]. PVDF substrates have been utilised for TFC membranes not only in flat-sheet form, but also in hollow fibre form [55].…”

Section: Introductionmentioning

confidence: 99%

High-flux PIM-1/PVDF thin film composite membranes for 1-butanol/water pervaporation

Gao

Alberto

Gorgojo

et al. 2017

Journal of Membrane Science

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Membranes that enable the recovery of organic compounds from dilute aqueous solution are desired for applications such as biobutanol production. The polymer of intrinsic microporosity PIM-1 shows promise for organophilic separations and here it is incorporated into thin film composite (TFC) membranes in order to increase the flux of permeate. Asymmetric polyvinylidene fluoride (PVDF) supports were prepared with pore sizes at the surface in the size range 25-55 nm and fractional surface porosities in the range 0.38-0.69, as determined by atomic force microscopy (AFM). The addition of phosphoric acid to the PVDF dope solution helped to control the pore size and porosity. Supports were coated with PIM-1 to form TFC membranes with active layer thicknesses in the range 1.0-2.9 m. Membranes were tested for the pervaporation of a 1-butanol/water mixture (5 wt.%). At 65 C, values of total flux up to 9 kg m-2 h-1 were obtained, with separation factors up to 18.5 and values of pervaporation separation index (PSI) up to 112 kg m 2 h 1 .

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Section: Introductionmentioning

confidence: 99%

High-flux PIM-1/PVDF thin film composite membranes for 1-butanol/water pervaporation

Gao

Alberto

Gorgojo

et al. 2017

Journal of Membrane Science

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“…The 12 obtained crude ethanol, 8-10% (w/v) [1], is then purified by 13 distillation to produce approximately 95% (w/v) ethanol, which is a 14 nearly azeotropic mixture of ethanol and water [2][3][4]. Additional 15 separation of water from this binary mixture is required.…”

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confidence: 99%

“…Additional 15 separation of water from this binary mixture is required. 16 Separation techniques such as adsorption, pressure-swing distil-17 lation, extractive distillation, azeotropic distillation and novel 18 composites have been developed and proposed for separation and 19 purification applications [5][6][7][8][9][10][11][12][13]. However, some of these techni-20…”

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confidence: 99%

Development of bacterial cellulose/alginate nanocomposite membrane for separation of ethanol–water mixtures

Suratago

Taokaew

Kanjanamosit

et al. 2015

Journal of Industrial and Engineering Chemistry

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“…The butanol permeability of the reported PDMS-based membranes still showed important variations from 0.67 to 12.69 kg μm/h m 2 kPa. 24,27,29 The reported PDMS-based membranes also showed moderate to very high separation factors in the range of 22 to 58 for butanol recovery from dilute aqueous solutions containing 1 or 2 wt % of n-butanol. 22,26 The pervaporation data reported in Table 3 showed that the best grafted copolymer membrane obtained in this work (PUUg-PDMS-50, first entry) had better selectivity than the two leading commercial pervaporation membranes (PDMS/PAN PERVAP 1060 GFT and Pervatech) for butanol recovery from dilute aqueous solutions.…”

Section: Resultsmentioning

confidence: 88%

Multiblock Copolymer Grafting for Butanol Biofuel Recovery by a Sustainable Membrane Process

Kumar

Arnal-Hérault

Wang

et al. 2016

ACS Appl. Mater. Interfaces

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Biobutanol is an attractive renewable biofuel mainly obtained by the acetone-butanol-ethanol (ABE) fermentation process. Nevertheless, the alcohol concentration has to be limited to a maximum of 2 wt % in ABE fermentation broths to avoid butanol toxicity to the microorganisms. The pervaporation (PV) membrane process is a key sustainable technology for butanol recovery in these challenging conditions. In this work, the grafting of azido-polydimethylsiloxane (PDMS-N3) onto a PDMS-based multiblock copolymer containing alkyne side groups led to a series of original membrane materials with increasing PDMS contents from 50 to 71 wt %. Their membrane properties were assessed for butanol recovery by pervaporation from a model aqueous solution containing 2 wt % of n-butanol at 50 °C. The membrane flux J50μm for a reference thickness of 50 μm strongly increased from 84 to 192 g/h m(2) with increasing PDMS content for free-standing dense membranes with thicknesses in the range of 38-95 μm. At the same time, the intrinsic butanol permeability increased from 1.47 to 4.68 kg μm/h m(2) kPa and the permeate butanol content was also strongly improved from 38 to 53 wt %, corresponding to high and very high membrane separation factors of 30 and 55, respectively. Therefore, the new grafted copolymer materials strongly overcame the common permeability/selectivity trade-off for butanol recovery by a sustainable membrane process.

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Preparation and characterization of siloxane composite membranes for n-butanol concentration from ABE solution by pervaporation

Cited by 42 publications

References 39 publications

High-flux PIM-1/PVDF thin film composite membranes for 1-butanol/water pervaporation

High-flux PIM-1/PVDF thin film composite membranes for 1-butanol/water pervaporation

Development of bacterial cellulose/alginate nanocomposite membrane for separation of ethanol–water mixtures

Multiblock Copolymer Grafting for Butanol Biofuel Recovery by a Sustainable Membrane Process

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