Hydrosilylation-based UV-curable polydimethylsiloxane pervaporation membranes for n-butanol recovery

Lee, Ju‐Yeon; Hwang, Seon Oh; Kim, Hyung Ju; Hong, Do Young; Lee, Jong Suk

doi:10.1016/j.seppur.2018.07.045

Cited by 19 publications

(8 citation statements)

References 48 publications

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“…In this study, the PDMS membranes were fabricated by casting and oven-drying for their simple and economical operation. However, various novel membrane fabrication technologies are also available for fast, reproducible, cost-effective, and ecofriendly membrane preparation. ,, For example, microwave and UV-induced curing would allow for simple, rapid, energy-efficient, and environmentally friendly membrane preparation processes compared to heat-curing. An UV-induced and solvent-free process has also been proposed with a short curing time (30 s) .…”

Section: Results and Discussionmentioning

confidence: 99%

High-Performance n-Butanol Recovery from Aqueous Solution by Pervaporation with a PDMS Mixed Matrix Membrane Filled with Zeolite

Cheng

Liu

Yang

et al. 2020

Ind. Eng. Chem. Res.

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Zeolite-filled polydimethylsiloxane (PDMS) mixed matrix membranes (MMMs) were developed for pervaporation separation of n-butanol from dilute butanol–water solution. The effects of zeolite, feed butanol concentration, and temperature were studied. In general, the butanol separation factor increased with increasing the temperature, whereas the fluxes increased with the reducing membrane thickness and increasing feed butanol concentration and temperature. At 47 °C, PDMS MMMs filled with 40 wt % zeolite gave the highest separation factor of 77, which would reduce the energy consumption for butanol recovery from 1.0 wt % butanol by ∼75% to ∼10 MJ/kg butanol using a hybrid pervaporation-distillation process compared to distillation. The zeolite-filled PDMS MMM with a thickness of 10 μm would have a high butanol flux of 1000 g/m2·h at 56 °C. With a high separation factor and butanol flux, the zeolite-filled PDMS MMM would be advantageous for recovering n-butanol from dilute solution at significantly reduced energy input and cost.

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Section: Results and Discussionmentioning

confidence: 99%

High-Performance n-Butanol Recovery from Aqueous Solution by Pervaporation with a PDMS Mixed Matrix Membrane Filled with Zeolite

Cheng

Liu

Yang

et al. 2020

Ind. Eng. Chem. Res.

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“…PDMS is the most widely used polymeric membrane material for solvent enrichment/recovery from dilute aqueous solution. Herein, the performance of recently reported polymer-based membranes for butanol/water separation are summarized in Figure b and Table S4. − In addition, the performance of several inorganic membranes also listed in Table S4. , Due to the ultrathin and sturdy PDMS layer from the MAS strategy in this work, the PDMS/CHNs/PAN composite membranes show an excellent flux, which is 2–20 times higher than that of reported PDMS membranes, and a comparable separation factor. On basis of the as-prepared high-flux PDMS UTFC membranes, other well-developed approaches such as incorporating porous nanofillers can be adopted to further optimize the membrane microstructure and improve the separation performance.…”

Section: Resultsmentioning

confidence: 85%

Ultrathin Membranes with a Polymer/Nanofiber Interpenetrated Structure for High-Efficiency Liquid Separations

Chen

Liu

et al. 2019

ACS Appl. Mater. Interfaces

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Ultrathin-film composite membranes comprising an ultrathin polymeric active layer have been extensively explored in gas separation applications benefiting from their extraordinary permeation flux for high-throughput separation. However, the practical realization of an ultrathin active layer in liquid separations is still impeded by the trade-off effect between the membrane thickness (permeation flux) and structural stability (separation factor). Herein, we report a general multiple and alternate spin-coating strategy, collaborating with the interface-decoration layer of copper hydroxide nanofibers (CHNs), to obtain ultrathin and robust polymer-based membranes for high-performance liquid separations. The structural stability arises from the poly(dimethylsiloxane) (PDMS)/CHN interpenetrated structure, which confers the synergistic effect between PDMS and CHNs to concurrently resist PDMS swelling and avoid CHNs from collapsing, while the ultrathin thickness is enabled by the sub-10 nm pore size of the CHN layer, the rapid cross-linking reaction during spin-coating, and the small thickness of the CHN layer. As a result, the as-prepared membrane possesses an exceptional butanol/water separation performance with a flux of 6.18 kg/(m 2 h) and a separation factor of 31, far exceeding the state-of-the-art polymer membranes. The strategy delineated in this work provides a straightforward method for the design of ultrathin and structurally stable polymer membranes, holding great potential for the practical application of high-efficiency separations.

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“…Hampered by the high cost of membranes and the lower permeate fluxes [221,253] cross-linked PDMS [205], PDMS-based pervaporation membranes [206], modified grapheme oxide with ionic liquid [207], and mixed matrix membranes [208]) were fabricated and applied to ISPR techniques, and displayed a more stable performance during long-time continuous operation of ABE fermentation [24]. More importantly, an ideal integrated recovery process should minimize energy consumption and concentrate butanol with high selectivity, so hybrid integrated recovery processes were also developed to compensate for the respective disadvantages of individual processes, and showed good potential for industrial ABE fermentation [191,209].…”

Section: In Situ Product Recovery (Ispr) Techniquesmentioning

confidence: 99%

Pathway dissection, regulation, engineering and application: lessons learned from biobutanol production by solventogenic clostridia

Huang

et al. 2020

Biotechnol Biofuels

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The global energy crisis and limited supply of petroleum fuels have rekindled the interest in utilizing a sustainable biomass to produce biofuel. Butanol, an advanced biofuel, is a superior renewable resource as it has a high energy content and is less hygroscopic than other candidates. At present, the biobutanol route, employing acetone-butanolethanol (ABE) fermentation in Clostridium species, is not economically competitive due to the high cost of feedstocks, low butanol titer, and product inhibition. Based on an analysis of the physiological characteristics of solventogenic clostridia, current advances that enhance ABE fermentation from strain improvement to product separation were systematically reviewed, focusing on: (1) elucidating the metabolic pathway and regulation mechanism of butanol synthesis; (2) enhancing cellular performance and robustness through metabolic engineering, and (3) optimizing the process of ABE fermentation. Finally, perspectives on engineering and exploiting clostridia as cell factories to efficiently produce various chemicals and materials are also discussed.

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Hydrosilylation-based UV-curable polydimethylsiloxane pervaporation membranes for n-butanol recovery

Cited by 19 publications

References 48 publications

High-Performance n-Butanol Recovery from Aqueous Solution by Pervaporation with a PDMS Mixed Matrix Membrane Filled with Zeolite

High-Performance n-Butanol Recovery from Aqueous Solution by Pervaporation with a PDMS Mixed Matrix Membrane Filled with Zeolite

Ultrathin Membranes with a Polymer/Nanofiber Interpenetrated Structure for High-Efficiency Liquid Separations

Pathway dissection, regulation, engineering and application: lessons learned from biobutanol production by solventogenic clostridia

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