Preparation and characterization of ZSM-5/PDMS hybrid pervaporation membranes: Laboratory results and pilot-scale performance

Liu, Jie; Chen, Jinxun; Zhan, Xia; Fang, Michael; Wang, Tao; Li, Jiding

doi:10.1016/j.seppur.2015.06.036

Cited by 29 publications

(11 citation statements)

References 54 publications

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“…The improvement of hydrophobic membrane performance is the focus to reduce energy consumption. High-silica ZSM-5 zeolites incorporated into a PDMS membrane was proven to be effective for separating alcohol-water mixtures [44]. Assuming that the separation factor could be increased to 5.2 with remaining permeate flux, about 15% of the electrical energy can be saved.…”

Section: Sensitivity Analysismentioning

confidence: 99%

Feasibility Study on Bioethanol Production by One Phase Transition Separation Based on Advanced Solid-State Fermentation

Liu

2021

Energies

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To fulfill the consumption demand of low-cost fuel ethanol, an advanced process for feedstock fermentation and bioethanol extraction was required. This study proposed a process of combined continuous solid-state distillation and vapor permeation to extract ethanol from fermented sweet sorghum bagasse on the basis of advanced solid-state fermentation technology. Ethanol undergoes only one phase transition separation in the whole process, which drastically reduces energy consumption compared to the repeating phase transitions that occur in conventional bioethanol production. The mass balance and energy consumption of combining processes were simulated overall. A techno-economic evaluation was conducted on the flowsheet. Costs and profit of fuel ethanol produced by one phase transition separation bioethanol-producing technology were comprehensively calculated. The results of the present study show that the proposed process is an energy efficient and cost-effective alternative to conventional bioethanol production.

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Section: Sensitivity Analysismentioning

confidence: 99%

Feasibility Study on Bioethanol Production by One Phase Transition Separation Based on Advanced Solid-State Fermentation

Liu

2021

Energies

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“…Many energy-efficient separation technologies suitable for recovering butanol from dilute solutions have been developed and applied to ABE fermentation, including gas stripping, adsorption, pervaporation, and extraction. − Among the novel butanol recovery techniques, pervaporation is superior for its high selectivity and low energy consumption. , Pervaporation is a membrane-based technique, wherein the preparation of various types of selective membranes and their performance for butanol separation from aqueous solutions have been extensively studied. ,− In general, polydimethyl siloxane (PDMS) membranes are easy to fabricate, have good performance, and are the most widely studied pervaporation membranes for butanol separation. ,− In addition, various hydrophobic materials, including carbon nanotubes (CNTs), − silica nanoparticles, silicalites, , and zeolitic imidazolate, , were incorporated to make PDMS mixed matrix membranes (MMMs) with improved butanol flux and selectivity or separation factor. Among them, zeolites have been widely used as inorganic fillers to enhance the flux and the separation factor because of their excellent hydrophobicity. , Zeolites are also cost-effective compared to most other inorganic fillers. For example, commercial ZSM-5 zeolites are available at lower than $20/kg, whereas economic analysis showed that baseline cost for the synthesis of several metal–organic frameworks (MOFs) via organic solvent synthesis ranged from $35 to $71/kg .…”

Section: Introductionmentioning

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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“…In the case of separating ethanol–water solutions (such as a fermentation broth), ethanol-selective membranes that can extract ethanol out of the dilute solutions would be preferred and more efficient. Most of the hydrophobic membranes in the literature for ethanol pervaporation have so far considered materials such as zeolites/silicalite and their supported thin layers [27,28,29,30,31], polymers such as polydimethylsiloxane (PDMS) [32], polymer-zeolite hybrids [33,34,35], and polymer-inorganic mixed matrices [36,37,38,39]. Recently, some works have considered superhydrophobicity for membrane separations of ethanol–water mixtures [40,41].…”

Section: Introductionmentioning

confidence: 99%

Surface-Engineered Inorganic Nanoporous Membranes for Vapor and Pervaporative Separations of Water–Ethanol Mixtures

Engtrakul

Bischoff

et al. 2018

Membranes

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Surface wettability-tailored porous ceramic/metallic membranes (in the tubular and planar disc form) were prepared and studied for both vapor-phase separation and liquid pervaporative separations of water-ethanol mixtures. Superhydrophobic nanoceramic membranes demonstrated more selective permeation of ethanol (relative to water) by cross-flow pervaporation of liquid ethanol–water mixture (10 wt % ethanol feed at 80 °C). In addition, both superhydrophilic and superhydrophobic membranes were tested for the vapor-phase separations of water–ethanol mixtures. Porous inorganic membranes having relatively large nanopores (up to 8-nm) demonstrated good separation selectivity with higher permeation flux through a non-molecular-sieving mechanism. Due to surface-enhanced separation selectivity, larger nanopore-sized membranes (~5–100 nm) can be employed for both pervaporation and vapor phase separations to obtain higher selectivity (e.g., permselectivity for ethanol of 13.9 during pervaporation and a vapor phase separation factor of 1.6), with higher flux due to larger nanopores than the traditional size-exclusion membranes (e.g., inorganic zeolite-based membranes having sub-nanometer pores). The prepared superhydrophobic porous inorganic membranes in this work showed good thermal stability (i.e., the large contact angle remains the same after 300 °C for 4 h) and chemical stability to ethanol, while the silica-textured superhydrophilic surfaced membranes can tolerate even higher temperatures. These surface-engineered metallic/ceramic nanoporous membranes should have better high-temperature tolerance for hot vapor processing than those reported for polymeric membranes.

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Preparation and characterization of ZSM-5/PDMS hybrid pervaporation membranes: Laboratory results and pilot-scale performance

Cited by 29 publications

References 54 publications

Feasibility Study on Bioethanol Production by One Phase Transition Separation Based on Advanced Solid-State Fermentation

Feasibility Study on Bioethanol Production by One Phase Transition Separation Based on Advanced Solid-State Fermentation

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

Surface-Engineered Inorganic Nanoporous Membranes for Vapor and Pervaporative Separations of Water–Ethanol Mixtures

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