Use of the composite membrane of poly(ether-block-amide) and carbon nanotubes (CNTs) in a pervaporation system incorporated with fermentation for butanol production by Clostridium acetobutylicum

Yen, Hong‐Wei; Chen, Zhiheng; Yang, I‐Kuan

doi:10.1016/j.biortech.2012.01.017

Cited by 67 publications

(27 citation statements)

References 24 publications

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“…MMM such as poly(ether-block-amide) (PEBA) filled with ZIF-71, a subclass of metal-organic framework (MOFs) with superhydrophobic properties, gave a high total flux of 520 g/m 2 ·h and butanol separation factor of 18.8 using ABE solution as feed at 37°C23. With the addition of 5% CNTs in PEBA, the hybrid membrane increased the total flux and butanol separation factor from 85 g/m 2 ·h and 17.4 to 153 g/m 2 ·h and 19.4, respectively, compared to the control without CNTs addition24.…”

Section: Discussionmentioning

confidence: 99%

A carbon nanotube filled polydimethylsiloxane hybrid membrane for enhanced butanol recovery

Xue

Chen

et al. 2014

Sci Rep

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The carbon nanotubes (CNTs) filled polydimethylsiloxane (PDMS) hybrid membrane was fabricated to evaluate its potential for butanol recovery from acetone-butanol-ethanol (ABE) fermentation broth. Compared with the homogeneous PDMS membrane, the CNTs filled into the PDMS membrane were beneficial for the improvement of butanol recovery in butanol flux and separation factor. The CNTs acting as sorption-active sites with super hydrophobicity could give an alternative route for mass transport through the inner tubes or along the smooth surface. The maximum total flux and butanol separation factor reached up to 244.3 g/m2·h and 32.9, respectively, when the PDMS membrane filled with 10 wt% CNTs was used to separate butanol from the butanol/water solution at 80°C. In addition, the butanol flux and separation factor increased dramatically as temperature increased from 30°C to 80°C in feed solution since the higher temperature produced more free volumes in polymer chains to facilitate butanol permeation. A similar increase was also observed when butanol titer in solution increased from 10 g/L to 25 g/L. Overall, the CNTs/PDMS hybrid membrane with higher butanol flux and selectivity should have good potential for pervaporation separation of butanol from ABE fermentation broth.

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Section: Discussionmentioning

confidence: 99%

A carbon nanotube filled polydimethylsiloxane hybrid membrane for enhanced butanol recovery

Xue

Chen

et al. 2014

Sci Rep

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“…This is the primary factor impeding commercial acceptance of butanol production from renewable feedstock. Several separation techniques have thus been integrated with butanol fermentation processes for in situ solvent removal during batch and continuous butanol fermentation, and these include distillation, liquid–liquid extraction, adsorption by molecular sieves, and membrane separation [13–15]. To make butanol competitive with fossil fuels, the production costs must be reduced.…”

Section: Introductionmentioning

confidence: 99%

Bio-butanol production from glycerol with Clostridium pasteurianum CH4: the effects of butyrate addition and in situ butanol removal via membrane distillation

Lin

Yen

Kao

et al. 2015

Biotechnol Biofuels

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BackgroundClostridium pasteurianum CH4 was used to produce butanol from glycerol. The performance of butanol fermentation was improved by adding butyrate as the precursor to trigger the metabolic pathway toward butanol production, and by combining this with in situ butanol removal via vacuum membrane distillation (VMD) to avoid the product inhibition arising from a high butanol concentration.ResultsAdding 6 g L−1 butyrate as precursor led to an increase in the butanol yield from 0.24 to 0.34 mol butanol (mol glycerol)−1. Combining VMD and butyrate addition strategies could further enhance the maximum effective butanol concentration to 29.8 g L−1, while the yield was also improved to 0.39 mol butanol (mol glycerol)−1. The butanol concentration in the permeate of VMD was nearly five times higher than that in the feeding solution.ConclusionsThe proposed butyrate addition and VMD in situ butanol removal strategies are very effective in enhancing both butanol titer and butanol yield. This would significantly enhance the economic feasibility of fermentative production of butanol. The VMD-based technology not only alleviates the inhibitory effect of butanol, but also markedly increases butanol concentration in the permeate after condensation, thereby making downstream processing easier and more cost-effective.

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“…Inhibition from butanol in fermentation-PV coupled process was reported and ABE productivity was 0.38 g/(L h) due to the presence of 7 g/L butanol in fermenter [31]. Although improving membrane flux [34] or increasing the membrane area [26] could increase solvent productivity to the level of 0.58 and 0.50 g/(L h), it would increase the ABE production cost too. High glucose consumption rate of 2.63 g/(L h) was observed, suggesting that there was no serious inhibition on C. beijerinckii BT14.…”

Section: Membranementioning

confidence: 95%

“…Silicalite-1 filled polydimethylsiloxane (PDMS)/polyacrylonitrile (PAN) composite membrane has been applied in ABE fermentation and the solvent productivity reached 0.51 g/(L h) in batch ABE fermentation [16]. Solvent productivity increased to 0.58 g/(L h) when using a poly ether-block-amide (PEBA)/carbon nanotubes (CNTs) membrane with high butanol flux [34]. However, the butanol removal efficiency of these membranes was still less than butanol production rate, which led to accumulation of butanol in fermentation broth and consequently cause inhibition.…”

Section: Introductionmentioning

confidence: 98%

Efficient acetone–butanol–ethanol (ABE) production by a butanol-tolerant mutant of Clostridium beijerinckii in a fermentation–pervaporation coupled process

Kong

Zhao

et al. 2016

Biochemical Engineering Journal

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Use of the composite membrane of poly(ether-block-amide) and carbon nanotubes (CNTs) in a pervaporation system incorporated with fermentation for butanol production by Clostridium acetobutylicum

Cited by 67 publications

References 24 publications

A carbon nanotube filled polydimethylsiloxane hybrid membrane for enhanced butanol recovery

A carbon nanotube filled polydimethylsiloxane hybrid membrane for enhanced butanol recovery

Bio-butanol production from glycerol with Clostridium pasteurianum CH4: the effects of butyrate addition and in situ butanol removal via membrane distillation

Efficient acetone–butanol–ethanol (ABE) production by a butanol-tolerant mutant of Clostridium beijerinckii in a fermentation–pervaporation coupled process

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