Extractive fermentation of ethanol using membrane distillation

Udriot, H.; Ampuero, S.; Marison, I. W.; Stockar, Urs von

doi:10.1007/bf01026651

Cited by 50 publications

(12 citation statements)

References 9 publications

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“…Further complicating this matter, in order to Another membrane process, membrane distillation, is oft en mentioned alongside pervaporation for the recovery of orga nic compounds, such as alcohols from water. 3,122,135,189,[202][203][204][205][206][207][208][209][210] In membrane distillation, however, a porous membrane rather than a nonporous membrane separates the feed liquid from the gas or vacuum purge applied on the permeate side of the membrane. In the case of a vacuum purge, the process is commonly referred to as vacuum membrane distillation.…”

Section: Adsorptionmentioning

confidence: 99%

Separation technologies for the recovery and dehydration of alcohols from fermentation broths

Vane

2008

Biofuels Bioprod Bioref

499

352

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Multi-column distillation followed by molecular sieve adsorption is currently the standard method for producing fuel-grade ethanol from dilute fermentation broths in modern corn-to-ethanol facilities. As the liquid biofuels industry transitions to lignocellulosic feedstocks, expands the end-product portfolio to include other alcohols, and encounters more dilute alcohol concentrations, alternative separation technologies which are more energy effi cient than the conventional approach will be in demand. In this review, alcohol recovery technology options and alcohol dehydration technology options for the production of ethanol and 1-butanol are reviewed and compared, with an emphasis on the energy footprint of each approach. Select hybrid technologies are also described.

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Section: Adsorptionmentioning

confidence: 99%

Separation technologies for the recovery and dehydration of alcohols from fermentation broths

Vane

2008

Biofuels Bioprod Bioref

499

352

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“…Tests of MD for the following applications ' have been reported in the literature: production of pure water from brack-, ish water or seawater (4,5); concentration of mandarin orange juice (6), grape juice (7), milk, sugar, and gelatin solutions (8); blood concentration (9); and extraction of dilute ethanol from aqueous solutions (10) or from fermentation broths (11). The main advantages of membrane distillation over conventional distillation processes are: lower operating temperatures, compact modules, mist elimination, and the possibility of overcoming corrosion problems by using plastic equipment.…”

Section: Banat and Simandl 'mentioning

confidence: 99%

Desalination by Membrane Distillation: A Parametric Study

Banat¹,

Simandl²

1998

Separation Science and Technology

181

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Membrane distillation was investigated as a possible technique for desalination. An air-gap module with built-in Condensing surface was used for conducting experiments on polyvinylidene fluoride flat membrane sheets. The feed stream tested was artificial seawater. The quality of the permeate, quantified by conductivity measurements, and the permeate flux were monitored as the feed temperature, feed flow rate, cooling temperature, and cooling water flow fate were varied. The effect of the distance between the membrane and condensing surface was investigated by adjusting the air gap within the module. A mathematical model incorporating temperature and concentration polarization effects was developed and validated on the experimental data. Good agreement between experimental and predicted values was obtained.

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“…Since fermentation broths from lignocellulose contain very low ethanol concentrations (about 2% w=w) (12), the generally applied distillation is not cost effective in this case and other separation technologies, such as gas stripping (13)(14)(15), liquid-liquid extraction (16)(17)(18), membrane distillation (19,20), adsorption (21)(22)(23), and pervaporation (24)(25)(26) are tested. The published report of Vane (27) gives a comprehensive view over these alternatives for bioalcohol production.…”

Section: Introductionmentioning

confidence: 99%

POMS Membrane for Selective Separation of Ethanol from Dilute Alcohol-Aqueous Solutions by Pervaporation

Lazarova

Bösch

Friedl

2012

Separation Science and Technology

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Lignocellulosic biomass has potential as an alternative to corn as starting material for the production of ethanol for the development of non-fossil fuel energy sources. In this case, low concentration bioethanol is gained by yeast fermentation and it has to be efficiently recovered and concentrated. For this purpose pervaporation separation of dilute alcohol-aqueous solutions was carried out using a poly(octhylmethyl siloxane) [POMS] membrane. The effect of different process parameters (feed composition, feed temperature, feed flow rate, permeate pressure) on pervaporation performance were investigated and discussed in terms of the separation factor and the total flux. The membrane studied was ethanol to water selective at ethanol feed concentrations lower than 2.5% w/w, while the highest permeability was achieved at feed temperature of 95 C.

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Extractive fermentation of ethanol using membrane distillation

Cited by 50 publications

References 9 publications

Separation technologies for the recovery and dehydration of alcohols from fermentation broths

Separation technologies for the recovery and dehydration of alcohols from fermentation broths

Desalination by Membrane Distillation: A Parametric Study

POMS Membrane for Selective Separation of Ethanol from Dilute Alcohol-Aqueous Solutions by Pervaporation

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