Multiple effect concentration of ethanol by ohmic-assisted hydrodistillation.

Mohsen Gavahian, Asgar Farahnaky, Sudhir Sastry

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Our previous work on ethanol distillation by ohmic-assisted hydrodistillation (OAHD) successfully concentrated ethanol from 10 to 50% v/v. In this work, two additional concentration steps were conducted using the 50% v/v product obtained from the first concentration stage at a constant wattage of 168 W using the same OAHD device. The second distillation step resulted in a product with ethanol concentration of 76% v/v and the third step yielded ethanol concentration of 84% v/v. Results were compared to conventional hydrodistillation (HD), and were indicative that OAHD reduces one third of energy cost in ethanol distillation process. Not only was OAHD superior to HD in terms of time and energy consumption, but also resulted in higher ethanol concentrations than HD after the third step of distillation: 84.3% ± 0.3 vs. 82.5% ± 0.5, respectively. OAHD also showed better process control and was able to stop the distillation process faster than HD. In both second and third distillation steps, the time required to stop the process with OAHD (1 min) was shorter than for HD process (10 min). The findings of this study further confirm our previous work, and reveal that this emerging distillation technique has the potential of yielding high concentrations of ethanol from dilute alcoholic solutions in a more economical and environmental friendly way.
Original languageEnglish
Pages (from-to)85-91
Number of pages7
JournalFood and Bioproducts Processing
Volume100
Issue numberPart A
DOIs
Publication statusPublished - 2016

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Distillation
Ethanol
ethanol
distillation
hydrodistillation
Process control
Energy utilization
energy costs
process control
alcohol abuse
Costs and Cost Analysis
Equipment and Supplies
Costs

Cite this

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title = "Multiple effect concentration of ethanol by ohmic-assisted hydrodistillation.",
abstract = "Our previous work on ethanol distillation by ohmic-assisted hydrodistillation (OAHD) successfully concentrated ethanol from 10 to 50{\%} v/v. In this work, two additional concentration steps were conducted using the 50{\%} v/v product obtained from the first concentration stage at a constant wattage of 168 W using the same OAHD device. The second distillation step resulted in a product with ethanol concentration of 76{\%} v/v and the third step yielded ethanol concentration of 84{\%} v/v. Results were compared to conventional hydrodistillation (HD), and were indicative that OAHD reduces one third of energy cost in ethanol distillation process. Not only was OAHD superior to HD in terms of time and energy consumption, but also resulted in higher ethanol concentrations than HD after the third step of distillation: 84.3{\%} ± 0.3 vs. 82.5{\%} ± 0.5, respectively. OAHD also showed better process control and was able to stop the distillation process faster than HD. In both second and third distillation steps, the time required to stop the process with OAHD (1 min) was shorter than for HD process (10 min). The findings of this study further confirm our previous work, and reveal that this emerging distillation technique has the potential of yielding high concentrations of ethanol from dilute alcoholic solutions in a more economical and environmental friendly way.",
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Multiple effect concentration of ethanol by ohmic-assisted hydrodistillation. / Gavahian, Mohsen; Farahnaky, Asgar; Sastry, Sudhir.

In: Food and Bioproducts Processing, Vol. 100, No. Part A, 2016, p. 85-91.

Research output: Contribution to journalArticle

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T1 - Multiple effect concentration of ethanol by ohmic-assisted hydrodistillation.

AU - Gavahian, Mohsen

AU - Farahnaky, Asgar

AU - Sastry, Sudhir

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PY - 2016

Y1 - 2016

N2 - Our previous work on ethanol distillation by ohmic-assisted hydrodistillation (OAHD) successfully concentrated ethanol from 10 to 50% v/v. In this work, two additional concentration steps were conducted using the 50% v/v product obtained from the first concentration stage at a constant wattage of 168 W using the same OAHD device. The second distillation step resulted in a product with ethanol concentration of 76% v/v and the third step yielded ethanol concentration of 84% v/v. Results were compared to conventional hydrodistillation (HD), and were indicative that OAHD reduces one third of energy cost in ethanol distillation process. Not only was OAHD superior to HD in terms of time and energy consumption, but also resulted in higher ethanol concentrations than HD after the third step of distillation: 84.3% ± 0.3 vs. 82.5% ± 0.5, respectively. OAHD also showed better process control and was able to stop the distillation process faster than HD. In both second and third distillation steps, the time required to stop the process with OAHD (1 min) was shorter than for HD process (10 min). The findings of this study further confirm our previous work, and reveal that this emerging distillation technique has the potential of yielding high concentrations of ethanol from dilute alcoholic solutions in a more economical and environmental friendly way.

AB - Our previous work on ethanol distillation by ohmic-assisted hydrodistillation (OAHD) successfully concentrated ethanol from 10 to 50% v/v. In this work, two additional concentration steps were conducted using the 50% v/v product obtained from the first concentration stage at a constant wattage of 168 W using the same OAHD device. The second distillation step resulted in a product with ethanol concentration of 76% v/v and the third step yielded ethanol concentration of 84% v/v. Results were compared to conventional hydrodistillation (HD), and were indicative that OAHD reduces one third of energy cost in ethanol distillation process. Not only was OAHD superior to HD in terms of time and energy consumption, but also resulted in higher ethanol concentrations than HD after the third step of distillation: 84.3% ± 0.3 vs. 82.5% ± 0.5, respectively. OAHD also showed better process control and was able to stop the distillation process faster than HD. In both second and third distillation steps, the time required to stop the process with OAHD (1 min) was shorter than for HD process (10 min). The findings of this study further confirm our previous work, and reveal that this emerging distillation technique has the potential of yielding high concentrations of ethanol from dilute alcoholic solutions in a more economical and environmental friendly way.

KW - Distillation

KW - Energy saving

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KW - Ohmic-assisted hydrodistillation

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