Kinetic Modeling and Techno-economic Feasibility of Ethanol Production From Carob Extract Based Medium in Biofilm Reactor

In this study, different carob extract-based media containing Medium A (included all ingredients), Medium B (included yeast extract and salts), Medium C (included (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> and salts), Medium D (included only salts) and Medium E (i...

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Main Authors: Mustafa Germec, Irfan Turhan, Mustafa Karhan, Ali Demirci
Format: Article
Language:English
Published: MDPI AG 2019-05-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/9/10/2121
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spelling doaj-2eb1086cbe8c415294e208bbfe177f962020-11-25T00:09:04ZengMDPI AGApplied Sciences2076-34172019-05-01910212110.3390/app9102121app9102121Kinetic Modeling and Techno-economic Feasibility of Ethanol Production From Carob Extract Based Medium in Biofilm ReactorMustafa Germec0Irfan Turhan1Mustafa Karhan2Ali Demirci3Department of Food Engineering, Akdeniz University, Antalya 07058, TurkeyDepartment of Food Engineering, Akdeniz University, Antalya 07058, TurkeyDepartment of Food Engineering, Akdeniz University, Antalya 07058, TurkeyDepartment of Agricultural and Biological Engineering, The Pennsylvania State University, University Park, PA 16802, USAIn this study, different carob extract-based media containing Medium A (included all ingredients), Medium B (included yeast extract and salts), Medium C (included (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> and salts), Medium D (included only salts) and Medium E (included no ingredients) were evaluated for ethanol fermentation by <i>Saccharomyces cerevisiae</i> in a biofilm reactor and their results were used for kinetic modeling. The logistic model for cell growth, Luedeking-Piret model for ethanol production and Modified Luedeking-Piret model for substrate consumption were studied. Kinetic parameters were determined by fitting the observed values of the models. The findings indicated that the predicted data with the suggested kinetic model for each medium fitted very well the experimental data. Estimated kinetics were also in good agreement with experimental kinetics. The techno-economic analysis was performed with the unit costs of the components used in the medium and ethanol. Medium-based process economic feasibility proved carob extract-based Medium E and subsequently Medium D as most economical for ethanol production. The present study verified the potential of carob extract-based medium for increased economical production of ethanol. In conclusion, the ethanol production in a biofilm reactor is growth-associated since &#945; (g<i>P</i>/g<i>X</i>) was greater than &#946; (g<i>P</i>/g<i>X</i>.h) and Media D and E increased the economic production of carob extract-based ethanol.https://www.mdpi.com/2076-3417/9/10/2121carob extractmedia compositionsrepeated batchbiofilm reactormodelingtechno-economic analysis
collection DOAJ
language English
format Article
sources DOAJ
author Mustafa Germec
Irfan Turhan
Mustafa Karhan
Ali Demirci
spellingShingle Mustafa Germec
Irfan Turhan
Mustafa Karhan
Ali Demirci
Kinetic Modeling and Techno-economic Feasibility of Ethanol Production From Carob Extract Based Medium in Biofilm Reactor
Applied Sciences
carob extract
media compositions
repeated batch
biofilm reactor
modeling
techno-economic analysis
author_facet Mustafa Germec
Irfan Turhan
Mustafa Karhan
Ali Demirci
author_sort Mustafa Germec
title Kinetic Modeling and Techno-economic Feasibility of Ethanol Production From Carob Extract Based Medium in Biofilm Reactor
title_short Kinetic Modeling and Techno-economic Feasibility of Ethanol Production From Carob Extract Based Medium in Biofilm Reactor
title_full Kinetic Modeling and Techno-economic Feasibility of Ethanol Production From Carob Extract Based Medium in Biofilm Reactor
title_fullStr Kinetic Modeling and Techno-economic Feasibility of Ethanol Production From Carob Extract Based Medium in Biofilm Reactor
title_full_unstemmed Kinetic Modeling and Techno-economic Feasibility of Ethanol Production From Carob Extract Based Medium in Biofilm Reactor
title_sort kinetic modeling and techno-economic feasibility of ethanol production from carob extract based medium in biofilm reactor
publisher MDPI AG
series Applied Sciences
issn 2076-3417
publishDate 2019-05-01
description In this study, different carob extract-based media containing Medium A (included all ingredients), Medium B (included yeast extract and salts), Medium C (included (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> and salts), Medium D (included only salts) and Medium E (included no ingredients) were evaluated for ethanol fermentation by <i>Saccharomyces cerevisiae</i> in a biofilm reactor and their results were used for kinetic modeling. The logistic model for cell growth, Luedeking-Piret model for ethanol production and Modified Luedeking-Piret model for substrate consumption were studied. Kinetic parameters were determined by fitting the observed values of the models. The findings indicated that the predicted data with the suggested kinetic model for each medium fitted very well the experimental data. Estimated kinetics were also in good agreement with experimental kinetics. The techno-economic analysis was performed with the unit costs of the components used in the medium and ethanol. Medium-based process economic feasibility proved carob extract-based Medium E and subsequently Medium D as most economical for ethanol production. The present study verified the potential of carob extract-based medium for increased economical production of ethanol. In conclusion, the ethanol production in a biofilm reactor is growth-associated since &#945; (g<i>P</i>/g<i>X</i>) was greater than &#946; (g<i>P</i>/g<i>X</i>.h) and Media D and E increased the economic production of carob extract-based ethanol.
topic carob extract
media compositions
repeated batch
biofilm reactor
modeling
techno-economic analysis
url https://www.mdpi.com/2076-3417/9/10/2121
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AT irfanturhan kineticmodelingandtechnoeconomicfeasibilityofethanolproductionfromcarobextractbasedmediuminbiofilmreactor
AT mustafakarhan kineticmodelingandtechnoeconomicfeasibilityofethanolproductionfromcarobextractbasedmediuminbiofilmreactor
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