Application of mathematical models to ethanol fermentation in biofilm reactor with carob extract

Mustafa Germec, Kuan Chen Cheng, Mustafa Karhan, Ali Demirci, Irfan Turhan

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Mathematical models not only ensure information about kinetic-metabolic nature of fermentations, but also facilitate their control and optimization. In the study, flexible ten models were evaluated and employed to describe the ethanol fermentation in a biofilm reactor with a carob extract medium (CEM). Findings indicated that W model well fitted the experimental data of cell growth (root mean square error (RMSE) = 0.289 g/L, mean absolute error (MAE) = 0.237 g/L, regression coefficient (R 2 ) = 0.9944, bias factor (BF) = 1.021, and accuracy factor (AF) = 1.047), ethanol production (RMSE = 1.609 g/L, MAE = 1.277 g/L, R 2  = 0.9774, BF = 1.178, and AF = 1.283), and substrate consumption (RMSE = 2.493 g/L, MAE = 1.546 g/L, R 2  = 0.9931, BF = 1.001 and AF = 1.053). In the prediction of kinetic parameters, W model also gave better and well-directed results compared with the other mathematical models used in the study. When an independent set of experimental data was used in the validation of mathematical models, similar validation results were obtained and W model was also successful. Consequently, W model could be used for more progress of fermentation process in biofilm reactor with CEM, which can serve as a universal equation.

Original languageEnglish (US)
JournalBiomass Conversion and Biorefinery
DOIs
StatePublished - Jan 1 2019

Fingerprint

Biofilms
Fermentation
Ethanol
Mathematical models
Mean square error
Enzyme kinetics
Cell growth
Kinetic parameters
Substrates

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment

Cite this

@article{40f5f36fb7d84ad6b9fc86f3a9b2654d,
title = "Application of mathematical models to ethanol fermentation in biofilm reactor with carob extract",
abstract = "Mathematical models not only ensure information about kinetic-metabolic nature of fermentations, but also facilitate their control and optimization. In the study, flexible ten models were evaluated and employed to describe the ethanol fermentation in a biofilm reactor with a carob extract medium (CEM). Findings indicated that W model well fitted the experimental data of cell growth (root mean square error (RMSE) = 0.289 g/L, mean absolute error (MAE) = 0.237 g/L, regression coefficient (R 2 ) = 0.9944, bias factor (BF) = 1.021, and accuracy factor (AF) = 1.047), ethanol production (RMSE = 1.609 g/L, MAE = 1.277 g/L, R 2  = 0.9774, BF = 1.178, and AF = 1.283), and substrate consumption (RMSE = 2.493 g/L, MAE = 1.546 g/L, R 2  = 0.9931, BF = 1.001 and AF = 1.053). In the prediction of kinetic parameters, W model also gave better and well-directed results compared with the other mathematical models used in the study. When an independent set of experimental data was used in the validation of mathematical models, similar validation results were obtained and W model was also successful. Consequently, W model could be used for more progress of fermentation process in biofilm reactor with CEM, which can serve as a universal equation.",
author = "Mustafa Germec and Cheng, {Kuan Chen} and Mustafa Karhan and Ali Demirci and Irfan Turhan",
year = "2019",
month = "1",
day = "1",
doi = "10.1007/s13399-019-00425-1",
language = "English (US)",
journal = "Biomass Conversion and Biorefinery",
issn = "2190-6815",
publisher = "Springer Verlag",

}

Application of mathematical models to ethanol fermentation in biofilm reactor with carob extract. / Germec, Mustafa; Cheng, Kuan Chen; Karhan, Mustafa; Demirci, Ali; Turhan, Irfan.

In: Biomass Conversion and Biorefinery, 01.01.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Application of mathematical models to ethanol fermentation in biofilm reactor with carob extract

AU - Germec, Mustafa

AU - Cheng, Kuan Chen

AU - Karhan, Mustafa

AU - Demirci, Ali

AU - Turhan, Irfan

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Mathematical models not only ensure information about kinetic-metabolic nature of fermentations, but also facilitate their control and optimization. In the study, flexible ten models were evaluated and employed to describe the ethanol fermentation in a biofilm reactor with a carob extract medium (CEM). Findings indicated that W model well fitted the experimental data of cell growth (root mean square error (RMSE) = 0.289 g/L, mean absolute error (MAE) = 0.237 g/L, regression coefficient (R 2 ) = 0.9944, bias factor (BF) = 1.021, and accuracy factor (AF) = 1.047), ethanol production (RMSE = 1.609 g/L, MAE = 1.277 g/L, R 2  = 0.9774, BF = 1.178, and AF = 1.283), and substrate consumption (RMSE = 2.493 g/L, MAE = 1.546 g/L, R 2  = 0.9931, BF = 1.001 and AF = 1.053). In the prediction of kinetic parameters, W model also gave better and well-directed results compared with the other mathematical models used in the study. When an independent set of experimental data was used in the validation of mathematical models, similar validation results were obtained and W model was also successful. Consequently, W model could be used for more progress of fermentation process in biofilm reactor with CEM, which can serve as a universal equation.

AB - Mathematical models not only ensure information about kinetic-metabolic nature of fermentations, but also facilitate their control and optimization. In the study, flexible ten models were evaluated and employed to describe the ethanol fermentation in a biofilm reactor with a carob extract medium (CEM). Findings indicated that W model well fitted the experimental data of cell growth (root mean square error (RMSE) = 0.289 g/L, mean absolute error (MAE) = 0.237 g/L, regression coefficient (R 2 ) = 0.9944, bias factor (BF) = 1.021, and accuracy factor (AF) = 1.047), ethanol production (RMSE = 1.609 g/L, MAE = 1.277 g/L, R 2  = 0.9774, BF = 1.178, and AF = 1.283), and substrate consumption (RMSE = 2.493 g/L, MAE = 1.546 g/L, R 2  = 0.9931, BF = 1.001 and AF = 1.053). In the prediction of kinetic parameters, W model also gave better and well-directed results compared with the other mathematical models used in the study. When an independent set of experimental data was used in the validation of mathematical models, similar validation results were obtained and W model was also successful. Consequently, W model could be used for more progress of fermentation process in biofilm reactor with CEM, which can serve as a universal equation.

UR - http://www.scopus.com/inward/record.url?scp=85065729848&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065729848&partnerID=8YFLogxK

U2 - 10.1007/s13399-019-00425-1

DO - 10.1007/s13399-019-00425-1

M3 - Article

JO - Biomass Conversion and Biorefinery

JF - Biomass Conversion and Biorefinery

SN - 2190-6815

ER -