PRODUCTION, CHARACTERIZATION AND KINETIC MODELING OF BIOETHANOL PRODUCTION FROM CASSAVA TUBERS

Umeuzuegbu, J. C.

Authors & affiliations

Umeuzuegbu, J. C.

Department of Chemical Engineering, Chukwuemeka Odumegwu Ojukwu University, Uli, Anambra State, Nigeria.

Abstract

Summary

The rapid depletion of the world major energy source, the fossil fuel coupled with the numerous problems associated with its use
has resulted in the search for renewable, sustainable and environmentally friendly fuel. Among the various options investigated,
bio-ethanol ranks among the foremost alternatives to fossil fuel. This research work focused on production, characterization and
kinetic modeling of bio-ethanol production from cassava tubers. Bio-ethanol was produced by enzyme hydrolysis of cassava pulp
followed by simultaneous sacharification and fermentation of the glucose produced thereof using yeast. The fermentation process
was optimized using one factor at a time method in other to determine the influence of fermentation parameters on the yield of
bio-ethanol. The physiochemical properties of the bio-ethanol produced were determined based on American Standards for
Testing and Materials (ASTM) method. The kinetics of bio-ethanol production was modeled based on Michaelis-Menten
equation. The optimum values of fermentation parameters that gave the highest yield of bio-ethanol are, fermentation temperature
35OC, fermentation time 6 days, yeast dosage 10g/L, glucose concentration 100g/L, pH 4.5 and agitation rate 160 rpm. The
physiochemical properties of the bio-ethanol produce were determined as, kinematic viscosity 1.54cst at 40OC, density 779
Kg/m3
, flash point 13.5OC, refractive index 1.364, octane number 102, sulphur content 0.06%, water content 0.05 ppm boiling
point 78OC, lower heating value 20.8 KJ/dm3
, pH 6.6. The data of variation of bio-ethanol concentration with fermentation time
was adequately modeled by Michalis-Menteen equation, hence the plot of 1/rA versus 1/CA, gave a straight line graph of slope
km/Vm = 0.795 and the intercept 1/Vm = 0.048. Insertion of the values into Michaelis-Menten equation gave the rate of
fermentation reaction, rA.

Keywords

Index Terms

Bio-ethanol Fermentation Hydrolysis Kinetic modeling Saccharification

Citation & details

How to cite this article

Authors: Umeuzuegbu, J. C.

Volume/Issue: Volume 5, Issue 1

Pages: 1-11

Published: May 31, 2022

Affiliations: Department of Chemical Engineering, Chukwuemeka Odumegwu Ojukwu University, Uli, Anambra State, Nigeria.

Umeuzuegbu, J. C. (2022). PRODUCTION, CHARACTERIZATION AND KINETIC MODELING OF BIOETHANOL PRODUCTION FROM CASSAVA TUBERS. International Journal of Innovative Engineering, Technology & Science (IJIETS), Volume 5, Issue 1, 1-11.

Umeuzuegbu, J. C.. "PRODUCTION, CHARACTERIZATION AND KINETIC MODELING OF BIOETHANOL PRODUCTION FROM CASSAVA TUBERS." International Journal of Innovative Engineering, Technology & Science (IJIETS), vol. Volume 5, Issue 1, 2022, pp. 1-11.

Umeuzuegbu, J. C.. "PRODUCTION, CHARACTERIZATION AND KINETIC MODELING OF BIOETHANOL PRODUCTION FROM CASSAVA TUBERS." International Journal of Innovative Engineering, Technology & Science (IJIETS) Volume 5, Issue 1 (2022): 1-11.

@article{productioncharacterizationandkineticmodelingofbioethanolproductionfromcassavatubers2022, author = {Umeuzuegbu, J. C.}, title = {PRODUCTION, CHARACTERIZATION AND KINETIC MODELING OF BIOETHANOL PRODUCTION FROM CASSAVA TUBERS}, journal = {International Journal of Innovative Engineering, Technology & Science (IJIETS)}, year = {2022}, volume = {Volume 5, Issue 1}, pages = {1-11} }

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