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Optimization of solid state fermentation parameters for bioethanol production from waste glycerol using immobilized escherichia coli

The rapid industrial and economic development runs on fossil fuels and other energy sources. Limited oil reserves, environmental issues, and high transportation costs lead towards carbon unbiased renewable and sustainable fuel. Compared to other carbon-based fuels, biodiesel is attracted worldwide a...

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Main Author: Chilakamarry, Chaitanya Reddy
Format: Thesis
Language:English
Published: 2022
Subjects:
T Technology (General)
TA Engineering (General). Civil engineering (General)
Online Access:http://umpir.ump.edu.my/id/eprint/38154/1/Optimization%20of%20solid%20state%20fermentation%20parameters%20for%20bioethanol%20production%20from%20waste%20glycerol%20using%20immobilized%20escherichia%20coli.ir.pdf
http://umpir.ump.edu.my/id/eprint/38154/
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spelling my.ump.umpir.381542023-07-28T00:11:24Z http://umpir.ump.edu.my/id/eprint/38154/ Optimization of solid state fermentation parameters for bioethanol production from waste glycerol using immobilized escherichia coli Chilakamarry, Chaitanya Reddy T Technology (General) TA Engineering (General). Civil engineering (General) The rapid industrial and economic development runs on fossil fuels and other energy sources. Limited oil reserves, environmental issues, and high transportation costs lead towards carbon unbiased renewable and sustainable fuel. Compared to other carbon-based fuels, biodiesel is attracted worldwide as a biofuel to reduce global dependence on fossil fuels and the greenhouse effect. During biodiesel production, approximately 10% of glycerol is formed as byproduct. Malaysia is one of the largest producers of palm oil in the global market; thus, palm oil is used as the primary source for biodiesel production. In Malaysia, 480 million liters of biodiesel was produced in 2017 and is expected to reach 815 million liters in 2027, showing a 66% increase. Valorizing industrial waste is a big challenge to provide a significant economic advantage through the sustainable approach. Hence, there is an urgent need to find a compromising way to balance the environmental protection and sustainable reuse of the glycerol residue from the biodiesel industry. Our present work aims to produce bioethanol from biodiesel waste using immobilized Escherichia coli cells by solid-state fermentation. Hence, glycerol waste from the biodiesel industry is used as the carbon source for bioconversion to ethanol without primary treatment using Escherichia coli. Escherichia coli cells were immobilized using Na alginate. The stability, leakage and recycling of immobilized cells were studied for solid-state fermentation. High-performance liquid chromatography was used to analyze the concentration of glycerol and ethanol. Fourier transform infrared spectroscopy was used to analyze the functional group of glycerol and ethanol. Ethanol that has been produced was optimized by Response Surface Methodology. The important bio-process parameters such as inoculum (20%), mass substrate (20 g) and time (12 h) optimized to achieve maximal ethanol production of 10.0 g/L by immobilized E.coli cells. The kinetic study of free cells and immobilized cells were studied. The results obtained for maximum specific growth rate μmax was 0.028 h-1 and KS 6.23 g obtained for immobilized cells, while for the free cells, maximum growth rate μmax was 0.025 h-1 and KS of 5.11g. This study successfully used the biodiesel byproduct waste glycerol as the carbon source for the fermentation, using immobilized E.coli cells to produce ethanol. 2022-12 Thesis NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/38154/1/Optimization%20of%20solid%20state%20fermentation%20parameters%20for%20bioethanol%20production%20from%20waste%20glycerol%20using%20immobilized%20escherichia%20coli.ir.pdf Chilakamarry, Chaitanya Reddy (2022) Optimization of solid state fermentation parameters for bioethanol production from waste glycerol using immobilized escherichia coli. PhD thesis, Universiti Malaysia Pahang (Contributors, Thesis advisor: Mimi Sakinah, Abdul Munaim).
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic T Technology (General)
TA Engineering (General). Civil engineering (General)
spellingShingle T Technology (General)
TA Engineering (General). Civil engineering (General)
Chilakamarry, Chaitanya Reddy
Optimization of solid state fermentation parameters for bioethanol production from waste glycerol using immobilized escherichia coli
description The rapid industrial and economic development runs on fossil fuels and other energy sources. Limited oil reserves, environmental issues, and high transportation costs lead towards carbon unbiased renewable and sustainable fuel. Compared to other carbon-based fuels, biodiesel is attracted worldwide as a biofuel to reduce global dependence on fossil fuels and the greenhouse effect. During biodiesel production, approximately 10% of glycerol is formed as byproduct. Malaysia is one of the largest producers of palm oil in the global market; thus, palm oil is used as the primary source for biodiesel production. In Malaysia, 480 million liters of biodiesel was produced in 2017 and is expected to reach 815 million liters in 2027, showing a 66% increase. Valorizing industrial waste is a big challenge to provide a significant economic advantage through the sustainable approach. Hence, there is an urgent need to find a compromising way to balance the environmental protection and sustainable reuse of the glycerol residue from the biodiesel industry. Our present work aims to produce bioethanol from biodiesel waste using immobilized Escherichia coli cells by solid-state fermentation. Hence, glycerol waste from the biodiesel industry is used as the carbon source for bioconversion to ethanol without primary treatment using Escherichia coli. Escherichia coli cells were immobilized using Na alginate. The stability, leakage and recycling of immobilized cells were studied for solid-state fermentation. High-performance liquid chromatography was used to analyze the concentration of glycerol and ethanol. Fourier transform infrared spectroscopy was used to analyze the functional group of glycerol and ethanol. Ethanol that has been produced was optimized by Response Surface Methodology. The important bio-process parameters such as inoculum (20%), mass substrate (20 g) and time (12 h) optimized to achieve maximal ethanol production of 10.0 g/L by immobilized E.coli cells. The kinetic study of free cells and immobilized cells were studied. The results obtained for maximum specific growth rate μmax was 0.028 h-1 and KS 6.23 g obtained for immobilized cells, while for the free cells, maximum growth rate μmax was 0.025 h-1 and KS of 5.11g. This study successfully used the biodiesel byproduct waste glycerol as the carbon source for the fermentation, using immobilized E.coli cells to produce ethanol.
format Thesis
author Chilakamarry, Chaitanya Reddy
author_facet Chilakamarry, Chaitanya Reddy
author_sort Chilakamarry, Chaitanya Reddy
title Optimization of solid state fermentation parameters for bioethanol production from waste glycerol using immobilized escherichia coli
title_short Optimization of solid state fermentation parameters for bioethanol production from waste glycerol using immobilized escherichia coli
title_full Optimization of solid state fermentation parameters for bioethanol production from waste glycerol using immobilized escherichia coli
title_fullStr Optimization of solid state fermentation parameters for bioethanol production from waste glycerol using immobilized escherichia coli
title_full_unstemmed Optimization of solid state fermentation parameters for bioethanol production from waste glycerol using immobilized escherichia coli
title_sort optimization of solid state fermentation parameters for bioethanol production from waste glycerol using immobilized escherichia coli
publishDate 2022
url http://umpir.ump.edu.my/id/eprint/38154/1/Optimization%20of%20solid%20state%20fermentation%20parameters%20for%20bioethanol%20production%20from%20waste%20glycerol%20using%20immobilized%20escherichia%20coli.ir.pdf
http://umpir.ump.edu.my/id/eprint/38154/
_version_ 1772811361390166016
score 13.211869

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