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Oxidation and thermal stability enhancement of emulsified palm oil methyl ester in diesel engine / Syeda Reham Shahed

Energy coming from fossil fuels are non-renewable, therefore, they have a negative effect on the environment namely- greenhouse effect or global warming. Researchers are conducting a lot of studies on renewable fuel to practice it as an alternative fuel for transportation and other uses. Biofuel has...

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Main Author: Syeda, Reham Shahed
Format: Thesis
Published: 2017
Subjects:
T Technology (General)
TJ Mechanical engineering and machinery
Online Access:http://studentsrepo.um.edu.my/8025/4/Syeda_Reham_Shahed.jpg
http://studentsrepo.um.edu.my/8025/8/Reham_(KGA_140006).pdf
http://studentsrepo.um.edu.my/8025/
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spelling my.um.stud.80252020-09-16T23:19:36Z Oxidation and thermal stability enhancement of emulsified palm oil methyl ester in diesel engine / Syeda Reham Shahed Syeda, Reham Shahed T Technology (General) TJ Mechanical engineering and machinery Energy coming from fossil fuels are non-renewable, therefore, they have a negative effect on the environment namely- greenhouse effect or global warming. Researchers are conducting a lot of studies on renewable fuel to practice it as an alternative fuel for transportation and other uses. Biofuel has been widely accepted as a very potential renewable energy that can replace the conventional use of fossil fuel for diesel engine. Biodiesels can be used in conventional diesel engine without any modification and can also reduce harmful emissions. However, biodiesel have low oxidation stability which sometimes affect badly while storing and using it as fuel. This research is aimed to improve oxidation stability as well as thermal stability of biodiesel through emulsification process. In the emulsification process water is added to biodiesel with the help of surfactant (TritonX-100) and co-surfactant (ethanol) to make the mixture stable. FTIR (Fourier transform infrared spectroscopy) and proton NMR (Nuclear magnetic resonance) are used to analyze the chemical bond characteristics of biodiesel emulsion. Oxidation stability, thermal stability and lubrication characteristics of emulsified palm oil biodiesel is then investigated. It has been found that the oxidation stability of emulsified biodiesel is 102% higher than diesel and 27% higher than neat biodiesel. Thermo-gravimetric analysis shows improved thermal property of biodiesel emulsion compared to both diesel and neat biodiesel. The friction and wear test of emulsified biodiesel conducted with four ball tribo tester according to ASTM 4172 method (1200 rpm, 75°C temperature and 40 kg load). The improved lubricating performance found with emulsified biodiesel due to lower coefficient of friction and wear scar diameter compared to petroleum diesel fuel and neat biodiesel. In conclusion, addition of TritonX-100 and ethanol with small amount of water with biodiesel improves its oxidation and thermal stability and own improved lubricating characteristics compared to diesel and biodiesel fuel. 2017-08 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/8025/4/Syeda_Reham_Shahed.jpg application/pdf http://studentsrepo.um.edu.my/8025/8/Reham_(KGA_140006).pdf Syeda, Reham Shahed (2017) Oxidation and thermal stability enhancement of emulsified palm oil methyl ester in diesel engine / Syeda Reham Shahed. Masters thesis, University of Malaya. http://studentsrepo.um.edu.my/8025/
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Student Repository
url_provider http://studentsrepo.um.edu.my/
topic T Technology (General)
TJ Mechanical engineering and machinery
spellingShingle T Technology (General)
TJ Mechanical engineering and machinery
Syeda, Reham Shahed
Oxidation and thermal stability enhancement of emulsified palm oil methyl ester in diesel engine / Syeda Reham Shahed
description Energy coming from fossil fuels are non-renewable, therefore, they have a negative effect on the environment namely- greenhouse effect or global warming. Researchers are conducting a lot of studies on renewable fuel to practice it as an alternative fuel for transportation and other uses. Biofuel has been widely accepted as a very potential renewable energy that can replace the conventional use of fossil fuel for diesel engine. Biodiesels can be used in conventional diesel engine without any modification and can also reduce harmful emissions. However, biodiesel have low oxidation stability which sometimes affect badly while storing and using it as fuel. This research is aimed to improve oxidation stability as well as thermal stability of biodiesel through emulsification process. In the emulsification process water is added to biodiesel with the help of surfactant (TritonX-100) and co-surfactant (ethanol) to make the mixture stable. FTIR (Fourier transform infrared spectroscopy) and proton NMR (Nuclear magnetic resonance) are used to analyze the chemical bond characteristics of biodiesel emulsion. Oxidation stability, thermal stability and lubrication characteristics of emulsified palm oil biodiesel is then investigated. It has been found that the oxidation stability of emulsified biodiesel is 102% higher than diesel and 27% higher than neat biodiesel. Thermo-gravimetric analysis shows improved thermal property of biodiesel emulsion compared to both diesel and neat biodiesel. The friction and wear test of emulsified biodiesel conducted with four ball tribo tester according to ASTM 4172 method (1200 rpm, 75°C temperature and 40 kg load). The improved lubricating performance found with emulsified biodiesel due to lower coefficient of friction and wear scar diameter compared to petroleum diesel fuel and neat biodiesel. In conclusion, addition of TritonX-100 and ethanol with small amount of water with biodiesel improves its oxidation and thermal stability and own improved lubricating characteristics compared to diesel and biodiesel fuel.
format Thesis
author Syeda, Reham Shahed
author_facet Syeda, Reham Shahed
author_sort Syeda, Reham Shahed
title Oxidation and thermal stability enhancement of emulsified palm oil methyl ester in diesel engine / Syeda Reham Shahed
title_short Oxidation and thermal stability enhancement of emulsified palm oil methyl ester in diesel engine / Syeda Reham Shahed
title_full Oxidation and thermal stability enhancement of emulsified palm oil methyl ester in diesel engine / Syeda Reham Shahed
title_fullStr Oxidation and thermal stability enhancement of emulsified palm oil methyl ester in diesel engine / Syeda Reham Shahed
title_full_unstemmed Oxidation and thermal stability enhancement of emulsified palm oil methyl ester in diesel engine / Syeda Reham Shahed
title_sort oxidation and thermal stability enhancement of emulsified palm oil methyl ester in diesel engine / syeda reham shahed
publishDate 2017
url http://studentsrepo.um.edu.my/8025/4/Syeda_Reham_Shahed.jpg
http://studentsrepo.um.edu.my/8025/8/Reham_(KGA_140006).pdf
http://studentsrepo.um.edu.my/8025/
_version_ 1738506093076676608
score 13.211869

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