Bio-oil from microwave pretreated microalgal biomass using supercritical carbon dioxide (SCCO2) system / Siti Nurhanis Ibrahim

Chlorella vulgaris is one of the promising microalgal strains that can produce high yield of bio-oils. Chlorella vulgaris has higher growth rate which was 0.9288 day-1 compared with Neochloris oleoabundans was at 0.7369 day-1. Furthermore, C. vulgaris has high lipid content compared with N. oleoabun...

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Main Author:	Ibrahim, Siti Nurhanis
Format:	Thesis
Language:	English
Published:	2018
Subjects:	Cryptogams Biomass
Online Access:	https://ir.uitm.edu.my/id/eprint/86335/1/86335.pdf
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id	my-uitm-ir.86335
record_format	uketd_dc
spelling	my-uitm-ir.863352024-09-27T08:23:38Z Bio-oil from microwave pretreated microalgal biomass using supercritical carbon dioxide (SCCO2) system / Siti Nurhanis Ibrahim 2018 Ibrahim, Siti Nurhanis Cryptogams Biomass Chlorella vulgaris is one of the promising microalgal strains that can produce high yield of bio-oils. Chlorella vulgaris has higher growth rate which was 0.9288 day-1 compared with Neochloris oleoabundans was at 0.7369 day-1. Furthermore, C. vulgaris has high lipid content compared with N. oleoabundans. The selected microalga, C. vulgaris was pretreated with microwave irradiation prior to extraction using supercritical carbon dioxide (SCCO2). Fourier transform infrared spectroscopy (FTIR) analysis showed microwave irradiation pretreatment does not affect the material composition of C. vulgaris. Scanning electron microscopy (SEM) of the microwave irradiation pretreated microalgae showed agglomeration of distortion and rupturing of microalgae cell walls. Optimization of the SCCO2 process parameters (pressure, temperature and CO2 flow rate) was conducted by using response surface methodology (central composite design, CCD). Two factors significantly affect the extraction yield comprising of temperature and pressure. 2018 Thesis https://ir.uitm.edu.my/id/eprint/86335/ https://ir.uitm.edu.my/id/eprint/86335/1/86335.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Applied Sciences
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Cryptogams Biomass
spellingShingle	Cryptogams Biomass Ibrahim, Siti Nurhanis Bio-oil from microwave pretreated microalgal biomass using supercritical carbon dioxide (SCCO2) system / Siti Nurhanis Ibrahim
description	Chlorella vulgaris is one of the promising microalgal strains that can produce high yield of bio-oils. Chlorella vulgaris has higher growth rate which was 0.9288 day-1 compared with Neochloris oleoabundans was at 0.7369 day-1. Furthermore, C. vulgaris has high lipid content compared with N. oleoabundans. The selected microalga, C. vulgaris was pretreated with microwave irradiation prior to extraction using supercritical carbon dioxide (SCCO2). Fourier transform infrared spectroscopy (FTIR) analysis showed microwave irradiation pretreatment does not affect the material composition of C. vulgaris. Scanning electron microscopy (SEM) of the microwave irradiation pretreated microalgae showed agglomeration of distortion and rupturing of microalgae cell walls. Optimization of the SCCO2 process parameters (pressure, temperature and CO2 flow rate) was conducted by using response surface methodology (central composite design, CCD). Two factors significantly affect the extraction yield comprising of temperature and pressure.
format	Thesis
qualification_level	Master's degree
author	Ibrahim, Siti Nurhanis
author_facet	Ibrahim, Siti Nurhanis
author_sort	Ibrahim, Siti Nurhanis
title	Bio-oil from microwave pretreated microalgal biomass using supercritical carbon dioxide (SCCO2) system / Siti Nurhanis Ibrahim
title_short	Bio-oil from microwave pretreated microalgal biomass using supercritical carbon dioxide (SCCO2) system / Siti Nurhanis Ibrahim
title_full	Bio-oil from microwave pretreated microalgal biomass using supercritical carbon dioxide (SCCO2) system / Siti Nurhanis Ibrahim
title_fullStr	Bio-oil from microwave pretreated microalgal biomass using supercritical carbon dioxide (SCCO2) system / Siti Nurhanis Ibrahim
title_full_unstemmed	Bio-oil from microwave pretreated microalgal biomass using supercritical carbon dioxide (SCCO2) system / Siti Nurhanis Ibrahim
title_sort	bio-oil from microwave pretreated microalgal biomass using supercritical carbon dioxide (scco2) system / siti nurhanis ibrahim
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Applied Sciences
publishDate	2018
url	https://ir.uitm.edu.my/id/eprint/86335/1/86335.pdf
_version_	1811768709208866816

Bio-oil from microwave pretreated microalgal biomass using supercritical carbon dioxide (SCCO2) system / Siti Nurhanis Ibrahim

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