Value-added Utilization of Lignocellulosic Biomass Wastes via Regeneration and Depolymerization of Cellulose Fibres

Lignocellulosic biomass (LB) is most abundant renewable source in Earth. However, annual increasing generation and improper disposal of LB wastes had caused serious environmental issues. The adverse environmental impact could be mitigated through conversion of LB wastes into useful products. In this...

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Main Author:	Voon, Lee Ken
Format:	Thesis
Language:	English
Published:	2017
Subjects:	Q Science (General) QC Physics QD Chemistry
Online Access:	http://ir.unimas.my/id/eprint/20972/3/Value-added%20utilization%20of%20lignocellulosic%20fulltext.pdf
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id	my-unimas-ir.20972
record_format	uketd_dc
spelling	my-unimas-ir.209722023-05-15T02:47:58Z Value-added Utilization of Lignocellulosic Biomass Wastes via Regeneration and Depolymerization of Cellulose Fibres 2017 Voon, Lee Ken Q Science (General) QC Physics QD Chemistry Lignocellulosic biomass (LB) is most abundant renewable source in Earth. However, annual increasing generation and improper disposal of LB wastes had caused serious environmental issues. The adverse environmental impact could be mitigated through conversion of LB wastes into useful products. In this research, value-added utilization lignocellulosic biomass wastes were explored via two different approaches: depolymerization of cellulose fibres to produce cello-oligomers of various chain lengths, and regeneration of cellulose in the form of cellulose beads with tailored mean diameters. In first approach, cellulose fibres extracted from printed paper wastes were effectively depolymerized by dissolution in an ionic liquid and in the presence of Amberlyst 15 DRY as a catalyst, to generate cello-oligomers of desirable chain lengths under mild reaction conditions. The yield of cello-oligomers, their chain length as well as their mean DPw distributions were modulated by varying the depolymerization conditions. In addition, cellulose fibres derived from LB wastes such as sawdust, sugarcane bagasse, corn cobs, sago pith wastes were depolymerized in ionic liquid in the presence of a solid acid catalyst. unimas 2017 Thesis http://ir.unimas.my/id/eprint/20972/ http://ir.unimas.my/id/eprint/20972/3/Value-added%20utilization%20of%20lignocellulosic%20fulltext.pdf text en validuser phd doctoral UNIMAS
institution	Universiti Malaysia Sarawak
collection	UNIMAS Institutional Repository
language	English
topic	Q Science (General) QC Physics QD Chemistry
spellingShingle	Q Science (General) QC Physics QD Chemistry Voon, Lee Ken Value-added Utilization of Lignocellulosic Biomass Wastes via Regeneration and Depolymerization of Cellulose Fibres
description	Lignocellulosic biomass (LB) is most abundant renewable source in Earth. However, annual increasing generation and improper disposal of LB wastes had caused serious environmental issues. The adverse environmental impact could be mitigated through conversion of LB wastes into useful products. In this research, value-added utilization lignocellulosic biomass wastes were explored via two different approaches: depolymerization of cellulose fibres to produce cello-oligomers of various chain lengths, and regeneration of cellulose in the form of cellulose beads with tailored mean diameters. In first approach, cellulose fibres extracted from printed paper wastes were effectively depolymerized by dissolution in an ionic liquid and in the presence of Amberlyst 15 DRY as a catalyst, to generate cello-oligomers of desirable chain lengths under mild reaction conditions. The yield of cello-oligomers, their chain length as well as their mean DPw distributions were modulated by varying the depolymerization conditions. In addition, cellulose fibres derived from LB wastes such as sawdust, sugarcane bagasse, corn cobs, sago pith wastes were depolymerized in ionic liquid in the presence of a solid acid catalyst.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Voon, Lee Ken
author_facet	Voon, Lee Ken
author_sort	Voon, Lee Ken
title	Value-added Utilization of Lignocellulosic Biomass Wastes via Regeneration and Depolymerization of Cellulose Fibres
title_short	Value-added Utilization of Lignocellulosic Biomass Wastes via Regeneration and Depolymerization of Cellulose Fibres
title_full	Value-added Utilization of Lignocellulosic Biomass Wastes via Regeneration and Depolymerization of Cellulose Fibres
title_fullStr	Value-added Utilization of Lignocellulosic Biomass Wastes via Regeneration and Depolymerization of Cellulose Fibres
title_full_unstemmed	Value-added Utilization of Lignocellulosic Biomass Wastes via Regeneration and Depolymerization of Cellulose Fibres
title_sort	value-added utilization of lignocellulosic biomass wastes via regeneration and depolymerization of cellulose fibres
granting_institution	UNIMAS
publishDate	2017
url	http://ir.unimas.my/id/eprint/20972/3/Value-added%20utilization%20of%20lignocellulosic%20fulltext.pdf
_version_	1783728212448116736

Value-added Utilization of Lignocellulosic Biomass Wastes via Regeneration and Depolymerization of Cellulose Fibres

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