Effect Of Various Pre-Treatments Onto Oil Palm Frond Leaves For Bioethanol Production As Renewable Bioenergy Source In Fuel Cell Application

Azani, Nur Fatin Silmi Mohd (2025) Effect Of Various Pre-Treatments Onto Oil Palm Frond Leaves For Bioethanol Production As Renewable Bioenergy Source In Fuel Cell Application. PhD thesis, Perpustakaan Hamzah Sendut.

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Abstract

Oil palm frond leaves (opfls) are one of the biomass by-products originating from oil palm plantations. Currently, opfls are under-valued since they can be classified as a high recalcitrance feedstock due to the high lignin and hemicellulose content. This current study proposed an alternative of using opfls as a bioenergy source. This study highlighted the impact of different pre-treatments on the physicochemical properties, enzymatic digestibility, and fermentation efficiency of pretreated opfls. Each of the pre-treatments revealed the distinctive traits that influence the efficiency of the conversion of cellulose into bioethanol. From physicochemical pretreatments, steam explosion much more effective in disrupting the compact cell wall structure of opfls in contrast to autohydrolysis pre-treatment, by a vast dissolution of hemicellulose and depolymerization of lignin. The pre-impregnation with h2so4 prior to steam explosion was beneficial to enhance the hemicellulose removal up to 89.94 %. The cellulose content of the autohydrolysis pre-treated and steam-exploded opfls pulp were enhanced up to 31.03 wt.% and 39.18 wt.%, respectively. Meanwhile, the dilute naoh pre-treatment enhanced the delignification by 87.14 %, led to the enrichment of cellulosic fraction up to 51.21 wt.%. The removal of hemicellulose and lignin fraction was confirmed by the reduction of xylan c=o peak at 1730 cm-1 and lignin structural units c=o peak at 1600 cm-1, observed in attenuated total reflection (atr) spectra

Item Type: Thesis (PhD)
Subjects: Q Science > QD Chemistry > QD1-999 Chemistry
Divisions: Pusat Pengajian Sains Kimia (School of Chemical Sciences) > Thesis
Depositing User: Mr Hasmizar Mansor
Date Deposited: 13 May 2026 02:40
Last Modified: 13 May 2026 02:40
URI: http://eprints.usm.my/id/eprint/64184

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