Dewaxing and deashing of sugarcane trash using solvent and aqueous extraction

Name: Khin, Mya Thandar

LCSH: Kasetsart University -- Theses. M.Eng. (Sustainable Energy and Resources Engineering) 2021

Classification :.LCCS: TP380

LCSH: Kasetsart University. -- Faculty of Engineering -- Theses

LCSH: Sugar -- Manufacture and refining

LCSH: Lignocellulose

LCSH: Biomass energy

LCSH: Waxes

Abstract: Sugarcane trash (SCT) is an underused plant residue which usually left on the field. In this study, we focused on developing the methods for de-waxing and de-ashing sugarcane trash. Various solvents (acetone, toluene, methyl isobutyl ketone (MIBK), and ethanol) were used for the de-waxing step with a reflux system at the respective solvent's boiling point for 6 h retention time. Toluene was found as the most potent solvent in terms of yield. The GC-MS analysis revealed the wax's major chemical components: gamma-sitosterol, stigmasterol, lanosterol, gammasitostenone, tris (2,4-di-tert-butylphenyl) phosphate, 2-Heptenoic acid and so on. Deashing was then applied for removing ash and minerals from the solid residues. Chemical pretreatment process in an aqueous solution with and without supplementation of dilute acid and alkaline at 80°C for retention time 2 h with Parr Instrument 0.65L or Autoclave was studied for deashing efficiency. Dilute acid and alkaline were shown for the potential as de-ashing. The element composition of raw sugarcane trash, dewaxed toluene and deashed HCl10% samples were determined by Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES). The element composition of raw sugarcane trash, dewaxed toluene and deashed HCl10% ash samples were determined by Energy Dispersive X-Ray Diffractometry (EDXRF), and Scanning Electron Microscope (SEM). Chemical compositions of the sugarcane trash and solid residues after the de-waxing and deashing steps were compared, showing efficient removals of wax and ash of the biomass. In de-ashing, HCl 10% is the best for chemical pretreatment process.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Penjit Srinophakun

Role: Thesis Advisor

Created: 2021

Modified: 2025-07-17

Issued: 2025-07-17

วิทยานิพนธ์/Thesis

application/pdf

URL: https://www.lib.ku.ac.th/KUthesis/2564/mya-tha-all.pdf

CallNumber: TP380 .K45

eng

DegreeName: Master of Engineering

Level: Master's Degree

Descipline: Sustainable Energy and Resources Engineering

Grantor: Kasetsart University

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