Arfat, Md and Mustafa, Abu Hasnat and Rasidi, Roslan and Mohd Hasbi, Ab. Rahim (2022) Lignin extractions from oil palm empty fruit bunch under pressurized and inert conditions. In: The 6th National Conference for Postgraduate Research (NCON-PGR 2022) , 15 November 2022 , Virtual Conference, Universiti Malaysia Pahang, Malaysia. p. 124..
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Abstract
In this study, for the first time, lignin was extracted from palm oil empty fruit bunch (EFB) by using a pressurized reactor in the presence of deep eutectic solvents (DES). DES is prepared by mixing choline chloride and oxalic acid at a ratio of 1:1, successfully extracting around 30 wt.% of lignin under a relatively mild temperature. Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) are used in order to analyse lignin, whereas X-ray powder diffraction (XRD) is used to investigate the solid residues. FTIR analysis revealed the characteristics of lignin with a major functional group composed of phenolic, aliphatic hydroxyl and conjugated alkene in the FTIR spectra. This was further confirmed with thermal stability data using DSC. The crystallinity of the solid residue consisting of cellulose was observed to be affected by different temperatures, with the highest value (43.5 %) at 80 oC. The yield of lignin extracted under a pressurized and inert environment shows more than double the value of lignin as compared to the analogue process under atmospheric pressure and also shows comparable lignin yield with microwave assisted extraction systems. Thus, it provides a new, facile, and efficient approach to the delignification of lignocellulosic biomass.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Uncontrolled Keywords: | Empty fruit bunch (EFB), Lignin, Deep eutectic solvents (DES), High-pressure reactor |
| Subjects: | H Social Sciences > HD Industries. Land use. Labor > HD28 Management. Industrial Management Q Science > Q Science (General) T Technology > T Technology (General) |
| Faculty/Division: | Faculty of Industrial Sciences And Technology Institute of Postgraduate Studies |
| Depositing User: | Mr Muhamad Firdaus Janih@Jaini |
| Date Deposited: | 10 Feb 2023 03:26 |
| Last Modified: | 10 Feb 2023 03:26 |
| URI: | http://umpir.ump.edu.my/id/eprint/36961 |
| Download Statistic: | View Download Statistics |
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