Dissolution Study of Lignin from Coconut Fiber as Lignocellulosic Biomass Using Eutectic Based Ionic Liquids

DOI

10.2991/978-2-38476-283-5_33How to use a DOI?

Keywords

Cholinium Chloride; Delignification; Eutectic Ionic Liquids; Lignin; Oxalic Acid; Zinc Chloride

Abstract

Eutectic Based Ionic Liquids (EILs) are a new alternative to conventional ionic liquids which are considered cheaper, more environmentally friendly and biodegradable for use as a solvent in the chemical process of lignin. The aim of this research is to study the chemical process of lignin dissolution and delignification of biomass waste containing lignocellulose such as coconut fiber using cholinium chloride based EILs. The EILs were synthesized by a simple heating method using choline chloride with oxalic acid (CO) and ZnCl2 (CZ). The synthesized EILs were then characterized using FTIR and NMR and their density was measured. The results show that the synthesized EILs have a density of 1.2864 g/cm3 and 1.7526 g/cm3 for CO and CZ EILs, respectively. FTIR and NMR studies on EILs confirmed that EILs were successfully synthesized. The solubility of synthesized EILs in lignin and cellulose was 42.03%; 5.44% and 32.51%; 7.73% for EILs CO and CZ respectively. The results of delignification of coconut fiber show that lignin from coconut fiber can be dissolved, indicated by changes in the color of EILs after delignification and separation. FTIR studies confirmed that the delignified lignin was shown to be at peak intensity in 1700–1400 cm-1 as the characteristic peak of lignin and NMR studies showed that there was a part of lignin that appeared in the NMR spectrum. The characteristics of coconut fiber after delignification show an increase in intensity for the functional groups present in cellulose, as shown by the FTIR results.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Ahmad Mudzakir
AU  - Asep Bayu Dani Nandiyanto
AU  - Eddy Heraldy
AU  - Jon Efendi
AU  - Karina Mulya Rizky
AU  - Mia Widyaningsih
AU  - Lewi Stefanus Anggiat
PY  - 2024
DA  - 2024/09/03
TI  - Dissolution Study of Lignin from Coconut Fiber as Lignocellulosic Biomass Using Eutectic Based Ionic Liquids
BT  - Proceedings of the  9th Mathematics, Science, and Computer Science Education International Seminar (MSCEIS 2023)
PB  - Atlantis Press
SP  - 347
EP  - 370
SN  - 2352-5398
UR  - https://doi.org/10.2991/978-2-38476-283-5_33
DO  - 10.2991/978-2-38476-283-5_33
ID  - Mudzakir2024
ER  -