Satria, Heri and Kuroda, Kosuke and Miyamura, Kyohei and Ninomiya, Kazuaki and Takahashi, Kenji (2016) Poster : Carboxylate type zwitterion with DMSO co-solvent for one-pot ethanol fermentation from plant biomass. In: Hokuriku district lecture and research presentation, 25 November 2017, Fukui Institute of Technology Fukui Campus, JAPAN.

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Abstract

Ionic liquids (ILs) are liquid salts at room temperature which can dissolve cellulose efficiently. However ILs are toxic to microorganisms and therefore it inhibits ethanol fermentation from biomass. We have developed a new type of ionic liquid; a carboxylic acid-type liquid zwitterion (OE2imC3C), which satisfy both low toxicity and dissolution of cellulose. The characteristics allow a one-pot conversion process of biomass into ethanol via pretreatment, hydrolysis, and fermentation. However, the OE2imC3C has a problem: high viscosity. In this study, a co-solvent, dimethyl sulfoxide (DMSO), was added to decrease the viscosity. Pure OE2imC3C dissolved cellulose at 100 ºC (Figure1). However, after dissolving 6% of cellulose, the solution could not be stirred anymore due to its high viscosity. Consequently, we could not confirm whether over 6 wt% of cellulose can be dissolved or not. Here, DMSO enhanced the dissolution of cellulose: OE2imC3C with 40 wt% of DMSO can dissolve cellulose up to 14 wt%. Dissolution ability of OE2imC3C/DMSO mixtures decreased when over 40 wt% of DMSO was added.

Item Type: Conference or Workshop Item (Poster)
Subjects: Q Science > QD Chemistry
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Kimia
Depositing User: Dr. Eng. Heri Satria
Date Deposited: 29 Jan 2019 04:17
Last Modified: 29 Jan 2019 04:17
URI: http://repository.lppm.unila.ac.id/id/eprint/10628

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