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Characterization of lignin extracted from eucalyptus wood chip by organosolv and subsequent alkaline precipitation processes |
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| รหัสดีโอไอ | |
| Title | Characterization of lignin extracted from eucalyptus wood chip by organosolv and subsequent alkaline precipitation processes |
| Creator | 1. Thepparat Klamrassamee 2. Navadol Laosiripojana 3. Dylan Cronin 4. Lalehvash Moghaddam 5. William O. S. Doherty |
| Publisher | Joint Graduate School of Energy and Environment |
| Publication Year | 2557 |
| Keyword | Organosolv, precipitation, lignin, association, and contamination |
| Abstract | The present work studied the characteristics of lignin extracted from eucalyptus wood chip by organosolv (as called organosolv lignin; OL), and organosolv subsequent alkaline precipitation (as called organosolv lignin subsequent alkaline precipitation; OLA). It is noted that lignin from soda process (as called soda lignin; SL) was also characterized for comparison. In detail, OL was fractionated using ternary mixture of methyl isobutyl ketone (MIBK): methanol: water in the presence with 0.008 M of H2SO4 acid promoters at 180?C for 60 min. Then, it was characterized by Klason lignin, elemental analysis, thermal gravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and Fourier transform-Infrared spectroscopy (FT-IR) to determinate the physico-chemical properties and structural features. When compared with OLA, the result of FT-IR proved the OL structure not changed when OL was treated with alkaline precipitation. Moreover; organosolv subsequent alkaline precipitation could remove the contaminations content of OL (i.e. sugar, sulfur, MIBK) due to their association between lignin and contaminations. |
| ISBN | 978-616-92228-1-1 |
