AI Article Synopsis
- Lignin, a natural aromatic polymer found in plant biomass, can be transformed into valuable liquid fuel through phenolic compounds, prompting research into effective extraction methods. * This study utilized microwave-assisted solvent extraction of rubberwood sawdust with ethanol and isopropanol at different power levels (100 W and 200 W) and extraction times (5 to 30 minutes) to determine lignin yield. * Results indicated that higher extraction times and microwave power increased lignin yield, with the best yield of 6.26 wt.% achieved using ethanol for 30 minutes at 200 W.
Article Abstract
Lignin is the most abundant natural aromatic polymer, especially in plant biomass. Lignin-derived phenolic compounds can be processed into high-value liquid fuel. This study aimed to determine the yield of lignin by the microwave-assisted solvent extraction method and to characterize some essential properties of the extracted lignin. Rubberwood sawdust () was extracted for lignin with an organic-based solvent, either ethanol or isopropanol, in a microwave oven operating at 2450 MHz. Two levels of power of microwave, 100 W and 200 W, were tested as well as five extraction times (5, 10, 15, 20, 25, and 30 min). The extracted lignin was characterized by Klason lignin, Fourier transform infrared spectroscopy (FT-IR), 2D HSQC NMR, Ultraviolet-visible spectrophotometry (UV-vis), and Bomb calorimeter. The results showed that the yield of extracted lignin increased with the extraction time and power of the microwave. In addition, the extraction yield with ethanol was higher than the yield with isopropanol. The highest yield was 6.26 wt.%, with ethanol, 30 min extraction time, and 200 W microwave power.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8963077 | PMC |
| http://dx.doi.org/10.3390/polym14040814 | DOI Listing |
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