Abstract
Bamboo residues were liquefied in a mixture of glycerol and methanol in the presence of sulfuric acid using microwave energy. We investigated the effects of liquefaction conditions, including glycerol/methanol ratio, liquefaction temperature, and reaction time on the conversion yield. The optimal liquefaction conditions were under the temperature of 120 °C, the reaction time of 7 min, the glycerol–methanol–bamboo ratio of 8/0/2 (W/W), and the microwave power of 300 W. Maximum conversion yield was 96.7 %. The liquid products were separated into two contents (water soluble part and precipitate part) by addition of a sufficient amount of water. By Fourier transform infrared (FT-IR), the water soluble content mainly contained glycerol and its derivate and carbohydrate degradation products, and the precipitate content was mainly lignin derivatives.
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References
Balat M (2008) Mechanisms of thermochemical biomass conversion processes. Part 3: reactions of liquefaction. Energy Source A 30(7):649–659
Chen F, Lu Z (2009) Liquefaction of wheat straw and preparation of rigid polyurethane foam from the liquefaction products. J App Polym Sci 111(1):508–516
Gao L, Liu Y, Lei H, Peng H, Ruan R (2010) Preparation of semirigid polyurethane foam with liquefied bamboo residues. J App Polym Sci 116(3):1694–1699
Hassan EM, Shukry N (2008) Polyhydric alcohol liquefaction of some lignocellulosic agricultural residues. Ind Crops Prod 27(1):33–38
Krzan A, Zagar E (2009) Microwave driven wood liquefaction with glycols. Bioresour Technol 100(12):3143–3146
Lin L, Hse CY (2005) Liquefaction of CCA-treated wood and elimination of metals from the solvents by precipitation. Holzforschung 59(3):285–288
Lin L, Yao Y, Shiraishi N (2001) Liquefaction mechanism of β-O-4 lignin model compound in the presence of phenol under acid catalysis. Part 1. Identification of the reaction products. Holzforschung 55(6):617–624
Mishra G, Saka S (2013) Effects of water in water/phenol mixtures on liquefaction of Japanese beech as treated under subcritical conditions. Holzforschung 67(3):241–247
Pan H, Zheng ZF, Hse CY (2012) Microwave-assisted liquefaction of wood with polyhydric alcohols and its application in preparation of polyurethane (PU) foams. Eur J Wood Prod 70(4):461–470
Thompson JC, He BB (2006) Characterization of crude glycerol from biodiesel production from multiple feedstocks. App Eng Agric 22(2):261–265
Xie H, Shi T (2006) Wood liquefaction by ionic liquids. Holzforschung 60(5):509–512
Xie J, Hse CY, Shupe T, Qi J, Pan H (2014) Liquefaction behaviors of bamboo residues in a glycerol-based solvent using microwave energy. J Appl Polym Sci. doi:10.1002/app.40207
Xu J, Jiang J, Hse CY, Shupe TF (2012) Renewable chemical feedstocks from integrated liquefaction processing of lignocellulosic materials using microwave energy. Green Chem 14(10):2821–2830
Zou X, Qin T, Huang L, Zhang X, Yang Z, Wang Y (2009) Mechanisms and main regularities of biomass liquefaction with alcoholic solvents. Energy Fuel 23(10):5213–5218
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Project funding: The project was supported by “Key Laboratory of Wood Industry and Furniture Engineering of Sichuan Provincial Colleges and Universities”.
The online version is available at http://www.springerlink.com
Corresponding editor: Yu Lei
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Xie, J., Qi, J., Hse, C. et al. Optimization for microwave-assisted direct liquefaction of bamboo residue in glycerol/methanol mixtures. J. For. Res. 26, 261–265 (2015). https://doi.org/10.1007/s11676-015-0032-1
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DOI: https://doi.org/10.1007/s11676-015-0032-1