Fractional characterization of a bio-oil derived from rice husk |
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Authors: | Rui LuGuo-Ping Sheng Yan-Yun HuPing Zheng Hong JiangYong Tang Han-Qing Yu |
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Affiliation: | a Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, Chinab Anhui Entry-Exit Inspection and Quarantine Bureau, Hefei 230061, China |
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Abstract: | Bio-oils usually contain many types of compounds with various chemical properties. A bio-oil sample derived from rice husk through rapid pyrolysis was fractioned using solvent- or solid-extraction techniques based on their various properties. Ultraviolet-visible spectroscopy, three-dimensional excitation-emission matrix (EEM) fluorescence spectroscopy and Fourier transform infrared spectroscopy were used to characterize their various spectral properties for further understanding the characteristics of the bio-oil. Bio-oil mostly contains many aromatic ring components, acidic polar fractions, few weak- and non-polar components. The results all show that the main compounds and functional groups in the various bio-oil fractions were different and depended on the fractionation methods. The compositions of the bio-oil fractions were also analyzed with a gas chromatography/mass spectrometry (GC/MS) method. The consistency of the results obtained from the spectrometric methods with the GC/MS method indicates that the spectrometric methods have a good potential for rapid and effective characterization of bio-oils. |
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Keywords: | Rice husk Pyrolysis Bio-oil Fluorescence spectroscopy FTIR GC/MS |
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