School of Material Science and Engineering, University of Jinan, Jinan 250022, PR China.
College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, PR China.
Bioresour Technol. 2022 May;351:127055. doi: 10.1016/j.biortech.2022.127055. Epub 2022 Mar 23.
Aqueous phase of bio-oil (APBO) is water-rich but also contains some sugar-derivatives and phenolics. APBO has little potential as feedstock for producing biofuel, but can be potentially used as medium for hydrothermal carbonization (HTC) of biomass. In this study, the HTC of lignin in APBO was conducted, aiming to probe the influence of the organics in APBO on property of the hydrochar. The results indicated that the organics in APBO cross-polymerized with lignin derivatives, resulted in the yield of hydrochar to exceed 100%. In addition, APBO promotes the deoxygenation but does not promote dehydrogenation. More aliphatic structures are generated in the hydrochar, reducing its thermal stability. In addition, the hydrochar from APBO also shows the improved combustion performance by lowering the activation energy and the ignition temperature (180 vs 240 °C).
生物油的水相（APBO）富含水，但也含有一些糖衍生物和酚类物质。APBO 作为生产生物燃料的原料潜力不大，但可作为生物质水热碳化（HTC）的介质。在这项研究中，进行了 APBO 中木质素的 HTC，旨在探究 APBO 中的有机物对水炭性质的影响。结果表明，APBO 中的有机物与木质素衍生物发生了交叉聚合，导致水炭的产率超过 100%。此外，APBO 促进脱氧而不促进脱氢。水炭中生成了更多的脂肪族结构，降低了其热稳定性。此外，APBO 制得的水炭还通过降低活化能和点火温度（180 对 240°C）来改善燃烧性能。
