State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Department of New Energy Science and Engineering, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Bioresour Technol. 2018 Oct;265:432-436. doi: 10.1016/j.biortech.2018.06.014. Epub 2018 Jun 15.
For efficient hydrothermal treatment of biomass, this study aims to figure out the correlations between complex chemical constitution of orange peel (OraPeel) as typical bio-waste and the physicochemical structure of its derived hydrochar, which could be utilized to adjust hydrochar properties for specific applications (e.g., adsorbent, fuel) by regulating respective proportions of each component in bio-waste. Cellulose, hemicellulose and lignin were used as the control variables of feedstocks composition in this work. After hydrothermal process, lignin added feedstock produced more hydrochar, which contained rougher surface with nearly doubled BET areas and more benzene rings. Hemicellulose-aided hydrochar possessed higher density of carbonaceous microspheres and richer hydroxyl. This char was simultaneously covered by more esters or lactones with more aromatic oxygen-containing groups inside. Similar to hemicellulose, cellulose improved the formation of diverse oxygenous groups but reduced the size of microspheres on hydrochar.
为了实现生物质的高效水热转化，本研究旨在探讨典型生物废弃物——橙皮（OraPeel）的复杂化学成分与其衍生水热炭的物理化学结构之间的相关性。通过调节生物废弃物中各组分的比例，可以将水热炭的性质调整为特定应用（如吸附剂、燃料）所需的性质。在这项工作中，纤维素、半纤维素和木质素被用作原料组成的控制变量。水热处理后，添加木质素的原料生成了更多的水热炭，其表面更粗糙，BET 面积几乎增加了一倍，苯环数量也更多。半纤维素辅助的水热炭具有更高密度的碳质微球和更丰富的羟基。这种炭同时覆盖着更多的酯或内酯，内部含有更多的芳族含氧基团。与半纤维素类似，纤维素促进了含氧基团的多样化形成，但减小了水热炭上微球的尺寸。
