Wang Wenjia, Du Hongbiao, Huang Yuanyuan, Wang Shaobo, Liu Chang, Li Jie, Zhang Jinglai, Lu Shuai, Wang Huansheng, Meng Han
Department of Chemical Engineering, University of Utah Salt Lake City Utah 84112 USA.
School of Environment and Natural Resources, Renmin University of China Beijing 100872 China
RSC Adv. 2022 Jul 13;12(31):20379-20386. doi: 10.1039/d2ra02325c. eCollection 2022 Jul 6.
Hydrothermal co-liquefaction has the potential to improve biocrude yield. To investigate the influence of various types of biomass on co-liquefaction with municipal sewage sludge (MSS), experiments on MSS with three kinds of model feedstocks (soy oil, soy protein, and starch) were carried out. Reaction temperatures of 300, 320, and 340 °C proved to be the appropriate reaction temperatures for the highest biocrude yield for soy oil, soy protein, and starch, respectively. A synergistic effect on the biocrude yield of co-liquefaction was proved, and starch showed the highest synergistic effect with a 57.25% increase in biocrude yield, while soy oil only presented a slight synergistic effect. Thermal gravimetric analysis (TGA) results suggested that co-liquefaction with soy oil increased the light oil fractions in biocrude by 20.81%, but protein and starch led to more heavy oil fractions. Gas chromatography-mass spectrometry (GC-MS) indicated that co-liquefaction with protein or starch produced more cyclic compounds in the biocrude, while almost no new components appeared from co-liquefaction with soy oil.
水热共液化具有提高生物原油产量的潜力。为了研究各类生物质对与城市污水污泥（MSS）共液化的影响，开展了MSS与三种模型原料（豆油、大豆蛋白和淀粉）的实验。结果表明，300、320和340℃的反应温度分别是获得豆油、大豆蛋白和淀粉最高生物原油产量的适宜反应温度。共液化对生物原油产量有协同效应，淀粉的协同效应最高，生物原油产量提高了57.25%，而豆油仅呈现轻微的协同效应。热重分析（TGA）结果表明，与豆油共液化使生物原油中的轻油馏分增加了20.81%，但蛋白质和淀粉导致更多的重油馏分。气相色谱 - 质谱联用（GC-MS）表明，与蛋白质或淀粉共液化在生物原油中产生了更多的环状化合物，而与豆油共液化几乎没有出现新的成分。
