Abstract Pyrolysis of Trichosporon fermentans biomass, a type of oleaginous yeast from the fermentation of refined soybean oil wastewater, was studied in the present work. Based on the TG/DTG curves, the activation energy values for the thermal decomposition of Trichosporon fermentans biomass were evaluated by the KAS method (111.69 kJ/mol) and FWO method (116.93 kJ/mol), respectively. The pyrolysis behavior was represented by considering the parallel degradation of four components, namely carbohydrates, proteins, lipids, and others, and the fitting degree of the simulated curve was over 0.99. According to the FTIR spectra of the end-products, the increasing hydrocarbons at a temperature around 400 °C indicated the lipid degradation. Biocrude oil was collected from a fixed bed reactor and the chemical composition was characterized by GC-TOF/MS. The yield of hydrocarbons in the bio-oil was identified as being over 28% when the pyrolysis temperature was higher than 500 °C, whilst the content of nitrogen compounds was less than 18%. The fractional yield distributions of the end-products at different pyrolysis temperatures were compared and the maximum yield of bio-oil was achieved (around 42%) at 500 °C. This study proposed a cost-effective and environmentally friendly method for the preparation of biofuel from oleaginous yeast pyrolysis.

中文翻译：

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来自废水处理的含油酵母生物质的热解：动力学分析和生物原油表征

摘要 本文研究了发酵精制豆油废水发酵产生的一种产油酵母——发酵毛孢子菌生物质的热解。基于TG/DTG曲线，分别通过KAS法(111.69 kJ/mol)和FWO法(116.93 kJ/mol)评价发酵毛孢菌生物质热分解的活化能值。热解行为通过考虑碳水化合物、蛋白质、脂质等四种组分的平行降解来表征，模拟曲线拟合度大于0.99。根据终产物的 FTIR 光谱，在 400 °C 左右的温度下烃的增加表明脂质降解。从固定床反应器中收集生物原油，并通过 GC-TOF/MS 表征其化学成分。当热解温度高于500°C时，生物油中烃类的产率超过28%，而氮化合物的含量低于18%。比较了不同热解温度下终产物的产率分布，在 500 °C 时达到了生物油的最大产率（约 42%）。本研究提出了一种从含油酵母热解制备生物燃料的经济高效且环境友好的方法。比较了不同热解温度下终产物的产率分布，在 500 °C 时达到了生物油的最大产率（约 42%）。本研究提出了一种从含油酵母热解制备生物燃料的经济高效且环境友好的方法。比较了不同热解温度下终产物的产率分布，在 500 °C 时达到了生物油的最大产率（约 42%）。本研究提出了一种从含油酵母热解制备生物燃料的经济高效且环境友好的方法。