Abstract Coffee is an important agricultural product being one of the most consumed beverages in the world. The goal of this work is to apply the pyrolysis to this residue for the production of bio-oil. The pyrolysis of the biomass (SCG) was done in a fixed bed reactor and varying the final temperature (400, 450, 500, 550 and 600 °C). The higher crude bio-oil yield was obtained at 500 °C with a flow of N 2 in 100 mL/min (mass yield = 30.51%). The bio-oil produced by pyrolysis of SCG had its chemical composition analyzed by comprehensive two-dimensional gas chromatography coupled to mass spectrometry detector (GC × GC/TOF-MS) and associated with LTPRI. This bio-oil showed potential for the production of chemical and liquid fuels, evidencing to be a good option for the destination of this waste. Its composition showed high amount of phenols, fatty acids and nitrogen compounds. The major compounds in the bio-oil sample were n-hexadecanoic acid (palmitic acid) (19%), 9-octadecenoic acid (oleic acid) (11%), octadecanoic acid (stearic acid) (10%).

中文翻译：

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温度对废咖啡渣热解产生的生物油的产量和组成的影响：综合二维气相色谱表征

摘要 咖啡是一种重要的农产品，是世界上消费量最大的饮料之一。这项工作的目标是将热解应用于该残留物以生产生物油。生物质 (SCG) 的热解在固定床反应器中进行，并改变最终温度（400、450、500、550 和 600 °C）。在 500 °C 和 100 mL/min 的 N 2 流量下获得更高的粗生物油产量（质量产率 = 30.51%）。SCG 热解产生的生物油的化学成分通过二维气相色谱联用质谱检测器 (GC × GC/TOF-MS) 并与 LTPRI 相关联进行分析。这种生物油显示出生产化学和液体燃料的潜力，证明是这种废物目的地的不错选择。其成分显示出大量的酚类，脂肪酸和氮化合物。生物油样品中的主要化合物是正十六烷酸（棕榈酸）（19%）、9-十八碳烯酸（油酸）（11%）、十八烷酸（硬脂酸）（10%）。