Norouzmehr Parviz, Rabbani Ahmad Reza, Zolfagharpour Hamid Reza
Department of Petroleum Engineering, Amirkabir University of technology, Tehran, Iran.
Farayand Sabz Pakan Co., No. 350, Hafez Ave, Valiasr Square, Tehran, 1591634311, Iran.
Sci Rep. 2025 Mar 29;15(1):10903. doi: 10.1038/s41598-025-95847-5.
Biomass, as a renewable resource, offers a potential alternative to fossil fuels. Catalytic pyrolysis, a process that converts biomass into bio-oil, is a promising method for sustainable energy production. This study aimed to quantify the concentrations of 16 priority polycyclic aromatic hydrocarbons (PAHs) in bio-oil produced from metal oxide catalytic pyrolysis of sugarcane bagasse. Using a large-scale auger reactor, bagasse was pyrolyzed at temperatures ranging from 400 to 600 °C with various amounts of vanadium pentoxide (VO) catalyst (0-30% w/w). The resulting bio-oil was analyzed using gas chromatography/mass spectrometry (GC/MS) to identify and quantify PAHs. Significant levels of PAHs (2206-6498 mg/L) were detected in the bio-oil. Low molecular weight PAHs, such as naphthalene, acenaphthylene, acenaphthene, fluorene, and phenanthrene, were predominant in all samples. The minimum total PAHs concentration (2206 mg/L) was observed at 400 °C with a 20% VO catalyst loading. These findings suggest that metal oxide catalytic pyrolysis of bagasse, particularly with VO, can effectively control and reduce the formation of PAHs. Further research is needed to optimize the process and minimize PAHs production to commercialize bio-oil as a sustainable fuel.
生物质作为一种可再生资源，为化石燃料提供了一种潜在的替代方案。催化热解是一种将生物质转化为生物油的过程，是可持续能源生产的一种有前景的方法。本研究旨在量化甘蔗渣金属氧化物催化热解产生的生物油中16种优先多环芳烃（PAHs）的浓度。使用大型螺旋进料反应器，在400至600°C的温度下，用不同量的五氧化二钒（VO）催化剂（0-30% w/w）对甘蔗渣进行热解。使用气相色谱/质谱联用仪（GC/MS）对所得生物油进行分析，以鉴定和量化多环芳烃。在生物油中检测到显著水平的多环芳烃（2206-6498 mg/L）。低分子量多环芳烃，如萘、苊烯、苊、芴和菲，在所有样品中占主导地位。在400°C、VO催化剂负载量为20%时，观察到最低的多环芳烃总浓度（2206 mg/L）。这些发现表明，甘蔗渣的金属氧化物催化热解，特别是使用VO，可以有效地控制和减少多环芳烃的形成。需要进一步研究以优化该过程并将多环芳烃的产生降至最低，从而使生物油作为可持续燃料实现商业化。
