Biobutanol, a promising green alternative fuel, fermented from , while its high-cost and limited yield constraining its development. ABE (acetone-butanol-ethanol) and IBE (isopropanol-butanol-ethanol) are mixed fermentation products from non-edible biomass raw materials, using them together with water as alternative fuels will reduce industrial production costs and save fossil fuels. Therefore, this study conducted a multifaceted experimental evaluation on ABE/IBE mixed fuels with different water content, demonstrating that it has good water holding capacity when mixed with traditional fossil fuels. Taking ABE (3: 6: 1) as an example, its water holding capacity after mixing with diesel at 10–90 % is 0.37–7.83 % at 20 °C. Meanwhile, the particle size of ABE/IBE mixed fuels is about 2–30 nm, exhibiting a microemulsion with thermodynamic stability. The anhydrous or water-containing mixed fuel with the ratio of ABE (IBE) of 10%–50 % meets the range of the density and kinematic viscosity of diesel engine fuel. The mixed fuel is non-corrosive to copper without water, and a water content of about 3 % or higher will increase the risk of engine corrosion at 20 °C. Despite the addition of biofuel and water, studies on energy combustion performance and pollutant emission performance have found that appropriate addition of biofuel and water can produce higher power output and lower pollutant emissions than traditional fossil fuels, with ABE20W0.5 being the optimal. This study demonstrates the great potential of ABE and IBE as biofuels to achieve carbon neutrality goals, providing novel research direction for green alternative fuels in the future.

中文翻译：

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丙酮丁醇梭菌发酵产物含水生物燃料的燃料特性及应用前景


生物丁醇是一种很有前景的绿色替代燃料，由发酵而成，但其成本高、产量有限限制了其发展。 ABE（丙酮-丁醇-乙醇）和IBE（异丙醇-丁醇-乙醇）是非食用生物质原料的混合发酵产物，与水一起用作替代燃料将降低工业生产成本并节省化石燃料。因此，本研究对不同含水量的ABE/IBE混合燃料进行了多方面的实验评价，证明其与传统化石燃料混合时具有良好的持水能力。以ABE（3:6:1）为例，20℃时与柴油混合10%~90%后持水率为0.37%~7.83%。同时，ABE/IBE混合燃料的粒径约为2-30 nm，表现出具有热力学稳定性的微乳液。 ABE（IBE）比例为10%~50%的无水或含水混合燃料满足柴油机燃料的密度和运动粘度范围。混合燃料在不含水的情况下对铜无腐蚀，约3%或更高的含水量会增加20℃时发动机腐蚀的风险。尽管添加了生物燃料和水，但对能量燃烧性能和污染物排放性能的研究发现，适当添加生物燃料和水可以比传统化石燃料产生更高的功率输出和更低的污染物排放，其中ABE20W0.5为最优。该研究展示了ABE和IBE作为生物燃料实现碳中和目标的巨大潜力，为未来绿色替代燃料提供了新的研究方向。