El-Sheekh Mostafa M, El-Nagar Aya A, ElKelawy Medhat, Bastawissi Hagar Alm-Eldin
Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
Microbial Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, Sadat City University, El Sadat City, Egypt.
Biotechnol Biofuels Bioprod. 2023 Feb 1;16(1):15. doi: 10.1186/s13068-023-02264-9.
The work focuses on studying the solubility and stability of dissolved bioethanol as a fuel additive in different fuel blends of gasoline, diesel, 50% diesel/50% biodiesel. Dissolved ethanol fuel appears as particles with a unique size distribution inside the whole fuel blends, and its stability was measured in this work. Bioethanol dissolved fuel particles stability was improved after blending the bioethanol with 50% diesel/50% biodiesel than pure diesel or pure gasoline fuel alone. The obtained results reveal that the lowest bioethanol particles stability was obtained when commixed with gasoline and the suspended ethanol particles completely accumulated at different concentrations of bioethanol in the fuel blends of 2%, 4%, 6%, 8%, 10%, and 12% by volume after 1 h of mixing time. Furthermore, the measured data of the bioethanol particles size distribution reveals that the suspended stability in the diesel blend improve slightly for all bioethanol concentrations of 10%, 15%, 20%, 25%, and 30% by volume. While the bioethanol concentrations of 5% show acceptable particles stability and size distribution during the whole experiments time. Obtained results show that bioethanol suspended particles stability was enhanced for 50% diesel/50% biodiesel blend with different bioethanol concentrations of 5%, 10%, 15%, 20%, 25%, and 30% by volume basis. However, the size of the particles increased as the bioethanol concentration rose with the passage of time.
这项工作的重点是研究溶解态生物乙醇作为燃料添加剂在汽油、柴油、50%柴油/50%生物柴油等不同燃料混合物中的溶解度和稳定性。溶解态乙醇燃料在整个燃料混合物中呈现出具有独特尺寸分布的颗粒，并且在本研究中对其稳定性进行了测量。与单独的纯柴油或纯汽油燃料相比，将生物乙醇与50%柴油/50%生物柴油混合后，溶解有生物乙醇的燃料颗粒的稳定性得到了提高。所得结果表明，当与汽油混合时，生物乙醇颗粒的稳定性最低，并且在混合1小时后，在体积分数为2%、4%、6%、8%、10%和12%的燃料混合物中，不同浓度的生物乙醇中的悬浮乙醇颗粒会完全聚集。此外，生物乙醇颗粒尺寸分布的测量数据表明，对于体积分数为10%、15%、20%、25%和30%的所有生物乙醇浓度，其在柴油混合物中的悬浮稳定性略有提高。而体积分数为5%的生物乙醇在整个实验过程中表现出可接受的颗粒稳定性和尺寸分布。所得结果表明，对于体积分数为5%、10%、15%、20%、25%和30%的不同生物乙醇浓度与50%柴油/50%生物柴油的混合物，生物乙醇悬浮颗粒的稳定性得到了增强。然而，随着时间的推移，颗粒尺寸随着生物乙醇浓度的升高而增大。
