PDF(Pubmed)
Abstract：
The study investigates the effect of ethanol and Moringa antioxidant on the performance and emission characteristics of a Soybean biodiesel blend (B15, B20, and B25) using a direct injection, four-stroke, naturally aspirated, water-cooled single-cylinder diesel engine equipped with SCADA software. The effect of reaction parameters on FAEE yield such as, time, catalyst concentration, molar ratio of alcohol to oil, and blending quality, was optimized using the one factor at a time experimental technique. The maximum yield of 97.8% biodiesel was produced at the ideal catalyst concentration, blending quality, alcohol to oil molar ratio, and time of 1 h, are 1%, 12:1, and 500 rpm, respectively. The Rancimat method was used to assess the oxidative stability of pure biodiesel after the natural antioxidant (extracted from Moringa leaf) was added at concentrations of 1500, 2500, 3500, and 4500 ppm. The addition of antioxidants to biodiesel significantly increased its induction time from 4.52 to 19.98 h. Brake-thermal efficiency increased by 4.4% whereas brake-specific fuel consumptions decreased by 4.6% for B15E2M (15% SB+2E + M) when compared to B15. Emission characteristics of B25E2M showed higher reduction of CO, HC and NOx by 20.27%, 8% and 7% as compared to the B25 respectively. The physicochemical qualities, performance, and emission characteristics of B15 blends with additive are generally comparable to those of diesel fuel. In conclusion, both additives significantly improved the combustion performance of soybean biodiesel blend.
摘要：
该研究调查了乙醇和辣木抗氧化剂对使用直接注射的大豆生物柴油混合物（B15，B20和B25）的性能和排放特性的影响，四冲程，自然吸气,水冷单缸柴油机配备SCADA软件。反应参数对FAEE产率的影响，例如，时间,催化剂浓度,醇与油的摩尔比，和混合质量，使用一次一个因素的实验技术进行了优化。在理想的催化剂浓度下生产了97.8%的生物柴油,混合质量，醇与油的摩尔比，时间为1小时，是1%,12:1和500rpm，分别。在以1500、2500、3500和4500ppm的浓度添加天然抗氧化剂（从辣木叶中提取）后，使用Rancimat方法来评估纯生物柴油的氧化稳定性。在生物柴油中添加抗氧化剂可显着将其诱导时间从4.52增加到19.98h。与B15相比，B15E2M（15％SB2EM）的制动热效率增加了4.4％，而制动比燃料消耗减少了4.6％。B25E2M的排放特征显示出更高的CO还原性，HC和NOx减少20.27%，与B25相比分别为8%和7%。物理化学质量，性能，含添加剂的B15混合物的排放特性通常与柴油相当。总之,两种添加剂均显著提高了大豆生物柴油混合物的燃烧性能。
