This research is on the introduction and the effect of the pre-treatment method on oil recovery from African oil bean seeds for biodiesel production. Samples were dried in the solar dryer, open sun, and the oven at 50 °C, 60 °C, and 70 °C. The solvent extraction process with hexane was used to extract oil from the product, and their saponification value, peroxide value, acid value, iodine value, specific gravity, and the color of the bio-oil were analyzed. The oil was further used in acid-catalyzed esterification and alkaline transesterification for biodiesel production, and the effects of temperature, catalyst concentration, feedstock to methanol molar ratio, and reaction time on biodiesel conversion were investigated. Solar drying of the seed yielded the highest volume of oil compared with other drying methods. Peroxide values of the oil meet the standard values from CODEX but showed an increase in rancidity in the solar-dried and open sundried products. Bio-oil produced has good lubricating properties as its iodine properties showed that it is not a drying oil. The cetane number and heating value of the biodiesel produced are within the range when compared with the ASTM standard of diesel properties. By using a feedstock to methanol molar ratio of 1:6 and a sulfuric acid concentration of 0.8%, a biodiesel conversion of 81% was obtained after 6 h of reaction at 60 °C. The biodiesel produced by this process met the American Society for Testing and Materials (ASTM) standard.

这项研究是关于预处理方法的介绍及其对从非洲油豆种子中回收油以生产生物柴油的影响。样品在日光干燥器，阳光直射和烤箱中分别于50°C，60°C和70°C干燥。用己烷进行溶剂萃取，从产物中提取油，并分析其皂化值，过氧化物值，酸值，碘值，比重和生物油的颜色。将该油进一步用于酸催化的酯化反应和碱性酯交换反应以生产生物柴油，并研究了温度，催化剂浓度，原料与甲醇的摩尔比以及反应时间对生物柴油转化率的影响。与其他干燥方法相比，种子的太阳能干燥产生的油量最大。该油的过氧化物值符合CODEX的标准值，但显示出日晒干燥和开敞的日晒干燥产品的酸败增加。产生的生物油具有良好的润滑性能，因为其碘性能表明它不是干燥油。与ASTM柴油性能标准相比，生产的生物柴油的十六烷值和热值在此范围内。通过使用原料与甲醇的摩尔比为1：6和硫酸浓度为0.8％，在60°C反应6小时后，生物柴油转化率为81％。通过该方法生产的生物柴油达到了美国材料试验学会（ASTM）的标准。产生的生物油具有良好的润滑性能，因为其碘性能表明它不是干燥油。与ASTM柴油性能标准相比，生产的生物柴油的十六烷值和热值在此范围内。通过使用原料与甲醇的摩尔比为1：6和硫酸浓度为0.8％，在60°C反应6小时后，生物柴油转化率为81％。通过该方法生产的生物柴油达到了美国材料试验学会（ASTM）的标准。产生的生物油具有良好的润滑性能，因为其碘性能表明它不是干燥油。与ASTM柴油性能标准相比，生产的生物柴油的十六烷值和热值在此范围内。通过使用原料与甲醇的摩尔比为1：6和硫酸浓度为0.8％，在60°C反应6小时后，生物柴油转化率为81％。通过这种方法生产的生物柴油符合美国材料试验学会（ASTM）的标准。在60°C下反应6小时后，生物柴油的转化率为81％。通过该方法生产的生物柴油达到了美国材料试验学会（ASTM）的标准。在60°C下反应6小时后，生物柴油的转化率为81％。通过这种方法生产的生物柴油符合美国材料试验学会（ASTM）的标准。