Department of Chemistry, The University of Lahore, Lahore 53700, Pakistan.
Department of Pharmacognosy, Collage of Pharmacy, King Saud University, P.O. Box 2457, Ryiadh 11451, Saudi Arabia.
Molecules. 2022 May 18;27(10):3230. doi: 10.3390/molecules27103230.
Biodiesel is considered a sustainable alternative to petro-diesel owing to several favorable characteristics. However, higher production costs, primarily due to the use of costly edible oils as raw materials, are a chief impediment to its pecuniary feasibility. Exploring non-edible oils as raw material for biodiesel is an attractive strategy that would address the economic constraints associated with biodiesel production. This research aims to optimize the reaction conditions for the production of biodiesel through an alkali-catalyzed transesterification of seed oil. The Taguchi method was applied to optimize performance parameters such as alcohol-to-oil molar ratio, catalyst amount, and reaction time. The fatty acid content of both oil and biodiesel was determined using gas chromatography. The optimized conditions of alcohol-to-oil molar ratio (6:1), catalyst (1.5% /), and reaction time 1 h afforded biodiesel with 93.5% yield. The most considerable contribution came from the molar ratio of alcohol to oil (75.9%) followed by the amount of catalyst (20.7%). In another case, alcohol to oil molar ratio (9:1), catalyst (1.5% /) and reaction time 1.5 h afforded biodiesel 82.5% yield. The fuel properties of methyl esters produced under ideal conditions were within ASTM D6751 biodiesel specified limits. Findings of the study indicate that may be chosen as a prospective and viable option for large-scale production of biodiesel, making it a substitute for petro-diesel.
生物柴油由于具有许多优良特性，被认为是石油柴油的可持续替代品。然而，由于原料成本较高，主要是使用昂贵的食用油作为原料，这是其经济可行性的主要障碍。探索非食用油作为生物柴油的原料是一种有吸引力的策略，可以解决与生物柴油生产相关的经济限制。本研究旨在通过种子油的碱催化酯交换反应优化生物柴油生产的反应条件。采用田口法优化醇油摩尔比、催化剂用量和反应时间等性能参数。采用气相色谱法测定油和生物柴油中的脂肪酸含量。醇油摩尔比（6:1）、催化剂（1.5% /）和反应时间 1 h 的优化条件下，生物柴油的产率为 93.5%。贡献最大的是醇油摩尔比（75.9%），其次是催化剂用量（20.7%）。在另一种情况下，醇油摩尔比（9:1）、催化剂（1.5% /）和反应时间 1.5 h 下，生物柴油的产率为 82.5%。在理想条件下生产的甲酯的燃料性能在 ASTM D6751 生物柴油规定的限制范围内。研究结果表明， 可以作为大规模生产生物柴油的有前途和可行的选择，替代石油柴油。
