School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China.
School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China.
J Biotechnol. 2023 Mar 20;366:65-71. doi: 10.1016/j.jbiotec.2023.03.001. Epub 2023 Mar 11.
Crude glycerol, a byproduct of biodiesel production, was utilized as a carbon source to produce microbial lipids by the oleaginous yeast Rhodotorula toruloides in this study. The maximum lipid production and lipid content were 10.56 g/L and 49.52%, respectively, by optimizing fermentation conditions. The obtained biodiesel met the standards of China, the United States, and the European Union. The economic value of biodiesel produced from crude glycerol increased by 48% compared with the sale of crude glycerol. In addition, biodiesel production from crude glycerol could reduce 11,928 tons of carbon dioxide emissions and 55 tons of sulfur dioxide emissions. This study provides a strategy for a closed loop of crude glycerol to biofuel and ensures sustainable and stable development of the biodiesel industries.
本研究利用生物柴油生产的副产物粗甘油作为碳源，通过产油酵母圆红冬孢酵母（Rhodotorula toruloides）生产微生物油脂。通过优化发酵条件，最大生物柴油产量和生物柴油得率分别达到 10.56 g/L 和 49.52%。所得到的生物柴油符合中国、美国和欧盟的标准。与粗甘油销售相比，粗甘油生产生物柴油的经济价值提高了 48%。此外，粗甘油生产生物柴油可以减少 11928 吨二氧化碳排放和 55 吨二氧化硫排放。本研究为粗甘油到生物燃料的闭环提供了一种策略，确保了生物柴油产业的可持续和稳定发展。
