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Biomass Chemical Engineering ›› 2021, Vol. 55 ›› Issue (5): 47-52.doi: 10.3969/j.issn.1673-5854.2021.05.008

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Preparation and Performance Evaluation of Microalgae Biodiesel

Guojun YANG1(), Jianli ZENG2   

  1. 1. Development and Planning Department of Sinopec, Beijing 100728, China
    2. Sinopec Research Institute of Petroleum Processing, Beijing 100083, China
  • Received:2020-09-17 Online:2021-09-30 Published:2021-09-13


Microalgae biodiesel was prepared by SRCA process using microalgae crude oil as raw material. The results showed that the density, kinematic viscosity, flash point, sulfur content, sulfate ash, moisture content, mechanical impurities, copper corrosion, cetane number, acid value, free glycerol content and total glycerin of microalgae biodiesel met the requirements of GB/T 20828-2007. There was also a certain gap between the requirements of national standard for blending biodiesel BD100 and the prepared microalgae biodiesel. For example, the carbon residue of 10% bottom(4.03%), oxidation stability(0.85 h, 110℃) and 90% recovery temperature were far from the requirements of national standard, and the cold filter point(34℃) also did not meet the actual use requirements. The cold filter point of the product could be reduced by crystallization filtration or distillation fraction; 90% recovery temperature up to the standard could be obtained by cutting the fraction (the fraction below 180℃); the oxidation stability could be up to the standard (9.5 h) by adding 2 000 μg/g antioxidant, which could meet the requirement of national standard.

Key words: microalgae biodiesel, cold filter point, 90% recovery temperature, oxidation stability

CLC Number: