微藻油脂形成的影响因素及破壁提取技术.pdf

Electrical Engineering and Automation December 2013, Volume 2, Issue 4, PP.57-68 The Effect Factors of Microalgae Oil Formation and Pre-broken Extraction Technology 1 1 1 1,2# Ya Li , Xin Wang , Bingwei Zhao , Xiaoyi Yang 1. School of Energy and Power Engineering, Beihang University, Beijing, P.R. China, 100191 2. Energy and Environment International Centre, Beihang University, Beijing, P.R. China, 100191 #Email: yangxiaoyi@ Abstract Excessive use of fossil fuels has been to detriment of environmental, and now fossil fuels face the threat of depletion. Algae has received much more attention as the most potential feedstock for renewable biofuel. Microalgae lipid is the main substance to produce biofuel influenced by many factors including medium composition, temperature, and light, pH value, training methods and salinity, which is the focus of this paper. Oil extraction has been a key technology of bio-energy industry. Since microalgae cells are usually characterized by relatively thick cell wall, which poses much difficulty in extracting oil. Broken pretreatment is needed before oil extraction in order to achieve high extraction efficiency. Different broken pretreatment and oil extraction methods will cause large differences in extraction efficiency. This paper summarized the most commonly used broken pretreatments, extraction techniques and oil extraction efficiency, and then analyzed the development of new technologies, such as subcritical solvent extraction technology, ionic liquids extraction technology and electromagnetic pulse extraction technology; as well as their advantages and disadvantages; further the problems that constrain microalgae industrial produc