关键词: 微藻, 烟气, CO2固定转化, 生物技术, 膜技术

Abstract: Microalgae has the strong ability to convert CO2 into cellular lipid product，better environmental adaptability，higher photosynthetic efficiency and the higher reproduction rate. Therefore，carbon dioxide fixation by microalgae has become one of the effective solutions to greenhouse effect and energy crisis. The bottle neck of this technology lies in the low efficiency of CO2 fixation and conversion into cellular lipid product. This paper introduced the process of CO2 fixation and conversion into organic carbon components of microalgae cell. The progresses on intensified fixation and conversion of CO2 from flue gas，including the stimulated CO2 fixation and conversion into lipid，the intensified CO2 fixation by membrane technology in a photobioreactor and the coupling of various technologies. The application of biotechnology and the membrane technology in microalgae field were elaborated and discussed. This paper also discussed the integration of microalgae biotechnology，membrane technology and the coupling of other technologies，in order to investigate further improvement of the fixation and conversion of CO2 from flue gas by microalgae，showing its importance of research directions for the microalgal CO2 fixation and conversion from flue gas in the future.

Key words: microalgae, flue gas, CO2 fixation and conversion, biotechnology, membrane technology