关键词: 再生能源, 发酵, 生物燃料, 补料技术, 调控策略

Abstract: As a renewable and clean energy，development and utilization of fuel ethanol has attracted much attention，and consequently there is increasingly in-depth research of the fermentation processes. In recent years，various approaches of fed-batch fermentation have been attempted to investigate their suitability for ethanol production and eventually demonstrated their good potential with the advantages，such as decreased substrate inhibition，and alleviated effects of the toxic compounds released in the dilute-acid pretreatment of lignocellulose. However，due to the existing problems，such as complexity of ethanol fermentation process and lack of in-depth investigations into feeding control strategies，the application of this technology to large-scale production of fuel ethanol has been restricted. This paper reviews major progress of ethanol fed-batch fermentation technologies，particularly focusing on the application of fed-batch approaches to ethanol production using lignocellulose as feedstock and high concentration ethanol fermentation，as well as specific fed-batch control strategies. Finally，more efforts should be made to understand fed-batch ethanol fermentation kinetics and feeding control theory，and to develop new types of sensors and online monitoring technologies.

Key words: renewable energy, fermentation, biofuel, fed-batch technologies, feeding control strategies