Life Cycle Energy Analysis and Biodiesel Production Potential Evaluation for Immobilized Microalgae Cultivated with Secondary Effluent in China

摘要

The coupling of biodiesel production and advanced wastewater treatment with immobilized microalgae has attracted much concern in recent years. Its economic feasibility, however, remains unclear. Therefore, we performed life cycle energy analysis and biodiesel production potential evaluation for the coupling system in China. The results demonstrated that when alginate recycle rate increased to 95%, the NER value of the coupling system could drop down to less than 1, indicating economic feasibility of large application. Temperature and development level are two crucial factors for biodiesel production potential. The coupling technology therefore shows a great potential of application in China, especially in regions with suitable temperature and high development level.