Study on Suitable Light Conditions and Efficient Lipid Extraction Technologies for Biodiesel Production Based on Microalgae

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Wang, Yao^1 ; Zhang, Qingtao^1,2 ; Sun, Yuan^3 ; Yang, Chengjia^3

Department of Water Resources and Environment, School of Geography and Planning, Sun Yat-Sen University, Guangzhou

510275, China^1

Key Laboratory of Water Cycle and Water Security, Southern China of Guangdong High Education Institute, Sun Yat-Sen University, Guangzhou

510275, China^2

Shenzhen Engineering Laboratory for Algal Biofuel Technology Development and Application, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen

518055, China^3

关键词: Biodiesel production;    Biomass accumulation;    Chlorella sorokiniana;    Efficient technology;    Illumination intensity;    Light conditions;    Lipid extraction;    Microwave conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012114/pdf
DOI  :  10.1088/1757-899X/301/1/012114

来源: IOP

【 摘 要 】

As a new generation biodiesel feedstock, microalgae have most potential to replace fossil fuel. However, the limited scale and high cost are two bottleneck problems. Efficient microwave-assisted lipid extraction technologies and suitable light conditions for Chlorella Sorokiniana need further study for lowering the cost. In this study, three photoperiod groups(24L:0D, 12L:12D, 0L:24D), three illumination intensity groups (1800 lux, 3600 lux, 5400 lux)and four light spectrum groups (Red, green, blue, and white) were used to culture Chlorella Sorokiniana to investigate those effects on algae growth rate and biomass accumulation. The suitable microwave treatment was also studied to achieve an optimizing quantum fracturing technology. 400 w, 750 w and 1000 w microwave power were set and 60 °C, 75 °C, 90 °C microwave conditions were investigated. The results showed that Chlorella Sorokiniana under 24L:0D photoperiod with 5400 lux white light can achieve better growth rate. The 90 °C / 1000w microwave treatment was identified as the most simple, easy, and effective way for lipid extraction from Chlorella Sorokiniana. As the raw material of biodiesel production, C18:1, C18:2 and C18:3 have accounted for important components of fatty acid in Chlorella Sorokiniana. Therefore, Chlorella Sorokiniana is a good raw material for the production of good quality biodiesel under suitable and efficient technologies.