Health & Environmental Research Online (HERO)


Print Feedback Export to File
1037855 
Journal Article 
Biodiesel production from algae oil high in free fatty acids by two-step catalytic conversion 
Chen, L; Liu, T; Zhang, W; Chen, X; Wang, J 
2012 
Yes 
Bioresource Technology
ISSN: 0960-8524
EISSN: 1873-2976 
111 
208-214 
English 
22401712 
The effect of storage temperature and time on lipid composition of Scenedesmus sp. was studied. When stored at 4°C or higher, the free fatty acid content in the wet biomass increased from a trace to 62.0% by day 4. Using two-step catalytic conversion, algae oil with a high free fatty acid content was converted to biodiesel by pre-esterification and transesterification. The conversion rate of triacylglycerols reached 100% under the methanol to oil molar ratio of 12:1 during catalysis with 2% potassium hydroxide at 65°C for 30min. This process was scaled up to produce biodiesel from Scenedesmus sp. and Nannochloropsis sp. oil. The crude biodiesel was purified using bleaching earth. Except for moisture content, the biodiesel conformed to Chinese National Standards. 
Wet algae biomass; Biodiesel; Free fatty acid; Storage; Conversion 
IRIS
• Methanol (Non-Cancer)
     Search 2012
          WOS
          ProQuest
     Search Jan 30 2013
          WOS