Bioenergy from Algae: Growth and fatty oils production from Chlorella pyrendoisa and Anabaena sp.
Monika Prakash Rai, Nikunj Sharma
The objective of this study was to analyze the use of two microalgae species as a potential feedstock for bio-diesel production. Fresh water, fast growing, green microalgae Chlorella pyrenoidosa and Anabaena sp. were selected for the study. Two suitable growth media; Fogg’s and BG-11 were chosen for the cultivation of microalgae. Chlorella pyrenoidosa showed better growth in presence of Fogg`s medium and biomass production was achieved 0.3 g L-1 in 10 days. Maximum growth of Anabaena sp is observed in BG-11 medium and biomass yield is obtained 0.3028 g L-1 in 10 days. Biochemical estimation was performed in both the species for analyzing the protein, carbohydrate, lipid and chlorophyll content for their application. Chlorella pyrendoisa possess 38.46 % protein, 40.06 % carbohydrate, 5.65 % lipid and 11.17 % chlorophyll whereas Anabaena sp. showed presence of 41.51 % protein, 35.58 % carbohydrate, 12.58 % lipid and 7.63 % chlorophyll. 16.3 mg of lipid is extracted from 300 mg of dry Chlorella pyrenoidosa cells and converted to fatty acid methyl esters (FAME) by the method of acid based transesterification to yield 4.4 mg FAME. 13.5 mg of FAME was obtained from lipid extracted in Anabaena sp. Renewable energy has become one of the most important issue and increase in usage of fossil fuels will create instability in environment, economy and industry. One can indeed see the potential offered by algae as biofuel in terms of energy balance and carbon sequestration. To provide a clear picture regarding the use of use of algae as biodiesel or bio-ethanol at commercial use, R&D centres have to invest and give more focus to this area at large scale and to look for the ideal species.
Monika Prakash Rai, Nikunj Sharma. Bioenergy from Algae: Growth and fatty oils production from Chlorella pyrendoisa and Anabaena sp.. International Journal of Multidisciplinary Research and Development, Volume 1, Issue 5, 2014, Pages 181-184