Studies on Microalgae for Biodiesel production
KrishiKosh
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Title |
Studies on Microalgae for Biodiesel production
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Creator |
VarshaRani.H.
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Contributor |
Geeta.G.Shirnalli
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Subject |
Agribusiness Management
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Description |
The increase in air pollution, depletion in the fossil fuels and ever increase in their price have led to search for alternate fuels. Among the renewable sources, microalgae could be one of the best alternates. Microalgae have higher potential to produce biodiesel. Hence, the present study was conducted. Seventeen isolates of microalgae were isolated from various water samples from lakes and tested for lipid production under fluorescent microscope using Nile red stain. The reference strains used in the study were Botryococcus braunii and Neochloris oleoabundans. Among the isolates Botryococcus sp. (B6) and Scenedesmus dimorphus (SD7) showed maximum fluorescence indicating potential strains for lipid production. The highest biomass was produced by Botryococcus braunii (7.90 mg ml-1) followed by Scenedesmus dimorphus (SD7) (4.53 mg ml-1), Botryococcus sp. (B6) (3.56 mg ml-1) and Neochloris oleoabundans (3.46 mg ml-1). The lipid production was 5.33 mg ml-1, 2.53 mg ml- 1, 2.26 mg ml-1 and 1.42 mg ml-1respectively. These strains were grown in the different concentrations of Ferric ammonium citrate (FAC) and Sodium nitrate to study their effect on biomass and lipid production. Different FAC levels tested were 10.7 μM, 21.4 μM and 42.8 μM. Sodium nitrate used in the study were 8.5 mM L-1, 17 mM L-1 and 34 mM L-1. FAC level of 42.8 μM and Sodium nitrate level of 8.5 mM L-1 were optimum for biomass and lipid production. The combined effect of the FAC at 42.8 μM and Sodium nitrate at 8.5 mM L-1 showed maximum biomass and lipid production by the microalgal strains as compared to that of standard medium. From this study, B6 and SD7 isolate of microalgae were potential and can be further used for large scale production and lipid extraction for converting to biodiesel. |
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Date |
2016-11-07T19:00:25Z
2016-11-07T19:00:25Z 2010 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/84316
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Format |
application/pdf
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Publisher |
UAS, Dharwad
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