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Sustainable biodiesel production from microalgae Graesiella emersonii through valorization of garden wastes-based vermicompost.

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Title Sustainable biodiesel production from microalgae Graesiella emersonii through valorization of garden wastes-based vermicompost.
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Creator Kumar SV, Das Sarkar S, Das BK, Sarkar DJ, Gogoi P, Maurye P, Mitra T, Talukder AK, Ganguly S, Nag SK, Munilkumar S and Samanta S
 
Subject Graesiella sp.Vermicompost extractCulture mediaBiodieselMicroalgaeWaste management
 
Description Not Available
Biodiesel production from microalgae has gained significant interest recently due to the growing energy demand and non-renewable nature of petroleum. However, high cost of production and environmental health related issues like excess use of inorganic fertilizers, eutrophication are the major constraints in commercial-scale biodiesel production. Besides this, solid wastes (garden-based) management is also a global concern. In the present study, to overcome these limitations vermicompost extract was tested as nutrient source to enhance growth performance and lipid production from a freshwater microalga (Graesiella emersonii MN877773). Garden wastes were first converted into vermicompost manure and its extract (aerobic and anaerobically digested) was prepared. The efficacy of the extract was then tested in combination with BG11 medium. The mixotrophic cultivation of microalgae in anaerobically digested vermicompost extract at 50:50 combination with BG11 medium enhanced the cell biomass (0.64 g d. wt. L−1) and lipid productivity (3.18 mg L−1 day−1) of microalgae by two times. Moreover, the combination also improved the saturated (methyl palmitate) and monounsaturated fatty acids (oleic acid) content in the test algae. The quality of biodiesel also complies with all the properties of biodiesel standard provided by India, the USA, and Europe except the cold filter plugging property. The combination was also found to improve the cell biomass (0.041 g L−1) as compared to BG11 medium in mass-scale cultivation. Hence, the study proved that G. emersonii grown in media supplemented with garden waste-based vermicompost extract had significant potential for mass-scale biodiesel and bioproduct production.
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Date 2022-06-24T07:01:45Z
2022-06-24T07:01:45Z
2021-01-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/73383
 
Language English
 
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Publisher Not Available