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Effect of carbon supply mode on biomass and lipid in CSMCRI's Chlorella variabilis (ATCC 12198)

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Title Effect of carbon supply mode on biomass and lipid in CSMCRI's
Chlorella variabilis (ATCC 12198)
 
Creator Patidar, Shailesh Kumar
Mitra, Madhusree
Goel, Sangita
Mishra, Sandhya
 
Subject Energy Sources
 
Description CSIR-CSMCRI's Chlorella variabilis (ATCC 12198) was evaluated through autotrophic, mixotrophic and
heterotrophic growth for lipid production. Autotrophic growth was assessed by providing sodium bicarbonate/
sodium carbonate/CO2 (air in a medium). Higher lipid productivity (115.94 mg L�1 d�1) with
higher biomass productivity (724.98 mg L�1 d�1) of this strain was attained through bicarbonate and CO2
sequestration in a photobioreactor. Ability to regulate the pH in favorable bicarbonate/carbonate ratio
showed its potential in alkaline effluent based carbon sequestration system for biofuel generation. The
simultaneous study was also conducted to understand the effect of elevated CO2 (0.4, 1 and 1.2 g L�1) in
air on the culture to assess adaptation, growth and lipid in the closed chamber conditions. It was
observed that CO2 sequestration by the microalgae from the CO2 enriched environment was optimum at
1 g L�1 C. variabilis adapted to comparatively higher CO2 (1 g L�1) but grew better in low CO2 (0.4 g L�1). It
was also observed that the growth, lipid content and fatty acid composition was significantly affected by
CO2 supply strategies. The effect of intermittently added sodium bicarbonate at different pH on microalgal
lipid content and composition of fatty acids was observed which could affect the quality of biodiesel.
The effect on fatty acid composition was observed in response to carbon supply mode during the
microalgal growth at different pH dictating the properties of biodiesel.
 
Publisher Elsevier
 
Date 2016-03
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/849/1/2016-Effect-of-carbon-supply-1-s2%200-S0961953416300010-main.pdf
Patidar, Shailesh Kumar and Mitra, Madhusree and Goel, Sangita and Mishra, Sandhya (2016) Effect of carbon supply mode on biomass and lipid in CSMCRI's Chlorella variabilis (ATCC 12198). Biomass and Bioenergy, 86. pp. 1-10. ISSN 0961-9534
 
Relation http://www.elsevier.com/locate/biombioe
http://neeri.csircentral.net/849/