Regulatory function of organic carbon supplementation on biodiesel production during growth and nutrient stress phases of mixotrophic microalgae cultivation.
Critical role of organic carbon supplementation on the lipid synthesis during growth and nutrient deprived stress phase was investigated in present study. Mixotrophic cultivation showed relatively higher biomass productivity at lower carbon loading condition (500mgCOD/l). Nutrient deprivation induced physiological stress and glucose supplementation with 2000mgCOD/l supported higher lipid accumulation (26%). Glucose supplementation in mixotrophic growth phase showed distinct influence on biomass growth whereas glucose supplementation in nutrient starvation resulted in higher lipid storage. Compositional variation in FAME profile was observed with respect to saturated fatty acids when operated with increasing glucose concentrations. Mixotrophic mode of cultivation showed remarkable benefits of nutrient removal and organic carbon supplementation influenced greatly on biodiesel production which can be easily scaled up to pilot plant and large scale production facilities.
Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
Rashmi
R
Chandra
Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
M V
MV
Rohit
Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
Y V
YV
Swamy
Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India. Electronic address: vmohan_s@yahoo.com.
S
S
Venkata Mohan
D056804:Biofuels; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D050260:Carbohydrate Metabolism / Q000187:drug effects; D002244:Carbon / Q000494:pharmacology*; D002452:Cell Count; D018929:Cell Culture Techniques / Q000379:methods*; D002734:Chlorophyll / Q000378:metabolism; D005227:Fatty Acids / Q000378:metabolism; D005232:Fatty Acids, Volatile / Q000032:analysis; D005947:Glucose / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D058086:Microalgae / Q000187:drug effects / Q000254:growth & development* / Q000378:metabolism; D009584:Nitrogen / Q000494:pharmacology*; D009930:Organic Chemicals / Q000494:pharmacology*; D010758:Phosphorus / Q000494:pharmacology*; D013312:Stress, Physiological / Q000187:drug effects*; D062065:Wastewater / Q000737:chemistry; D018508:Water Purification
D056804:Biofuels; D002244:Carbon; D002734:Chlorophyll; D005227:Fatty Acids; D005232:Fatty Acids, Volatile; D005947:Glucose; D009584:Nitrogen; D009930:Organic Chemicals; D010758:Phosphorus; D062065:Wastewater
Lipids; Microalgae; Mixotrophic; Saturated fatty acids; Wastewater treatment