Analysis of Marine Microalgae Strain- Nannochloropsis.salina for Biofuels Production
I came across a project at the Algae Fuels Community @ CleanTick and thought I could share this with you as well.
Provided below are some highlights on the properties of the marine algae strain-Nannochloropsis salina which I gathered after going through the details shared by one of the members in the algae fuels community
Growth rate of Nanochlropsis Salina – Under optimum laboratory conditions, the max. growth rate was 0.030/h which correspond to a doubling time of 23h. The max. lipid production rate was 4g/m2/day.
Max. and min. oil yield – On an average, this species contain 20-40% oil (of dry weight)
Max. Productivity – The max. rate observed was 24.5g/m2/day under optimal lab conditions.
Methods for increasing productivity – A prerequisite for obtaining optimal productivity in outdoor cultures is providing nutrients in sufficient quantities and culture growth being affected by temperature and light alone. The cell concentration should be less.
Other important factors for achieving optimal productivity were—-temperature-280C, pH-7.5-8.0, NaCl (0.6M), KNO3(10mM) in 100ml flask. pH should be maintained below 11 for optimal productivity
Toleration of environmental alterations like pH, temp, salinity fluctuations – The range of conditions in which Nannochloropsis salina can grow is following:
Temperature—-17-32C
pH—-5-10.5
NaCl—-0.1-1M
KNO3—-3-100mM
NaHCO3—-0-5mM
Photosynthetic efficiency – The photosynthetic efficiency varies from 2.1% to 4.3% depending on whether it is summer or winter and cell concentration. The photosynthetic efficiency decreases with increasing cell concentrations and on an average is more in summer.( Boussiba et al,1987)
Carbon-capture capacity – The CO2 capturing capacity in the semi-continous cultures aerated with 2%, 5%, 10% & 15% CO2 was 47%, 20%, 15% &11%.
Chances of contamination – Major contaminants are other strains and zooplankton, mainly diatoms and predators in open pond cultures.
Detailed Analysis from here – http://www.cleantick.com/users/amandaleah/projects/analysis-of-marine-algae-strains-for-biofuel-production-nannochloropsis-salina/updates/10
August 3rd, 2013 at 6:48 am
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