EBTL-Jeon You Chul - PowerPoint PPT Presentation

Title: EBTL-Jeon You Chul


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EBTL-Jeon You Chul
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Global Warming Problems
Global warming is caused by the continuous
development under regardless of environment
Result from accumulation of Green House Gases
(CO2, CH4, CFCs, water vapor, etc.) in the
atmosphere Result in temperature
increase abnormal climate rise of sea water level
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Biological CO2 Fixation (BCF)using
photosynthetic organisms

• Direct Fixation
• Target flue gas
• Biomass reuse solid/liquid fuels, biosorbents,
  etc.
• Indirect Fixation
• Target captured CO2
• Biomass reuse health foods, animal feeds,
  composts, pharmaceuticals, etc.

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Applications of Photosynthetic Microorganisms

• Production of health food (eq, chlorella)
• Production of fine chemicals (eq, astaxanthin,
  ß-carotein, etc)
• Biological CO2 fixation
• Wastewater treatment
• Heavymetal biosorption

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INTRODUCTION
Astaxanthin Green Vegetative cells ? Red cyst
cells under unfavorable environmental conditions
nitrogen limitation, strong light intensity,
high temperature, pH, salinity, or phosphate
deficiency
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Astaxanthin

• Ketocarotenoid (3,3-dihydroxy-?-?-carotene-4-4-
  dione)

• Types of currently available astaxanthin
• Synthetic forms(gt95)
• Natural forms
• Krill and craw fish oils ( 0.15 )
• Phaffia yeast ( 0.40 )
• Haematococcus species (1.5-4.0 )

• Features
• Superior antioxidant effects to ?-carotene,
  zeaxanthin, and vitamin E
• High price (2,500 US/kg)

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Can Mixotrophic Culture Fix CO2?
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Finding Optimal Conditions (Light Intensity
Acetate Concentration)
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Research Area
Photobioreactions Photobioreactors
Laboratory
Industry
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Research Area
Photobioreactions Photobioreactors
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• Modeling and kinetic analysis of microalgal
  photosynthesis and growth
• Biological carbon dioxide fixation using
  photosynthetic microorganisms
• Biological production of hydrogen gas using solar
  energy
• Microalgal production of high-value-added fine
  chemicals
• Photosynthesis measurement systems and its
  applications
• Reuse of algal biomass as a biosorbent
• Design and optimization of novel photobioreactor
  systems

EBTL
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Research Area
Photobioreactions Photobioreactors
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• Kinetic modeling of light-dependent
  photosynthetic activity of green microalga,
• Chlorella vulgaris, BB, accepted (2002).
• Evaluation of methods promoting the astaxanthin
  production by the unicellular green alga,
• Haematococcus pluvialis, with fractional
  factorial design, Biotechnol. Prog., 18, 1170
  (2002).
• Attenuation of monochromatic and polychromatic
  lights in Chlorella vulgaris suspensions,
• AMB, 55, 765 (2001).
• Carbon dioxide fixation by algal cultivation
  using wastewater nutrients, JCTB, 69, 451 (1997).
• Enhancement of CO2 tolerance of Chlorella
  vulgaris by gradual increase of CO2
  concentration,
• BT, 10, 713 (1996).

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Thank you for your attention !