Photobiological Hydrogen Production and Carbon Dioxide Sequestration
Photobiological hydrogen production is an alternative to thermochemical and electrolytic technologies with the advantage of carbon dioxide sequestration. However, it suffers from low solar to hydrogen energy conversion efficiency due to limited light transfer, mass transfer, and nutrient medium composition. The present study aims at addressing these limitations and can be divided in three parts: (1) experimental measurements of the radiation characteristics of hydrogen producing and carbon dioxide consuming microorganisms, (2) solar radiation transfer modeling and simulation in photobioreactors, and (3) parametric experiments of photobiological hydrogen production and carbon dioxide sequestration.
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Solar Radiation Transfer in Bubble Sparged Photobioreactors
Radiation Characteristics of Hydrogen Producing and Carbon
Radiation Characteristics of Chlamydomonas reinhardtii CC125
Growth C02 Consumption and H2 Production of Anabaena
Scaled Photobioreactor Operation and Effect of Nutrient Media
Conclusions and Recommendations
A Numerical Code for Solving the Radiative Transport Equation
B Radiation Characteristics Data of Representative Microorgan
Chlorophyll Concentration Measurement Protocol
E Codes for Calculating Scattering Phase functions
1300 Wavelength A.variabilis Aabs absorption coefficient absorption cross-section Allen-Arnon medium Anabaena angle bacteria concentration beam biomass bubbles C.reinhardtii CC125 carbon dioxide Chlamydomonas reinhardtii chlorophyll CO2 consumption cyanobacteria cyanobacteria concentration diameter Eext Eext,x electron energy conversion efficiency Equation experimental extinction coefficient fuel genetically engineered green algae H2 production rates head-space Henyey-Greenstein hydrogen production hydrogen production rates hydrogenase increase irradiance kg dry cell/m3 light to biomass light transfer liquid phase mass absorption mass extinction mass scattering maximum measured membrane Mie theory Moreover nephelometer nitrate nitrogen nitrogenase nutrient oxygen parameters photobiological hydrogen production photobioreactor photosynthetic pigments probe purple non-sulfur bacteria R.sphaeroides radiation characteristics range from 300 reaction reported respectively Rhodobacter sphaeroides sample scattering coefficients scattering cross-section scattering phase function shown in Figure single scattering albedo solar sparged specific growth rate specific H2 production spectral range Table technologies temperature tlal tlal-CW+ tlaX wild strain