Photobioreactor light transfer

Berberoglu H, Yin J, Pilon L Light transfer in bubble sparged photobioreactors for H2 production and CO2 mitigation, Int J Hydrog Energy 32(13) 2273—2285, 2007. 

Comet JF, Dussap CG, Dubertret G A structured model for simulation of cultures of the cyanobacterium Spirulina platensis in photobioreactors I. Coupling between light transfer and growth kinetics, Biotechnol Bioeng 40(7) 817-825, 1992. 

Comet JF, Dussap CG, Gros JB, Binois C, Lasseur C A simplified monodimensional approach for modeling coupling between radiant light transfer and growth kinetics in photobioreactors, Chem Eng Sci 50(9) 1489-1500, 1995. 

Kandihan R Optimization and control of light transfer in photobioreactors for biofuel production, Ph.D. thesis, Los Angeles, USA, 2014, University of Cahfomia. 

Murphy TE, Berberoglu H Effect of algae pigmentation on photobioreactor productivity and scale-up a light transfer perspective, J Quant Spectrosc Radial Transf 112(18) ... 

Grima ME, Fernandez AFG, Camacho GF, Chisti Y Photobioreactors light regime, mass transfer, and sc2lenp,J Biotechnol 70 231-247, 1999. 

The purpose of a photobioreactor is to absorb incident light in order to convert it into biomass via coupling with photosynthesis. On the one hand, efficient light absorption usually corresponds to heterogeneous radiation fields (x) within the reaction volume (see Section 3). On the other hand, the coupling law (Eq. (4)) is usually a non-linear function of (x) (the law obtained in Section 5 is non-linear, but this is also the case for most of other models reported in the literature). Therefore, the coupling between radiative transfer and photosynthesis must be formulated locally, which implies that determination of the volumetric rate < > requires... 

Thus, the construction of predictive models of photobioreactors requires careful formulation of radiative transfer within the reaction volume, in order to obtain the radiation field (cf step 1 in the earlier procedure). Such analysis is developed this chapter, starting in Section 2 with determination of the light scattering and absorption properties of photosynthetic-microorganism suspensions. Next, these properties are used in Section 3 for analysis of radiative transfer and in Section 4 for rigorous solution of the radiative transfer equation by the Monte Carlo method. Finally, the thermokinetic coupling between radiative transfer and photosynthesis is addressed in Section 5. It should be noted that Sections 2 and 4 mainly summarize works that have been already published elsewhere, whereas Sections 3 and 5 include extensive original work and results. 

In Fig. 24, the irradiance field obtained with the two-flux approximation for fi —> 00 is compared with the Monte Carlo reference solution in the case of collimated solar-light incidence. The two-flux approximation wiU be used in Section 5.6 to analyze the coupling between radiative transfer and photosynthesis thermokinetics in photobioreactors with simple geometric structure. 

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