TY - GEN
T1 - EFFECT OF FRACTAL-LIKE AGGREGATION ON RADIATIVE PROPERTIES AND SPECIFIC GROWTH RATE OF CHLORELLA
AU - He, Zhen Zong
AU - Qi, Hong
AU - Chen, Qin
AU - Ren, Ya Tao
AU - Ruan, Li Ming
N1 - Publisher Copyright:
© 2014, Begell House Inc.. All rights reserved.
PY - 2014
Y1 - 2014
N2 - Chlorella is an attractive potential food source, for its particular richness in protein and other essential nutrients. In this study, the Generalized Multiparticle Mie-solution (GMM) method is employed to perform extensive computations of radiative properties of fractal-like Chlorella cells aggregation in random orientation at wavelength 442 nm. The effects of fractal dimension, the prefactor, the monomer radius and the number of monomers on the radiative properties are investigated thoroughly. For comparing the radiative properties of the Chlorella clusters with those of the independent scattering monomers (ignoring the electromagnetic interaction between the monomers), the relative radiative properties are employed, and the results show that the optical cross sections and single-scattering albedo of the clusters are smaller than those of the independent scattering monomers. Moreover, if increasing the fractal dimension, the values of monomer radius and the number of monomers, the optical cross sections and single scattering albedo tend to be smaller. Based on the calculated radiative properties of Chlorella clusters, the Finite Volume Method (FVM) is applied to investigate light transfer in the photobioreactors containing Chlorella clusters and the independent scattering monomers, respectively. The results demonstrate that the light attenuates slowly in the photobioreactor which contains the clusters, compared with that includes the independent scattering monomers. Based on the Monod model, the specific growthrate in the photobioreactors is studied. The investigation reveals that the aggregation will inhibit the growth of Chlorella cells, so the Chlorella is recommended to be cultivated as dispersed as possible for larger production rate.
AB - Chlorella is an attractive potential food source, for its particular richness in protein and other essential nutrients. In this study, the Generalized Multiparticle Mie-solution (GMM) method is employed to perform extensive computations of radiative properties of fractal-like Chlorella cells aggregation in random orientation at wavelength 442 nm. The effects of fractal dimension, the prefactor, the monomer radius and the number of monomers on the radiative properties are investigated thoroughly. For comparing the radiative properties of the Chlorella clusters with those of the independent scattering monomers (ignoring the electromagnetic interaction between the monomers), the relative radiative properties are employed, and the results show that the optical cross sections and single-scattering albedo of the clusters are smaller than those of the independent scattering monomers. Moreover, if increasing the fractal dimension, the values of monomer radius and the number of monomers, the optical cross sections and single scattering albedo tend to be smaller. Based on the calculated radiative properties of Chlorella clusters, the Finite Volume Method (FVM) is applied to investigate light transfer in the photobioreactors containing Chlorella clusters and the independent scattering monomers, respectively. The results demonstrate that the light attenuates slowly in the photobioreactor which contains the clusters, compared with that includes the independent scattering monomers. Based on the Monod model, the specific growthrate in the photobioreactors is studied. The investigation reveals that the aggregation will inhibit the growth of Chlorella cells, so the Chlorella is recommended to be cultivated as dispersed as possible for larger production rate.
KW - Aggregation
KW - Chlorella
KW - Fractal
KW - Light transfer
KW - Monod model
KW - Radiative properties
KW - Specific growth rate
UR - https://www.scopus.com/pages/publications/105043410285
U2 - 10.1615/IHTC15.rad.009531
DO - 10.1615/IHTC15.rad.009531
M3 - 会议稿件
AN - SCOPUS:105043410285
SN - 9781567004212
T3 - International Heat Transfer Conference
SP - 7281
EP - 7294
BT - International Heat Transfer Conference 15
PB - Begell House Inc.
T2 - 15th International Heat Transfer Conference, 2014
Y2 - 10 August 2014 through 15 August 2014
ER -