title: Enhancing Photon Utilization Efficiency for Astaxanthin Production from Haematococcus lacustris Using a Split-Column Photobioreactor.
abstract: A split-column photobioreactor (SC-PBR), consisting of two bubble columns with different sizes, was developed to enhance the photon utilization efficiency in an astaxanthin production process from Haematococcus lacustris. Among the two columns, only the smaller column of SC-PBR was illuminated. Astaxanthin productivities and photon efficiencies of the SC-PBRs were compared with a standard bubble-column PBR (BC-PBR). Astaxanthin productivity of SC-PBR was improved by 28%, and the photon utilization efficiencies were 28-366% higher than the original BC-PBR. The results clearly show that the effective light regime of SC-PBR could enhance the production of astaxanthin.
authors.affiliation: National Marine Bioenergy R&D Center & Department of Biological Engineering, Inha University, Incheon 22212, Republic of Korea.
authors.forename: Z-Hun
authors.initials: ZH
authors.lastname: Kim
authors.affiliation: National Marine Bioenergy R&D Center & Department of Biological Engineering, Inha University, Incheon 22212, Republic of Korea.
authors.forename: Hanwool
authors.initials: H
authors.lastname: Park
authors.affiliation: National Marine Bioenergy R&D Center & Department of Biological Engineering, Inha University, Incheon 22212, Republic of Korea.
authors.forename: Ho-Sang
authors.initials: HS
authors.lastname: Lee
authors.affiliation: National Marine Bioenergy R&D Center & Department of Biological Engineering, Inha University, Incheon 22212, Republic of Korea.
authors.forename: Choul-Gyun
authors.initials: CG
authors.lastname: Lee
mesh_terms: D018533:Biomass; D000460:Chlorophyta / Q000378:metabolism*; D005285:Fermentation; D008027:Light; D058433:Photobioreactors; D017785:Photons; D024341:Xanthophylls / Q000096:biosynthesis
chemical_list: D024341:Xanthophylls; C005948:astaxanthine
keywords: Bubble-column photobioreactor; Haematococcus; astaxanthin; liquid circulation; photon efficiency