期刊
BIOTECHNOLOGY PROGRESS
卷 31, 期 5, 页码 1259-1272出版社
WILEY
DOI: 10.1002/btpr.2138
关键词
photobioreactor; microalgae; light; hydrodynamic; random walk; turbulent dispersion
资金
- LLP-Erasmus program
- MagicOil-Ministero dell'Ambiente e della Tutela del Territorio e del Mare
- PRIN Innovative down-stream processing of conversion of algal biomass for the production of jet fuel and green diesel
- F.A.R.O. (Finanziamenti per l' Avvio di Ricerche Originali, III tornata) Controllo e stabilita di processi diffusivi nell'ambiente
Closed photobioreactors have to be optimized in terms of light utilization and overall photosynthesis rate. A simple model coupling the hydrodynamics and the photosynthesis kinetics has been proposed to analyze the photosynthesis dynamics due to the continuous shuttle of microalgae between dark and lighted zones of the photobioreactor. Microalgal motion has been described according to a stochastic Lagrangian approach adopting the turbulence model suitable for the photobioreactor configuration (single vs. two-phase flows). Effects of light path, biomass concentration, turbulence level and irradiance have been reported in terms of overall photosynthesis rate. Different irradiation strategies (internal, lateral and rounding) and several photobioreactor configurations (flat, tubular, bubble column, airlift) have been investigated. Photobioreactor configurations and the operating conditions to maximize the photosynthesis rate have been pointed out. Results confirmed and explained the common experimental observation that high concentrated cultures are not photoinhibited at high irradiance level. (c) 2015 American Institute of Chemical Engineers Biotechnol. Prog., 31:1259-1272, 2015
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