Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 497845
Title Photobioreactors for microalgal cultures : A Lagrangian model coupling hydrodynamics and kinetics
Author(s) Olivieri, Giuseppe; Gargiulo, Luigi; Lettieri, Paola; Mazzei, Luca; Salatino, Piero; Marzocchella, Antonio
Source Biotechnology Progress 31 (2015)5. - ISSN 8756-7938 - p. 1259 - 1272.
DOI http://dx.doi.org/10.1002/btpr.2138
Department(s) Bioprocess Engineering
Publication type Refereed Article in a scientific journal
Publication year 2015
Keyword(s) Hydrodynamic - Light - Microalgae - Photobioreactor - Random walk - Turbulent dispersion
Abstract

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.

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