Arthrospira platensis Cultivation in a Bench-Scale Helical Tubular Photobioreactor

Cultivations of Arthrospira platensis were carried out to evaluate the CO2 capture capacity this cyanobacterium under bench-scale conditions. For purpose, influence light intensity on microbial growth and photosynthetic efficiency has been investigated in a helical photobioreactor. Five cultivations performed at different photon flux densities (23 ≤ PPFD 225 µmol photons m−2 s−1) by fed-batch pulse-feeding pure carbon dioxide from cylinder into helicoidal In particular, range (82–190 was identified which biomass concentration reached values (9–11 gDW L−1) significantly higher than those reported literature for other configurations closed photobioreactors. Furthermore, as A. suspensions behave Newtonian non-Newtonian (pseudoplastic) fluids very low high concentrations, respectively, flow analysis evaluating most suitable mixing conditions depending growth. The results obtained study appear be promising suggest use photobioreactor configuration reduce emissions industrial gaseous effluents.