Details

Autor(en) / Beteiligte

• González López, C.V
• Acién Fernández, F.G
• Fernández Sevilla, J.M
• Sánchez Fernández, J.F
• Cerón García, M.C
• Molina Grima, E

Titel

Utilization of the cyanobacteria Anabaena sp. ATCC 33047 in CO₂ removal processes

Ist Teil von

• Bioresource technology, 2009-12, Vol.100 (23), p.5904-5910

Ort / Verlag

Kidlington: [New York, NY]: Elsevier Ltd

Erscheinungsjahr

2009

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• In this paper the utilization of the cyanobacteria Anabaena sp. in carbon dioxide removal processes is evaluated. For this, continuous cultures of this strain were performed at different dilution rates; alternatives for the recovery of the organic matter produced being also studied. A maximum CO₂ fixation rate of 1.45g CO₂ L⁻¹ day⁻¹ was measured experimentally, but it can be increased up to 3.0g CO₂ L⁻¹ day⁻¹ outdoors. The CO₂ is mainly transformed into exopolysaccharides, biomass representing one third of the total organic matter produced. Organic matter can be recovered by sedimentation with efficiencies higher than 90%, the velocity of sedimentation being 2·10⁻⁴ s⁻¹. The major compounds were carbohydrates and proteins with productivities of 0.70 and 0.12gL⁻¹ day⁻¹, respectively. The behaviour of the cultures of Anabaena sp. has been modelized, also the characteristics parameters requested to design separation units being reported. Finally, to valorizate the organic matter as biofertilizers and biofuels is proposed.