title: Vertical tubular photobioreactor for semicontinuous culture of Cyanobium sp.
abstract: We evaluated the kinetic culture characteristics of the microalgae Cyanobium sp. grown in vertical tubular photobioreactor in semicontinuous mode. Cultivation was carried out in vertical tubular photobioreactor for 2 L, in 57 d, at 30 °C, 3200 Lux, and 12 h light/dark photoperiod. The maximum specific growth rate was found as 0.127 d(-1), when the culture had blend concentration of 1.0 g L(-1), renewal rate of 50%, and sodium bicarbonate concentration of 1.0 g L(-1). The maximum values of productivity (0.071 g L(-1) d(-1)) and number of cycles (10) were observed in blend concentration of 1.0 g L(-1), renewal rate of 30%, and bicarbonate concentration of 1.0 g L(-1). The results showed the potential of semicontinuous cultivation of Cyanobium sp. in closed tubular bioreactor, combining factors such as blend concentration, renewal rate, and sodium bicarbonate concentration.
authors.affiliation: Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande (FURG), P.O. Box 474, 96201-900, Rio Grande-RS, Brazil.
authors.forename: A A
authors.initials: AA
authors.lastname: Henrard
authors.forename: M G
authors.initials: MG
authors.lastname: de Morais
authors.forename: J A V
authors.initials: JA
authors.lastname: Costa
mesh_terms: D000704:Analysis of Variance; D001709:Biotechnology / Q000379:methods*; D018929:Cell Culture Techniques / Q000379:methods*; D003470:Culture Media / Q000737:chemistry*; D000458:Cyanobacteria / Q000254:growth & development*; D058433:Photobioreactors; D017693:Sodium Bicarbonate; D013053:Spectrophotometry
chemical_list: D003470:Culture Media; D017693:Sodium Bicarbonate