Retracted: Potential carbon dioxide fixation by industrially important microalgae.
The present study aimed at investigating the carbon metabolism in terms of carbon dioxide fixation and its destination in microalgae cultivations. To this purpose, analysis of growth parameters, media of cultivation, biomass composition and productivity and nutrients balance were performed. Four microalgae suitable for mass cultivation were evaluated: Dunaliella tertiolecta SAD-13.86, Chlorella vulgaris LEB-104, Spirulina platensis LEB-52 and Botryococcus braunii SAG-30.81. Global rates of carbon dioxide and oxygen were determinated by a system developed in our laboratory. B. braunii presented the highest CO(2) fixation rate, followed by S. platensis,D. tertiolecta and C. vulgaris (496.98, 318.61, 272.4 and 251.64 mg L(-1)day(-1), respectively). Carbon dioxide fixated was mainly used for microalgal biomass production. Nitrogen, phosphorus (calcium for D. tertiolecta), potassium and magnesium consumption rates (mg gX(-1)) were evaluated for the four microalgae. Biomass composition presented a predominance of proteins but also a high amount of lipids, especially in D. tertiolecta and B. braunii.
Sydney
Eduardo Bittencourt
EB
Bioprocess Engineering and Biotechnoloy Department, Federal University of Parana, Centro Politécnico, Usina Piloto B, CEP 81531-990 Curitiba, Paraná, Brazil.
Sturm
Wilerson
W
de Carvalho
Julio Cesar
JC
Thomaz-Soccol
Vanete
V
Larroche
Christian
C
Pandey
Ashok
A
Soccol
Carlos Ricardo
CR
D001673:Biodegradation, Environmental; D002245:Carbon Dioxide / Q000378:metabolism*; D056890:Eukaryota / Q000145:classification* / Q000378:metabolism*; D005240:Feasibility Studies; D013045:Species Specificity
D002245:Carbon Dioxide