Statistical study of growth kinetics and lipid content of microalgae grown in brackish waters for bioenergetic purposes

This study aimed to statistically prove the influence of salinity on growth kinetics and intracellular lipid accumulation in microalgae. The species Chlorella sp., Scenedesmus acuminatus, Nannochloropsis Monoraphidium contortum Pediastrum tetras were studied, which isolated Brazilian semi-arid region cultivated synthetic media with addition NaCl. From crops, kinetics, dry biomass production content analyzed, using experimental planning for one factor as a tool, NaCl concentration an independent variable. kinetic parameters maximum speed (µmax) generation time (tg), well response variables studied. results showed that, sp. tetras, salt stress contributed increase µmax consequent decrease tg. highest levels obtained (62.04%), medium (54.04%) lowest. Dry was higher acuminatus (1,941.37 mg.L-1) (1237.05 mg.L-1), both at 4.0 g.L-1. Therefore, saline acted directly cell species, can be used device enhance purpose producing biofuels.