The growth of the freshwater microalga Scenedesmus obliquus was studied at 30°C in a mineral culture medium with phosphorus concentrations of between 0 and 372 pro. The values for the specific growth rates, between So=0 #m and S,=298 pro, fitted a semistructured substrate-limitation model with #,,~ = 0.0466 h P.,,2 = 0.0256 h ~ and Ks = 0.2 ttm. The specific uptake rate of phosphorus reached a ...

Contextualización: la contaminación directa de cuerpos agua, por vertimientos agua residual contaminada con metales pesados, es un problema importante que se ha agudizado en las últimas décadas, debido a los pesados pueden alterar el correcto funcionamiento ecosistemas. Vacío investigación: hace necesario y urgente búsqueda alternativas remoción contaminantes metálicos sean bajo costo amigables...

Laboratory experiments were done to assess 110mAg, 60Co, 137Cs, and 54Mn uptake by two phytoplankton species, the chlorophyte Scenedesmus obliquus and the small diatom Cyclotella meneghiana. Mn and Co were characterized by similar uptake kinetic rates, 20–30 d21, whatever the algal species, whereas depuration rates were 3–60 d21. Silver uptake and depuration rates were very high (144–293 d21). ...