Biomass Production and Nutrient Budget in Outdoor Cultures of Scenedesmus Obliquus (chlorophyceae) in Artificial Wastewater, Under the Winter and Summer Conditions of Mazatlán, Sinaloa, Mexico
Year: 2005
Type: article
Abstract: The biomass production of outdoor cultures of Scenedesmus obliquus in artificial wastewater maintained during three days under the winter and summer tropical conditions of Mazatlán, Sinaloa, Mexico, ranged from 26 to 43 mg•l -1 , with protein contents of 33.5-38% and 51% in winter and summer, respectively.The final dissolved nitrogen concentrations were 53% of the initial value in winter and 21% in summer.In both seasonal situations, most of the removal was due to ammonia stripping caused by the high pH of the medium during light hours, and the final nitrogen content of the biomass showed that only 3.7% to 9.7% had been recycled.Phosphorus was removed only during the day, with a total abatement of 45% in winter and 73% in summer.Of this, only 41.5% to 51% was contained in the biomass, showing that the photosynthesis-induced high pH values of the medium play an important role in tertiary wastewater treatment and that, in addition, microalgae may be used only in outdoor systems with long retention times, which might make their use impractical for large or rapidly growing cities.
Source: HAL
Authors: Gómez-Villa, H, Voltolina, D, Nieves, M, Piña, P
Institution: Observatoire Océanologique de Banyuls-sur-Mer
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2522304628