Different effect of nitrogen sources in autotrophic and mixotrophic culture of Scenedesmus sp for biomass and carotenoids production using acidic coal mine drainage effluents

In the present study, conditions for autotrophic and mixotrophic culture of Scenedesmus sp were established. Effluents from acidic coal mine drains used to study biomass carotenoid production, both under in relation effect different sources nitrogen: sodium nitrate, urea ammonium phosphate. Pollutant removal was determined, such as COD, TOC, heavy metals, ions total suspended solids. Batch cultures lasted nine days carotenoids pollutant compared each condition. The highest concentration reached 1.2 g/L with urea, followed by nitrate 0.9 a C/N ratio 6:1. specific 19.43 mg /g biomass. phosphate found be inhibitory growth microalgae lowest results all parameters except where very similar those urea. Finally, presented percentages, being 86.97% iron, 58.29% chlorides 92.5% COD.