Effect of ferric ion on nitrogen consumption, biomass and oil accumulation of a Scenedesmus rubescens-like microalga

► Scenedesmus rubescens-like microalga prefers Fe2+-SO42-/EDTA as the iron source. ► High or low Fe2+ concentration restricts ammonia consumption and FAME accumulation. ► Fe2+ concentrations significantly affect the FAME profiles and productivity. ► High C18 content of this species strengthen its potential for biodiesel production.