Nutrients Recycling in Biodiesel Production from Microalgae

C. Rösch, N. Wegerer & J. Skarka
A key issue for achieving scale­up of algae biofuels production is the supply of the macronutrients nitrogen and phosphorus. Economically viable and sustainable concepts for the supply from secondary resources and for recycling of nutrients need to be developed. The analysis of biodiesel production with microalgae shows that depending on the condition for cultivating microalgae with sufficient or deficient nitrogen, for one litre biodiesel, 1,55 kg (sufficient N) or 0,23 kg nitrogen (deficient N) and...