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Content Provider | World Health Organization (WHO)-Global Index Medicus |
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Author | Rösch, Christine Wegerer, Nadja Skarka, Johannes |
Description | Country affiliation: Germany Author Affiliation: Rösch C ( Institute for Technology Assessment and Systems Analysis (ITAS), Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany. christine.roesch@kit.edu) |
Abstract | Biodiesel production based on microalgae as feedstock is associated with a high demand of nutrients, respectively nitrogen and phosphorus. The production of 1l biodiesel requires between 0.23 and 1.55 kg nitrogen and 29-145 g of phosphorus depending of the cultivation conditions for microalgae. The supply of nutrients can be expected to severely limit the extent to which the production of biofuels from microalgae can be sustainably expanded. The nutrient demand can be reduced if the nutrients in the residual algae biomass after oil extraction are reused for algae cultivation. This modeling work illustrates that for the investigated process chains and scenarios the nutrient recycling rates are in the range from 30% to 90% for nitrogen and from 48% to 93% for phosphorus. The highest recycling values can be achieved by hydrothermal gasification of the oil-free residues. |
ISSN | 09608524 |
Journal | Bioresource Technology |
Volume Number | 107 |
e-ISSN | 18732976 |
Language | English |
Publisher | Elsevier |
Publisher Date | 2012-03-01 |
Publisher Place | Great Britain (UK) |
Access Restriction | Subscribed |
Subject Keyword | Biofuels Microalgae Metabolism Models, Theoretical Anaerobiosis Animal Feed Gases Journal Article Discipline Bioresource |
Content Type | Text |
Resource Type | Article |
Subject Domain (in MeSH) | Organism Forms Inorganic Chemicals Complex Mixtures Investigative Techniques Chemical Phenomena Physiological Phenomena |
Subject | Bioengineering Renewable Energy, Sustainability and the Environment Waste Management and Disposal Environmental Engineering Medicine |
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