Control of nitrogen behaviour by phosphate concentration during microalgal-bacterial cultivation using digestate
| Autor: | Nicolas Bernet, Cyril Marcilhac, Anne-Marie Pourcher, Christine Ziebal, Fabrice Béline, Bruno Sialve |
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| Přispěvatelé: | Gestion environnementale et traitement biologique des déchets (UR GERE), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Université européenne de Bretagne - European University of Brittany (UEB), Laboratoire de Biotechnologie de l'Environnement [Narbonne] (LBE), Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Regional Council of Brittany, ADEME, Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
community evolution
Environmental Engineering Nitrogen 020209 energy Nitrogen assimilation [SDV]Life Sciences [q-bio] chemistry.chemical_element Bioengineering Aquaculture Chlorella 02 engineering and technology 010501 environmental sciences 01 natural sciences Phosphates chemistry.chemical_compound Species Specificity Botany 0202 electrical engineering electronic engineering information engineering Biomass phosphorus Waste Management and Disposal Scenedesmus 0105 earth and related environmental sciences biology Renewable Energy Sustainability and the Environment Phosphorus microalgae General Medicine Phosphate biology.organism_classification nitrification Anaerobic digestion chemistry Environmental chemistry digestate Digestate Nitrification |
| Zdroj: | Bioresource Technology Bioresource Technology, Elsevier, 2015, 175, pp.224-230. ⟨10.1016/j.biortech.2014.10.022⟩ |
| ISSN: | 0960-8524 |
| Popis: | The cultivation of microalgae with digestate supernatant is a promising process for the recovery of mineralized nutrients (P, N) from anaerobic digestion. Nevertheless, the variability of phosphorus concentration in the influent could limit this process. The impact of initial N:P ratios between 3 and 76gNgP(-1) was studied and proved no growth limitation over 14-day batch experiments even when P was depleted. Nitrogen assimilation was not affected by phosphorus concentrations and reached 10.1mgNL(-1)d(-1) whereas phosphorus removal ranged from 0.6 to 2.0mgPL(-1)d(-1). The biomass N:P ratio was found to be a function of the influent N:P ratio. Phosphorus storage by microalgae was thus confirmed. Nitrification was found to be highly dependent on the initial phosphorus concentration. The evolution of microalgae communities was also monitored and revealed the advantage of Scenedesmus over Chlorella when the media was phosphorus-depleted. |
| Databáze: | OpenAIRE |
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