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Anaerobic digestate as substrate for microalgae culture: the role of ammonium concentration on the microalgae productivity

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10.1016/j.biortech.2013.11.036
 
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Uggetti, EnricaMés informacióMés informacióMés informació
Sialve, Bruno
Latrille, Eric
Steyer, Jean Phillipe
Document typeArticle
Defense date2014-01
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
In spite of the increasing interest received by microalgae as potential alternatives for biofuel production, the technology is still not industrially viable. The utilization of digestate as carbon and nutrients source can enhance microalgal growth reducing costs and environmental impacts. This work assesses microalgal growth utilizing the liquid phase of anaerobic digestate effluent as substrate. The effect of inoculum/substrate ratio on microalgal growth was studied in a laboratory batch experiment conduced in 0.5 L flasks. Results suggested that digestate may be an effective substrate for microalgal growth promoting biomass production up to 2.6 gTSS/L. Microalgal growth rate was negatively affected by a self-shading phenomenon, while biomass production was positively correlated with the inoculum and substrate concentrations. Thus, the increasing of both digestate and microalgal initial concentration may reduce the initial growth rate (µ from 0.9 to 0.04 d-1) but significantly enhances biomass production (from 0.1 to 2.6 gTSS/L).
CitationUggetti, E., Sialve, B., Latrille, E., Steyer, J.P. Anaerobic digestate as substrate for microalgae culture: the role of ammonium concentration on the microalgae productivity. "Bioresource technology", Gener 2014, vol. 152, p. 437-443. 
URIhttp://hdl.handle.net/2117/116646
DOI10.1016/j.biortech.2013.11.036
ISSN0960-8524
Publisher versionhttps://www.sciencedirect.com/science/article/pii/S0960852413017525
Other identifiershttps://www.researchgate.net/publication/259246917_Anaerobic_digestate_as_substrate_for_microalgae_culture_The_role_of_ammonium_concentration_on_the_microalgae_productivity
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  • Departament d'Enginyeria Civil i Ambiental - Articles de revista [2.617]
  • GEMMA - Grup d'Enginyeria i Microbiologia del Medi Ambient - Articles de revista [182]
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