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2018-12-11 - Colloque/Présentation - poster - Anglais - page(s)

Berriche Hana , Thomas Diane , Hantson Anne-Lise , "Study of the anaerobic digestion of microalgae residues" in Journée Jeunes Chercheurs en Génie des Procédés et Energétique, Villeneuve d'Ascq, France, 2018

  • Codes CREF : Sciences de l'ingénieur (DI2000), Biotechnologie (DI3800), Traitement des déchets (DI3845)
  • Unités de recherche UMONS : Génie des Procédés chimiques et biochimiques (F505)
  • Instituts UMONS : Institut des Biosciences (Biosciences), Institut de Recherche en Energétique (Energie)
Texte intégral :

Abstract(s) :

(Anglais) The present research is related to the context of the Algotech project. This study comes at the end of the chain focusing on treating microalgae residues by anaerobic digestion (AD). The two main products of the AD are biogas and a nutrient digestate. Due to the high rate of protein in lipid-extracted microalgae residues and their very low carbon to nitrogen (C/N) ratio (C/N ratio ≤ 10), an ammonia and hydrogen sulfide inhibition may occur. A co-digestion with other wastes has been suggested to promote the sustainability of the process and to reduce greenhouse gas emission by producing clean energy. Spent coffee grounds (SCG) were chosen mainly because of their attractive C/N ratio of 22 and because of their abundance. After selecting the inoculum with the higher methanogenic abundance and activity, a co-digestion of microalgae residues with SCG at different concentrations will be assessed via biomethane potential system.