Shear-enhanced membrane filtration of model and real microalgae extracts for lipids recovery in biorefinery context

Liliana Villafaña-López (1, 2) , Erika Clavijo Rivera (1, 3) , Shuli Liu (4, 1) , Estelle Couallier (1, 3) , Matthieu Frappart (5, 6)

1 GEPEA-BAM - Bioprocédés Appliqués aux Microalgues
2 CIATEC C.A. - Centro de Innovación Aplicada en Tecnologías Competitivas
3 CNRS - Centre National de la Recherche Scientifique
4 ADEME - Agence de l'Environnement et de la Maîtrise de l'Energie
5 GEPEA - Laboratoire de génie des procédés - environnement - agroalimentaire
6 IUT Saint-Nazaire - Institut Universitaire de Technologie Saint-Nazaire

In this work, the hydrodynamic effects of rotating disk filtration (with maximum shear rates of 16 000 s −1 and 66 000 s −1) were evaluated and compared with the crossflow filtration (16 000 s −1) in the recovery of lipids from a model solution that simulates the characteristics of Parachlorella kessleri aqueous extracts. Four polymeric membranes were tested. The PAN 500 kDa membrane along with the rotating disk filtration presented the best performances for lipid concentration and coalescence. The rotating disk filtration was tested with real microalgae extracts, confirming the total lipid retention and the limited membrane fouling.

Mots clés: Lipids; Microalgae; Rotating disk filtration; Oil-in-water emulsion; Ultrafiltration

Domaines: Génie chimique; Biotechnologies

Liliana Villafaña-López, Erika Clavijo Rivera, Shuli Liu, Estelle Couallier, Matthieu Frappart. Shear-enhanced membrane filtration of model and real microalgae extracts for lipids recovery in biorefinery context. Bioresource Technology, 2019, 288, pp.121539. ⟨10.1016/j.biortech.2019.121539⟩. ⟨hal-02319633⟩