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Novel electrochemical method for the recovery of lipids from microalgae for biodiesel production.

Daghrir, Rimeh; Igounet, Lorene; Brar, Satinder Kaur; Drogui, Patrick (2014). Novel electrochemical method for the recovery of lipids from microalgae for biodiesel production. Journal of the Taiwan Institute of Chemical Engineers , vol. 45 , nº 1. p. 153-162. DOI: 10.1016/j.jtice.2013.04.013.

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Résumé

The performance of electrochemical process for efficient extraction of lipids and proteins from Chlorella vulgaris as microalgae was studied. The process was evaluated in terms of its capability of simultaneously extracting lipids and proteins using different types of anode materials (Ti/IrO2, Ti, Ti/SnO2 and Ti/PbO2). Relatively higher extraction of lipids (3.27% gLip/gdry wt) and proteins (39.91 mg/L) was reported using Ti/IrO2 material at the anode. Factorial design (FD) and central composite design (CCD) methodologies were successively used to define the optimal operating conditions to reach maximum extraction of lipids and proteins from microalgae. Current intensity and recycling flow rate were found to influence the lipids and proteins extraction. The contribution of recycling flow rate on the lipids and proteins extraction was around 61.72% and 53.80%, respectively, whereas the contribution of current intensity on lipids and proteins extraction was around 22.63% and 21.83%, respectively. The electrochemical treatment applied under 0.6 A of current intensity and 394.51 mL/min of recycling flow rate during 100 min of electrolysis time was found to be the optimal operating condition in terms of cost/effectiveness. Under these optimal conditions, 5.53 ± 0.23% gLip/gdry wt of lipid and 120.20 ± 2.05 mg/L of proteins were reported.

Type de document:
Mots-clés libres: Chlorella vulgaris; electrochemical process; lipids; microalgae; proteins; response surface methodology
Centre: Centre Eau Terre Environnement
Date de dépôt: 26 avr. 2017 13:33
Dernière modification: 05 juill. 2017 19:30
URI: http://espace.inrs.ca/id/eprint/3563

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