Microbial lipid and biodiesel production from municipal sludge fortified with crude glycerol medium using pH-based fed-batch strategy.

Kumar, Lalit; Yellapu, Sravan Kumar; Tyagi, Rajeshwar Dayal et Drogui, Patrick ORCID: https://orcid.org/0000-0002-3802-2729 (2021). Microbial lipid and biodiesel production from municipal sludge fortified with crude glycerol medium using pH-based fed-batch strategy. Journal of Environmental Chemical Engineering , vol. 9 , nº 1. p. 105032. DOI: 10.1016/j.jece.2021.105032.

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Résumé

To achieve a good performance in fed-batch fermentation, the feeding strategy is essential and important. In this study, pH-based (pH 6.0) fed-batch fermentation has been conducted on municipal sludge fortified with crude glycerol medium using Y. lipolytica SKY7 (YL). No additional nitrogen source and trace elements had to be added as secondary municipal sludge had sufficient nitrogen and trace elements to support growth of YL. At 72 h of fed-batch fermentation, high biomass (59.67 g/L) and lipid concentration (31.44 g/L) was obtained. The biodiesel produced using sludge cultivated YL had similar fatty acid ester profile as that of vegetable oil. It was revealed from energy balance that biodiesel production using pH-based fed-batch strategy was energetically favorable and has unit production cost of 0.67 $/L B10.

Type de document:	Article
Mots-clés libres:	pH-based fermentation; municipal sludge; crude glycerol; microbial lipid; biodiesel
Centre:	Centre Eau Terre Environnement
Date de dépôt:	03 févr. 2021 19:27
Dernière modification:	23 déc. 2022 05:00
URI:	https://espace.inrs.ca/id/eprint/11221

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