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Impact of nitrogen on the industrial feasibility of biodiesel production from lipid accumulated in oleaginous yeast with wastewater sludge and crude glycerol.

Chen, Jiaxin, Zhang, Xiaolei et Tyagi, Rajeshwar Dayal (2021). Impact of nitrogen on the industrial feasibility of biodiesel production from lipid accumulated in oleaginous yeast with wastewater sludge and crude glycerol. Energy , vol. 217 . p. 119343. DOI: 10.1016/j.energy.2020.119343.

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Résumé

In this study, oleaginous yeast Trichosporon oleaginosus was cultivated in wastewater sludge and crude glycerol medium for lipid production. The sufficiency of nitrogen in sludge was verified by conducting the experiments with and without the addition of NH₄Cl in the medium. Biomass production, lipid production and lipid content of the fermentation with NH₄Cl addition were 55.33 g/L, 26.98 g/L and 48.77% (w/w), respectively; however, they were 42.66 g/L, 17.88 g/L and 41.91% (w/w) in the one without addition of NH₄Cl, respectively. The process of biodiesel produced from the lipid cultivated with sludge and crude glycerol could provide net energy gain and greenhouse gas emission reduction. The estimated biodiesel production cost in this study was 630 US $/tonne with NH₄Cl addition and 860 $/tonne without NH₄Cl addition, respectively. Compared to the current commercial biodiesel price (900 US $/tonne), biodiesel production from wastewater sludge and crude glycerol is very competitive. The study provides an insight of sustainable bioenergy production system from wastewater sudge.

Type de document: Article
Mots-clés libres: biodiesel; lipid; wastewater sludge; crude glycerol; cost
Centre: Centre Eau Terre Environnement
Date de dépôt: 15 oct. 2021 17:42
Dernière modification: 15 oct. 2021 17:42
URI: https://espace.inrs.ca/id/eprint/11977

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