 Impact of nitrogen on the industrial feasibility of biodiesel production from lipid accumulated in oleaginous yeast with wastewater sludge and crude glycerolJiaxin Chen, Xiaolei Zhang and Rajeshwar Dayal Tyagi Energy, 2021, vol. 217, issue C Abstract: 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. Keywords: Biodiesel; Lipid; Wastewater sludge; Crude glycerol; Cost (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:217:y:2021:i:c:s0360544220324506 DOI: 10.1016/j.energy.2020.119343 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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