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Title: | Techno-economic analysis of biodiesel production from microbial oil using cardoon stalks as carbon source | Authors: | Castellini, Marco Ubertini, Stefano Barletta, Diego Baffo, Ilaria Buzzini, Pietro Barbanera, Marco |
Journal: | ENERGIES | Issue Date: | 2021 | Abstract: | Today one of the most interesting ways to produce biodiesel is based on the use of oleaginous microorganisms, which can accumulate microbial oil with a composition similar to vegetable oils. In this paper, we present a thermo-chemical numerical model of the yeast biodiesel production process, considering cardoon stalks as raw material. The simulation is performed subdividing the process into the following sections: steam explosion pre-treatment, enzymatic hydrolysis, lipid production, lipid extraction, and alkali-catalyzed transesterification. Numerical results show that 406.4 t of biodiesel can be produced starting from 10,000 t of lignocellulosic biomass. An economic analysis indicates a biodiesel production cost of 12.8 USD/kg, thus suggesting the need to increase the capacity plant and the lipid yield to make the project economically attractive. In this regard, a sensitivity analysis is also performed considering an ideal lipid yield of 22% and 100,000 t of lignocellulosic biomass. The biodiesel production costs related to these new scenarios are 7.88 and 5.91 USD/kg, respectively. The large capacity plant combined with a great lipid yield in the fermentation stage shows a biodiesel production cost of 3.63 USD/kg making the product competitive on the current market of biofuels by microbial oil. |
URI: | http://hdl.handle.net/2067/43642 | ISSN: | 1996-1073 | DOI: | 10.3390/en14051473 | Rights: | Attribution-NonCommercial-NoDerivs 3.0 United States |
Appears in Collections: | A1. Articolo in rivista |
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energies-14-01473-v2.pdf | Final paper available in gold open access here https://www.mdpi.com/1996-1073/14/5/1473 | 19.12 MB | Adobe PDF | Request a copy |
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