Techno‐economic assessment of heterotrophic microalgae biodiesel production integrated with a sugarcane bio‐refinery

Renato Sano Coelho; Maria C. Cuellar; Telma T. Franco; Luuk A. M. van der Wielen

doi:10.1002/bbb.2174

journal article Open Access Dec 30, 2020

Techno‐economic assessment of heterotrophic microalgae biodiesel production integrated with a sugarcane bio‐refinery

Renato Sano Coelho

Maria C. Cuellar

Telma T. Franco

Luuk A. M. van der Wielen

Biofuels, Bioproducts and Biorefining Vol. 15 No. 2 pp. 416-429 · Wiley

View at Publisher Save 10.1002/bbb.2174

Abstract

AbstractThe use of diesel fuel in crop and transportation operations is responsible for one third of the carbon emissions in sugarcane biorefineries. A possible solution is to replace it with biodiesel from lipids, directly produced from sugarcane by highly productive heterotrophic microalgae. In this study a heterotrophic microalgae biodiesel plant, integrated with a typical Brazilian sugarcane bio‐refinery, was designed and evaluated. Molasses, steam, and electricity from sugarcane processing were used as inputs for microalgae production. For a non‐integrated plant, the production cost of the microalgae biodiesel was estimated at 2.51 and 2.27 $/liter for fed‐batch and continuous processes, respectively. Equipment for cultivation and carbon sources was the highest cost affecting the financial feasibility of the proposed design. For the integrated plant, at present ethanol and biodiesel selling prices, the profitability would be lower than a first‐generation sugarcane bio‐refinery using fossil diesel fuel for its operations. However, the CO2 emissions would be reduced by up to 50 000 × 103 kg per year at a cost of $83 10−3 kg−1 CO2‐eq. If carbon credits are considered, the process becomes economically profitable even at present fuel prices. © 2020 The Authors. Biofuels, Bioproducts, and Biorefining published by Society of Chemical Industry and John Wiley & Sons, Ltd

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References

Details

Published: Dec 30, 2020
Vol/Issue: 15(2)
Pages: 416-429
License: View

Authors

R

Renato Sano Coelho

School of Chemical Engineering University of Campinas Campinas Brazil; Department of Biotechnology Delft University of Technology Delft The Netherlands

M

Maria C. Cuellar

Department of Biotechnology Delft University of Technology Delft The Netherlands

T

Telma T. Franco

School of Chemical Engineering University of Campinas Campinas Brazil

L

Luuk A. M. van der Wielen

Department of Biotechnology Delft University of Technology Delft The Netherlands; Bernal Institute University of Limerick Limerick Ireland

Funding

Petrobras Award: 0050.0022725.06.4

Cite This Article

Renato Sano Coelho, Maria C. Cuellar, Telma T. Franco, et al. (2020). Techno‐economic assessment of heterotrophic microalgae biodiesel production integrated with a sugarcane bio‐refinery. Biofuels, Bioproducts and Biorefining, 15(2), 416-429. https://doi.org/10.1002/bbb.2174

Techno‐economic assessment of heterotrophic microalgae biodiesel production integrated with a sugarcane bio‐refinery

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