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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Experimental optimization and techno-economic analysis of bioethanol production by simultaneous saccharification and fermentation process using sugarcane straw

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Pratto, Bruna [1] ; Rodrigues dos Santos-Rocha, Martha Suzana [2] ; Longati, Andreza Aparecida [3, 4] ; de Sousa Junior, Ruy [1, 5] ; Goncalves Cruz, Antonio Jose [1, 5]
Total Authors: 5
[1] Univ Fed Sao Carlos, Chem Engn Grad Program, Rod Washington Luis Km 235, BR-13565905 Sao Carlos, SP - Brazil
[2] Fed Inst Alagoas, Rod Eng Joaquim Goncalves, Rod Engn Joaquim Goncalves, BR-57200000 Penedo, AL - Brazil
[3] Univ Estadual Campinas, Sch Chem Engn, Dept Mat & Bioproc Engn, BR-13083852 Campinas, SP - Brazil
[4] Fundacao Educ Ituverava, Rua Cel Flauzino Barbosa Sandoval 1259, BR-14500000 Ituverava, SP - Brazil
[5] Univ Fed Sao Carlos, Chem Engn Dept, Rod Washington Luis Km 235, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 5
Document type: Journal article
Source: Bioresource Technology; v. 297, FEB 2020.
Web of Science Citations: 0

The present work aims to determine a suitable yield-productivity balance in bioethanol production from hydrothermally pretreated sugarcane straw via pre-saccharification (PS) and simultaneous saccharification and fermentation (SSF). PS experiments were carried out evaluating effects of enzymatic dosage, biomass loading, and PS time. The performance of the whole process (PSSSF) was evaluated based on overall ethanol yield and productivity considering a simultaneous optimization (desirability function) of both variables. The multi-criteria optimization enabled to reach 5.7% w/w ethanol concentration yielding 290 L of ethanol per ton of pretreated sugarcane straw within 45 h of total processing time. Furthermore, a techno-economic analysis was performed under optimized conditions (14.5 FPU/g(cellulose), 19.3% w/v biomass loading and 33 h PS time). This process was integrated into a first-generation plant. Although the economic evaluation exhibited a negative performance, a sensitivity analysis indicated that a decrease of 23.3% in operational expenditure would be enough to achieve feasibility. (AU)

FAPESP's process: 16/10636-8 - From the cell factory to the Biodiesel-Bioethanol integrated biorefinery: a systems approach applied to complex problems in micro and macroscales
Grantee:Roberto de Campos Giordano
Support type: Program for Research on Bioenergy (BIOEN) - Thematic Grants
FAPESP's process: 15/11468-9 - Implementation of a process unit for energy generation from vinasse and integration in a ethanol production biorefinary
Grantee:Andreza Aparecida Longati de Oliveira
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 17/18194-7 - Techno-economic-environmental analysis of the use of vinasse biogas in different biorefinary configurations
Grantee:Andreza Aparecida Longati de Oliveira
Support type: Scholarships abroad - Research Internship - Doctorate (Direct)
FAPESP's process: 19/15851-2 - Reverse techno-economic-environmental analysis carotenoids production microbial oil by the Rhodotorula toruloides oleaginous yeast from the hemicellulose fraction of sugarcane bagasse integrated into the biorefinery ethanol-biodiesel
Grantee:Andreza Aparecida Longati de Oliveira
Support type: Scholarships in Brazil - Post-Doctorate