| Full text | |
| Author(s): |
Hilares, Ruly Teran
[1, 2]
;
Dionizio, Rafaela Medeiros
[1]
;
Munoz, Salvador Sanchez
[1]
;
Prado, Carina Aline
[1]
;
de Sousa Junior, Ruy
[3]
;
da Silva, Silvio Silverio
[1]
;
Santos, Julio Cesar
[1]
Total Authors: 7
|
| Affiliation: | [1] Univ Sao Paulo, Dept Biotecnol, Escola Engn Lorena, BR-12602810 Lorena, SP - Brazil
[2] UCSM, Lab Mat, San Jose S-N, Arequipa - Peru
[3] Univ Fed Sao Carlos, Dept Engn Quim, Rod Washington Luis Km 235, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | ULTRASONICS SONOCHEMISTRY; v. 63, MAY 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
For biotechnological conversion of lignocellulosic biomass, a pre-treatment step is required before enzymatic hydrolysis of carbohydrate fractions of the material, which is required to produce fermentable sugars for generation of ethanol or other products in a biorefinery. The most of the reported pre-treatment technologies are in batch operation mode, presenting some disadvantages as dead times in the process. In this context, hydrodynamic cavitation (HC)-assisted alkaline hydrogen peroxide (AHP) pre-treatment in continuous process was proposed for pre-treatment of sugarcane bagasse (SCB). The system was designed with a main reactor containing two devices to generate cavitation by passing liquid medium through orifice plates. For SCB pretreated in continuous process, 52.79, 34.31, 22.13 and 15.81 g of total reducing sugars (TRS) per 100 g of SCB were released in samples pretreated using orifice plates with a number of holes of 24 (d = 0.45 mm), 16 (d = 0.65 mm), 12 (d = 0.8 mm) and 8 (d = 1 mm), respectively. Computational Fluid Dynamics (CFD) tools showed that 0.94 of vapor phase volume fraction and 0.19 of cavitation number were achieved at 31 m/s of throat velocity and upstream pressure of 350,000 Pa. By using pretreated SCB, 28.44 g of ethanol/L (84.31% of yield respect to theoretical value) was produced by immobilized Scheffersomyces stipitis NRRL-Y7124 in a simultaneous hydrolysis and fermentation process at high solid loading (16% S/L). Thus, HC-assisted process was proved as a promising technology for valorization of lignocellulosic biomass. (AU) | |
| FAPESP's process: | 17/11086-4 - Development of innovative approaches for the main stages of 2G ethanol production: continuous pretreatment using hydrodynamic cavitation and evaluation of SSCF process with interconnected reactors |
| Grantee: | Ruly Teran Hilares |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| 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 Opportunities: | Program for Research on Bioenergy (BIOEN) - Thematic Grants |
| FAPESP's process: | 16/23758-4 - Production of ethanol and pullulan assisted by unconventional methods in sugarcane bagasse biorefineries: hydrodynamic cavitation reactors and use of visible light with different wavelengths |
| Grantee: | Júlio César dos Santos |
| Support Opportunities: | Program for Research on Bioenergy (BIOEN) - Regular Program Grants |