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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.)

Hydrodynamic cavitation-assisted continuous pre-treatment of sugarcane bagasse for ethanol production: Effects of geometric parameters of the cavitation device

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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