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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.)

Repeated batches as a feasible industrial process for hemicellulosic ethanol production from sugarcane bagasse by using immobilized yeast cells

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Author(s):
Antunes, F. A. F. [1] ; Santos, J. C. [1] ; Chandel, A. K. [1] ; Carrier, D. J. [2] ; Peres, G. F. D. [1] ; Milessi, T. S. S. [1] ; da Silva, S. S. [1]
Total Authors: 7
Affiliation:
[1] Univ Sao Paulo, Engn Sch Lorena, Estr Municipal Campinho S-N, BR-12602810 Sao Paulo - Brazil
[2] Univ Tennessee, Biosyst Engn & Soil Sci, 2605 E J Chapman Dr, Knoxville, TN - USA
Total Affiliations: 2
Document type: Journal article
Source: Cellulose; v. 26, n. 6, p. 3787-3800, APR 2019.
Web of Science Citations: 0
Abstract

Currently, sugarcane bagasse (SB) is the most abundant agricultural residue generated in Brazil. Given that hemicelluloses can reach up to 30% of SB, bioconversion of this fraction into second generation ethanol (2G) is essential for the success of biorefinery based operations. For 2G ethanol production, techniques such as immobilization process could be an interesting strategy to improve process productivity and must receive special investigation. Cell immobilization of the native Brazilian pentose wild converting yeast, Scheffersomyces shehatae UFMG-HM 52.2, was proposed for the production of 2G ethanol from SB hemicellulosic hydrolysate. A 2(3) full experimental design was constructed with varying concentrations of sodium alginate (1.0, 1.5 and 2.0% w/v), and calcium chloride (0.1 M, 0.15 M and 0.2 M) and conditioning time (12, 18 and 24 h). Through statistical analysis, it was determined that highest ethanol yield (Y-P/S of 0.32 g/g) and productivity (Q(P) of 0.146 g/L.h) were obtained with immobilization conditions of 1% sodium alginate, 0.2 M calcium chloride and 12 h of conditioning time. Repeated batches were conducted employing these defined conditions, showing the feasibility to use the system for 5 consecutive cycles. Results highlighted the use of proposed approach for ethanol production, promoting its inclusion in biorefinery operation portfolios. (AU)

FAPESP's process: 14/27055-2 - Processes intensification of lignocellulosic biorefineries integrating ethanol and xylitol production steps from sugarcane bagasse in fluidized bed bioreactor
Grantee:Felipe Antonio Fernandes Antunes
Support Opportunities: Scholarships in Brazil - Post-Doctoral