Response surface for sugars extracted from lignocellulosic material providing low energy expenditure

Response surface for sugars extracted from lignocellulosic material providing low energy expenditure

Authors

DOI:

https://doi.org/10.5433/1679-0375.2019v40n2p129

Keywords:

Sugarcane bagasse, Factorial planning, Chemical pre-treatment.

Abstract

The objective of this work was the extraction of sugars from the sugarcane bagasse from the chemical pretreatment with diluted sulfuric acid, with a factorial planning of 3 factors with two levels each. The levels of 5 and 15 g for sample mass, two variations of 5 and 10% acid concentration and 25 and 50 oC temperature variations were adopted. The characterization of the hydrolyzate was done through the refractive index and by high performance liquid chromatography. For the refractive index, the tests 3, 7 and 8 had the highest amount of soluble solids extracted, being 13.005; 13.025 and 13.010 oBrix, respectively. According to the effects obtained from the results of the refractive index, the only significant main effect is the increase in acid concentration, which increases the refractive index. In the results obtained by liquid chromatography, we were able to identify the presence of glucose, xylose and cellobiose in the solutions and the condition that resulted in a higher extraction of sugars was: 15 g biomass, 10% acid concentration and temperature at 50 oC. With the concentration of the acid in the upper limit (10%) the sugar extraction in this work was significant with 13.025 gL -1.

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Author Biographies

Fabiana da Silva Pieta, Universidade Estadual do Oeste do Paraná - UNIOESTE (Campus Cascavel)

Biofuels Technologist - UFPR. Master student in Energy Engineering in Agriculture - UNIOESTE

Reinaldo Aparecido Bariccatti, Universidade Estadual do Oeste do Paraná - UNIOESTE (Campus Toledo)

PhD in Chemistry, Physical Chemistry sub-area, State University of Campinas. Full Professor at the State University of Western Paraná.

References

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Published

2019-12-18

How to Cite

Pieta, F. da S., & Bariccatti, R. A. (2019). Response surface for sugars extracted from lignocellulosic material providing low energy expenditure. Semina: Ciências Exatas E Tecnológicas, 40(2), 129–134. https://doi.org/10.5433/1679-0375.2019v40n2p129

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