Response surface for sugars extracted from lignocellulosic material providing low energy expenditure
DOI:
https://doi.org/10.5433/1679-0375.2019v40n2p129Keywords:
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.Downloads
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References
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BRIENZO, M.; FERREIRA, S.; VICENTIM, M. P.; SOUZA, W.; SANT’ANNA, C. Comparison Study on the Biomass Recalcitrance of Different Tissue Fractions of Sugarcane Culm. BioEnergy Research, New York, v. 7, ed. 4, p. 1454-1465, 2014. Doi: http://dx.doi.org/10.1007/s12155-014-9487-8
CARPIO, L. G. T.; SOUZA, F. S. Optimal allocation of surgacane bagasse for producing bioelectricity and second generation ethanol in Brazil: scenarios of cost reductions. Renewable Energy, Oxford, v. 111, p. 771-780, 2017. Doi: https://doi.org/10.1016/j.renene.2017.05.015
CONAB - Companhia Nacional de Abastecimento. Safra da Cana-de-açúcar. Brasília: CONAB, 2017. Available at: <http://www.conab.gov.br>. Accessed on: 24 Apr. 2019.
FERNANDES, A. S.; MIGUEL, E. R. The importance of the use of sugarcane bagasse in the generation of energy in thermoelectric plants. In: SCIENTIFIC MEETING AND UNESALESIAN EDUCATION SYMPOSIUM, 3., 2011, Lins. Anais [. . . ]. Lins, SP: [S. n.], 2011.
FERNANDES, E.; ALVES, R. C.; PAGNOCCA, F. C.; CONTIERO, J.; BRIENZO, M. Sugar and ethanol production process from sugarcane. In: MURPHY, R. Sugarcane: production systems, uses and economic importance. Nova Iorque: Nova Science Publishers, 2017. p. 193-216.
MILANEZ, A. Y. et al. From promise to reality: how cellulosic ethanol can revolutionize the sugarcane industry - an assessment of competitive potential and public policy suggestions. BNDES Sectorial, Rio de Janeiro, v. 41, n.1, p. 237-294, 2015.
OLADI, S.; AITA, G. M. Optimization of liquid ammonia pretreatment variables for maximum enzymatic hydrolysis yield of energy cane bagasse. Industrial crops and products, Pittsburgh, v. 103, p. 122-132, 2017. Doi: https://doi.org/10.1016/j.indcrop.2017.02.023
RAELE, R.; RAELE, R.; BOAVENTURA, J. M. G.; FISCHMANN, A. A.; SARTURI, G. Scenarios for the second generation ethanol in Brazil. Technological Forecasting & Social Change, Rio de Janeiro, v. 87, p. 205-223, 2014. Doi: https://doi.org/10.1016/j.techfore.2013.12.010
RAUD, M.; TUTT, M.; OLT, J.; KIKAS, T. Dependence of the Hydrolysis Efficiency on the Lignin Content in Lignocellulosic Material. International Journal of Hydrogen Energy, Oxford, v. 41, n. 37, p. 16338–16343, 2015. Doi: https://doi.org/10.1016/j.ijhydene.2016.03.190
SANTOS-ROCHA, M. S. R.; SOUZA, R. B. A.; SILVA, G. M.; CRUZ, A. J. G.; ALMEIDA, R. M. R. G. Hydrothermal pretreatment of corn residues for second generation ethanol production. Scientia Plena, [Sergipe], v. 3, p. 1-17, 2017.
SILVEIRA, M. H. L. et al. Current Pretreatment Technologies for the Development of Cellulosic Ethanol Biorefineries. ChemSusChem, Weinheim, v. 8, n. 20, p. 3366–3390, 2015. Doi: http://dx.doi.org/10.1002/cssc. 201500282
SLUITER, A. et al. Determination of structural carbohydrates and lignin in biomass. Colorado: National Renewable Energy Laboratory, 2008. p. 1-16.
SUHARDI, V. S. H.; PRASAI, B.; SAMAHA, D.; BOOPATHY, R. Evaluation of pretreatment methods for lignocellulosic ethanol production from energy cne variety L 79-1002. International Biodeterioration Biodegradation, Barking, v. 85, p. 683-687, 2013. Doi: https://doi.org/10.1016/j.ibiod.2013.03.021
SUN, S.; SUN, S.; CAO, X.; SUN, R. The role of pretreatment in improving the enzymatic hydrolysis of lignocellulosic materials. Bioresource technology, Essex, v. 199, p. 49-58, 2016. Doi: https://doi.org/10.1016/j.biortech.2015.08.061
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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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