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Abstract:

The structural complexity of the lignocellulosic materials hinders enzymatic hydrolysis for what their conversion to bioethanol requires a pretreatment step. The aim of this work was to optimize the pretreatment of rice hulls with diluted acid. A Central Composite Design (CCD) was used to obtain regression equations in function of the variables: acid concentration and heating time. Optimal conditions were obtained by the Desirability function. As a strategy to obtain the best solid material for the production of ethanol by fermentation minimizing sugars degradation, the optimization of the pretreatments was performed following three scenarios. The optimum was established as the conditions that maximize glucans in the solid and xylose in the liquid (0.3% (w/v) of sulfuric acid and a 33. min). The pretreated rice hull in those conditions was treated enzymatically. The performance of the enzymatic hydrolysis was about 50% (25% of total sugars present) over a period of 48. h of reaction, and the efficiency of conversion of dissolved sugars to bioethanol was of 84%. © 2012 Elsevier B.V.

Registro:

Documento: Artículo
Título:Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production
Autor:Dagnino, E.P.; Chamorro, E.R.; Romano, S.D.; Felissia, F.E.; Area, M.C.
Filiación:Grupo UTN de Investigación en Química Orgánica Biológica (QUIMOBI), Facultad Regional Resistencia (FRRe), Universidad Tecnológica Nacional (UTN), French 414, 3500 Resistencia, Argentina
Grupo de Energías Renovables (GER), Facultad de Ingeniería (FI), Universidad de Buenos Aires (UBA), Paseo Colón 850, C1063ACV Capital Federal, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, 1033 Capital Federal, Argentina
Programa de Celulosa y Papel (PROCYP), Facultad de Ciencias Exactas, Químicas y Naturales (FCEYN), Universidad Nacional de Misiones (UNaM), Félix de Azara 1552, 3300 Posadas, Argentina
Idioma: Inglés
Palabras clave:Bioethanol; Optimization; Pretreatment; Rice hulls; Acid concentrations; Acid pretreatment; Bio-ethanol production; Central composite designs; Desirability function; Fermentable sugars; Glucans; Heating time; Lignocellulosic material; Optimal conditions; Pre-Treatment; Pre-treatments; Regression equation; Rice hulls; Solid material; Structural complexity; Bioethanol; Degradation; Enzymatic hydrolysis; Ethanol; Optimization; Sugars; Sulfuric acid; biofuel; biomass power; complexity; enzyme activity; fermentation; heating; hydrolysis; optimization; rice; straw; sugar; sulfuric acid
Año:2013
Volumen:42
Número:1
Página de inicio:363
Página de fin:368
DOI: http://dx.doi.org/10.1016/j.indcrop.2012.06.019
Título revista:Industrial Crops and Products
Título revista abreviado:Ind. Crops Prod.
ISSN:09266690
CODEN:ICRDE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09266690_v42_n1_p363_Dagnino

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Citas:

---------- APA ----------
Dagnino, E.P., Chamorro, E.R., Romano, S.D., Felissia, F.E. & Area, M.C. (2013) . Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production. Industrial Crops and Products, 42(1), 363-368.
http://dx.doi.org/10.1016/j.indcrop.2012.06.019
---------- CHICAGO ----------
Dagnino, E.P., Chamorro, E.R., Romano, S.D., Felissia, F.E., Area, M.C. "Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production" . Industrial Crops and Products 42, no. 1 (2013) : 363-368.
http://dx.doi.org/10.1016/j.indcrop.2012.06.019
---------- MLA ----------
Dagnino, E.P., Chamorro, E.R., Romano, S.D., Felissia, F.E., Area, M.C. "Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production" . Industrial Crops and Products, vol. 42, no. 1, 2013, pp. 363-368.
http://dx.doi.org/10.1016/j.indcrop.2012.06.019
---------- VANCOUVER ----------
Dagnino, E.P., Chamorro, E.R., Romano, S.D., Felissia, F.E., Area, M.C. Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production. Ind. Crops Prod. 2013;42(1):363-368.
http://dx.doi.org/10.1016/j.indcrop.2012.06.019