Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production
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 reg...
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | JOUR |
| Lenguaje: | English |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_09266690_v42_n1_p363_Dagnino |
| Aporte de: |
| id |
todo:paper_09266690_v42_n1_p363_Dagnino |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_09266690_v42_n1_p363_Dagnino2023-10-03T15:46:39Z Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production Dagnino, E.P. Chamorro, E.R. Romano, S.D. Felissia, F.E. Area, M.C. 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 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. JOUR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09266690_v42_n1_p363_Dagnino |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| language |
English |
| orig_language_str_mv |
English |
| topic |
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 |
| spellingShingle |
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 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 |
| topic_facet |
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 |
| description |
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. |
| format |
JOUR |
| author |
Dagnino, E.P. Chamorro, E.R. Romano, S.D. Felissia, F.E. Area, M.C. |
| author_facet |
Dagnino, E.P. Chamorro, E.R. Romano, S.D. Felissia, F.E. Area, M.C. |
| author_sort |
Dagnino, E.P. |
| title |
Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production |
| title_short |
Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production |
| title_full |
Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production |
| title_fullStr |
Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production |
| title_full_unstemmed |
Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production |
| title_sort |
optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production |
| url |
http://hdl.handle.net/20.500.12110/paper_09266690_v42_n1_p363_Dagnino |
| work_keys_str_mv |
AT dagninoep optimizationoftheacidpretreatmentofricehullstoobtainfermentablesugarsforbioethanolproduction AT chamorroer optimizationoftheacidpretreatmentofricehullstoobtainfermentablesugarsforbioethanolproduction AT romanosd optimizationoftheacidpretreatmentofricehullstoobtainfermentablesugarsforbioethanolproduction AT felissiafe optimizationoftheacidpretreatmentofricehullstoobtainfermentablesugarsforbioethanolproduction AT areamc optimizationoftheacidpretreatmentofricehullstoobtainfermentablesugarsforbioethanolproduction |
| _version_ |
1807321169294000128 |