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- Title
Evaluación de pretratamientos químicos sobre materiales lignocelulósicos.
- Authors
Torres Jaramillo, Diana; Morales Vélez, Sonia Patricia; Quintero Díaz, Juan Carlos
- Abstract
The efficiency in ethanol production from lignocellulosic materials depends on high grade on the degree of lignin removal. Lignin presence limits cellulose hydrolysis and fermentation. In this work, was determined the effect of different chemical pretreatments on chemical composition and crystallinity on the lignocellulosic materials, wood chips, cane bagasse, and rice husks. Pretreatments evaluated were carried out applying sulfuric acid or sodium hydroxide or their combination over each material. The combined pretreatment allowed to obtain the highest lignine removal. For cane bagasse it was obtained an 80.6% of lignine removal, while for wood chip and rice husks lignine was removed in 46.7%. However one important cellulose loss of 30.7% was observed from bagasse cane and 15.8% from rice husks. DRX analysis showed an increase in the crystallinity for wood chip and cane bagasse.
- Subjects
LIGNOCELLULOSE; BAGASSE; RICE hulls; WOOD chips; X-ray diffraction; ETHANOL
- Publication
INGENIARE - Revista Chilena de Ingeniería, 2017, Vol 25, Issue 4, p733
- ISSN
0718-3291
- Publication type
Article