Systematic evaluation of the relationship between the composition of lignocellulosic biomass and the quality of its pretreatment

Nowadays, there has been a great interest in integrating lignocellulosic biomass as a raw material in the biotechnological processes. From this, the pretreatment stage has been identified as the bottleneck. Therefore, different pretreatment technologies have been established. However, their choice has been directly related to patterns of behavior observed in the literature. In some cases, separating the basis of the technologies and the differences in the composition of lignocellulosic materials. In the development of this work, a strategy was proposed to systematically evaluate the choice of the existing pretreatments based on the composition of lignocellulosic biomass. The development of this was based on the review of the pretreatments applied to nine lignocellulosic materials (i.e. Miscanthus, eucalyptus, pine, rice husk, sugarcane bagasse, oil palm empty fruit bunch, corn stover, rice and wheat straw). The selected strategy was verified experimentally with the use of two lignocellulosic materials from the plantation of the coffee and oil palm of the country, known as Coffee cut-stems (CCS) and Oil Palm Rachis (OPR). Its composition and the strategy helped to identify the pretreatments and conditions that were helpful in the disruption of the lignocellulosic matrix. Then, the pretreatments identified were diluted acid, alkaline, ultrasound and liquid hot water. The results allow observing that in the case of hardwoods such as Coffee cut-stems the conditions evaluated leads recover the sugars presents in the lignocellulosic structure. However, with materials with a low lignin content such as OPR, it is necessary to involve or consider the effect of cellulose crystallinity (Texto tomado de la fuente)

• Autores: Chacón Pérez, Yessica
• Fecha de publicación: 2018
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/66413
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/66413; http://bdigital.unal.edu.co/67438/
• Palabra clave: 6 Tecnología (ciencias aplicadas) / Technology; 62 Ingeniería y operaciones afines / Engineering; 66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering; Composición de la biomasa lignocelulósica; Redistribución de la composición; Digestibilidad enzimática; Factor de severidad; Rendimiento de azúcares; Remoción de componentes; XRD; Composition of lignocellulosic biomass; Redistribution in the composition; Enzymatic digestibility; Severity factor; Sugar yields; Components removal
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional