PURIFICACIÓN DE HIDROLIZADO DE BAGAZO DE CAÑA DE AZÚCAR CON CARBÓN ACTIVADO Y RESINAS DE INTERCAMBIO IÓNICO PURIFICATION OF SUGARCANE BAGASSE HYDROLYSATES USING ACTIVATED CHARCOAL AND ION-EXCHANGE RESINS
Open Access
- 1 July 2006
- journal article
- research article
- Published by Taylor & Francis Ltd in Ciencia y Tecnologia Alimentaria
- Vol. 5 (2), 124-128
- https://doi.org/10.1080/11358120609487682
Abstract
Resumen In the present work, the bagasse hydrolysis was done in a 100 L batch digester constructed of stainless steel, by treatment with sulphuric acid diluted under moderate temperature and pressure so that the hemicellulose present in the material vegetable is solubilized to obtain a hydrolizate rich in xylose and with small quantities of glucose and arabinose. Along with the sugar are extracted toxic compounds as furfural, acetic acid and compounds that are harmful to the process of catalytic hydrogenation of xylose to xylitol. The goal of this work was to study the purification of sugarcane bagasse hemicellulosic hydrolysated by two methods: activated charcoal and ion-exchange resins. The most effective treatment was the one accomplished employing ion-exchange resins in which was possible to remove approximately 80.9 % of acetic acid, 100 % of phenols groups and 99.7 % of colour. En el presente trabajo, la hidrólisis del bagazo se realizó en un reactor de acero inoxidable de 100 L de capacidad, por tratamiento con ácido sulfúrico a 140±5°C de temperatura, durante 25 min, para garantizar que las hemicelulosas presentes en el material vegetal se solubilizaran obteniéndose un hidrolizado rico en xilosa y con pequeñas cantidades de glucosa y arabinosa. Conjuntamente con los azúcares, son extraídos compuestos tóxicos como furfural, ácido acético y compuestos fenólicos que son nocivos al proceso de hidrogenación catalítica de la xilosa a xilitol. El objetivo del trabajo fue estudiar la purificación de hidrolizados hemicelulósicos de bagazo de la caña de azúcar por diferentes métodos: carbón activado y resinas de intercambio iónico. El tratamiento más efectivo fue el realizado empleando resinas de intercambio iónico en el que se logró remover aproximadamente un 80,9 % de ácido acético, 100 % de los grupos fenólicos y 99,7 % de color. Palabras clave: hidrolizado hemicelulósico, caña azúcar, resina intercambio iónico, carbón activadoKeywords
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