The influence of pH, temperature and hydrolyzate concentration on the removal of volatile and nonvolatile compounds from sugarcane bagasse hemicellulosic hydrolyzate treated with activated charcoal before or after vacuum evaporation



Título del documento: The influence of pH, temperature and hydrolyzate concentration on the removal of volatile and nonvolatile compounds from sugarcane bagasse hemicellulosic hydrolyzate treated with activated charcoal before or after vacuum evaporation
Revista: Brazilian journal of chemical engineering
Base de datos: PERIÓDICA
Número de sistema: 000308784
ISSN: 0104-6632
Autores: 1


2
3
Instituciones: 1Faculdade de Engenharia Quimica de Lorena, Departamento de Biotecnologia, Lorena, Sao Paulo. Brasil
2Universidade de Sao Paulo, Sao Paulo. Brasil
3Instituto Cubano de Investigaciones de los Derivados de la Caña de Azúcar, La Habana. Cuba
Año:
Periodo: Sep
Volumen: 18
Número: 3
Paginación: 299-311
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés This paper analyzes the influence of pH, temperature and degree of hydrolyzate concentration on the removal of volatile and nonvolatile compounds from sugarcane bagasse hemicellulosic hydrolyzate treated with activated charcoal before or after the vacuum evaporation process. Furfural and 5-Hydroxymethylfurfural were almost totally removed in all the experiments, irrespective of pH and temperature and whether the charcoal was added before or after the vacuum evaporation process. Adding activated charcoal before the vacuum evaporation process favored the removal of phenolic compounds for all values of pH. Acetic acid, on the contrary, was most effectively removed when the activated charcoal was added after the vacuum evaporation process at an acid pH (0.92) and at the highest degree of hydrolyzate concentration (f=4). However, addition of activated charcoal before or after vacuum evaporation at an acid pH (0.92) and at the highest degree of hydrolyzate concentration (f=4) favored the removal of both acetic acid and phenolic compounds
Disciplinas: Química
Palabras clave: Ingeniería química,
Biotecnología,
Bagazo de caña,
Hidrolizado hemicelulósico,
Evaporación por vacío,
Carbón activado,
Acido acético,
Compuestos fenólicos
Keyword: Chemistry,
Chemical engineering,
Biotechnology,
Sugarcane bagasse,
Hemicellulosic hydrolyzate,
Vacuum evaporation,
Activated carbon,
Acetic acid,
Phenolic compounds
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