title: Prediction of acid hydrolysis of lignocellulosic materials in batch and plug flow reactors.
abstract: This study unifies contradictory conclusions reported in literature on acid hydrolysis of lignocellulosic materials, using batch and plug flow reactors, regarding the influence of the initial liquid ratio of acid aqueous solution to solid lignocellulosic material on sugar yield and concentration. The proposed model takes into account the volume change of the reaction media during the hydrolysis process. An error lower than 8% was found between predictions, using a single set of kinetic parameters for several liquid to solid ratios, and reported experimental data for batch and plug flow reactors. For low liquid-solid ratios, the poor wetting and the acid neutralization, due to the ash presented in the solid, will both reduce the sugar yield. Also, this study shows that both reactors are basically equivalent in terms of the influence of the liquid to solid ratio on xylose and glucose yield.
authors.affiliation: Grupo de Investigación en Aplicación de Nuevas Tecnologías, Laboratorio de Intensificación de Procesos y Sistemas Híbridos, Departamento de Ingeniería Química, Facultad de Ingeniería y Arquitectura, Universidad Nacional de Colombia-Sede Manizales, Cra 27 No. 64-60, Manizales, Apartado Aéreo 127, Colombia.
authors.forename: Oscar Johnny
authors.initials: OJ
authors.lastname: Jaramillo
authors.forename: Miguel Ángel
authors.initials: MÁ
authors.lastname: Gómez-García
authors.forename: Javier
authors.initials: J
authors.lastname: Fontalvo
mesh_terms: D000143:Acids / Q000378:metabolism*; D019149:Bioreactors; D006868:Hydrolysis; D008031:Lignin / Q000378:metabolism*
chemical_list: D000143:Acids; C036909:lignocellulose; D008031:Lignin
keywords: Batch reactor; Cellulose hydrolysis; Hemicellulose hydrolysis; Liquid–solid ratio; Plug flow reactor; Sugar yield