title: Kinetic study of empty fruit bunch using hot liquid water and dilute acid.
abstract: Empty fruit bunch (EFB), a residual product of the palm plantation, is an attractive biomass for biorefinery. As xylan is susceptible to high temperature pretreatment, it is important to setup a proper pretreatment condition to maximize the sugar recovery from EFB. Kinetic parameters of mathematical models were obtained in order to predict the concentration of xylose, glucose, furfural, and acetic acid in the hydrolysate and to find production conditions of xylose. We investigated the kinetics of hot liquid water and dilute sulfuric acid hydrolysis over a 40-min period using a self-designed setup by measuring the concentrations of released sugars (xylose, glucose) and degradation products (acetic acid and furfural). The reaction was performed within the range 160∼180 °C, under reaction conditions of various concentration of sulfuric acid (0.1∼0.2%) and 1:7 solid-liquid ratio in a batch reactor. The kinetic constants can be expressed by the Arrhenius equation with the activation energy for the hydrolysis of sugar and decomposition of sugar. The activation energy of xylose was determined to be 136.2187 kJ mol(-1).
authors.affiliation: Department of Chemical Engineering, Kyonggi University, Suwon 443-760, South Korea.
authors.forename: Jun Seok
authors.initials: JS
authors.lastname: Kim
authors.forename: Won Il
authors.initials: WI
authors.lastname: Choi
authors.forename: Minsu
authors.initials: M
authors.lastname: Kang
authors.forename: Ji Yeon
authors.initials: JY
authors.lastname: Park
authors.forename: Jin-Suk
authors.initials: JS
authors.lastname: Lee
mesh_terms: D019342:Acetic Acid / Q000737:chemistry; D028023:Arecaceae / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D005662:Furaldehyde / Q000737:chemistry; D005947:Glucose / Q000737:chemistry; D006358:Hot Temperature; D007700:Kinetics; D013056:Spectrophotometry, Ultraviolet; D013464:Sulfuric Acids / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D013464:Sulfuric Acids; D014867:Water; D005662:Furaldehyde; D005947:Glucose; C033158:sulfuric acid; D019342:Acetic Acid