title: Enzyme hydrolysis kinetics of micro-grinded maize straws.
abstract: This study applied micro-grinding to disintegrate the maize straws and then use the micro-grinded straws of particle sizes particle size 53-61, 80-96 or 150-180μm, for subsequent enzyme hydrolysis tests. The reducing sugar productivity was increased with reducing particle size. A kinetic model considering product inhibition was developed as follows t=aln[S]0[S]0-[P]+b[P], where S, P and t are the substrate, enzyme and hydrolysis time, respectively, and a and b are fitting parameters. The initial substrate concentration is proportional to the total exposed surface area. Additionally, the mechanical grinding can increase the biomass affinity for enzyme attack, suggesting the enhanced local action of shearing on the fiber matrix surfaces. The enhanced hydrolysis efficiency of the micro-grinded straws is welcomed by the subsequent refinery steps.
authors.affiliation: Collaborative Innovation Center of Biomass Energy, Henan Agriculture University, Henan Province, Zhengzhou 450002, China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Hu
authors.affiliation: Collaborative Innovation Center of Biomass Energy, Henan Agriculture University, Henan Province, Zhengzhou 450002, China.
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Jing
authors.affiliation: Collaborative Innovation Center of Biomass Energy, Henan Agriculture University, Henan Province, Zhengzhou 450002, China.
authors.forename: Quanguo
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Collaborative Innovation Center of Biomass Energy, Henan Agriculture University, Henan Province, Zhengzhou 450002, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Guo
authors.affiliation: Collaborative Innovation Center of Biomass Energy, Henan Agriculture University, Henan Province, Zhengzhou 450002, China; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan. Electronic address: djlee@ntu.edu.tw.
authors.forename: Duu-Jong
authors.initials: DJ
authors.lastname: Lee
mesh_terms: D018533:Biomass; D006868:Hydrolysis; D007700:Kinetics; D010316:Particle Size; D003313:Zea mays
keywords: Enzyme hydrolysis; Micro-grinding; Model; Straws