title: Fuzzy logic feedback control for fed-batch enzymatic hydrolysis of lignocellulosic biomass.
abstract: A fuzzy logic feedback control system was developed for process monitoring and feeding control in fed-batch enzymatic hydrolysis of a lignocellulosic biomass, dilute acid-pretreated corn stover. Digested glucose from hydrolysis reaction was assigned as input while doser feeding time and speed of pretreated biomass were responses from fuzzy logic control system. Membership functions for these three variables and rule-base were created based on batch hydrolysis data. The system response was first tested in LabVIEW environment then the performance was evaluated through real-time hydrolysis reaction. The feeding operations were determined timely by fuzzy logic control system and efficient responses were shown to plateau phases during hydrolysis. Feeding of proper amount of cellulose and maintaining solids content was well balanced. Fuzzy logic proved to be a robust and effective online feeding control tool for fed-batch enzymatic hydrolysis.
authors.affiliation: Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA.
authors.forename: Chao
authors.initials: C
authors.lastname: Tai
authors.affiliation: Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA.|Rural Engineering Department, College of Agricultural Sciences, São Paulo State University, Botucatu, SP, 18610-307, Brazil.
authors.forename: Diego S
authors.initials: DS
authors.lastname: Voltan
authors.affiliation: Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA. dkeshwani2@unl.edu.
authors.forename: Deepak R
authors.initials: DR
authors.lastname: Keshwani
authors.affiliation: Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA.
authors.forename: George E
authors.initials: GE
authors.lastname: Meyer
authors.affiliation: Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA.
authors.forename: Pankaj S
authors.initials: PS
authors.lastname: Kuhar
mesh_terms: D018533:Biomass; D002480:Cellulase / Q000378:metabolism*; D017143:Fuzzy Logic; D006868:Hydrolysis; D008031:Lignin / Q000378:metabolism*
chemical_list: C036909:lignocellulose; D008031:Lignin; D002480:Cellulase
keywords: Bioconversion; Biofuels; Enzymatic hydrolysis; Feedback control; Fuzzy logic