Applied Biochemistry and Biotechnology

, Volume 114, Issue 1–3, pp 347–360

Effect of corn stover concentration on rheological characteristics

Session 2—Introduction to Microbial Catalysis and Engineering

DOI: 10.1385/ABAB:114:1-3:347

Cite this article as:
Pimenova, N.V. & Hanley, T.R. Appl Biochem Biotechnol (2004) 114: 347. doi:10.1385/ABAB:114:1-3:347


Corn stover, a well-known example of lignocellulosic biomass, is a potential renewable feed for bioethanol production. Dilute sulfuric acid pretreatment removes hemicellulose and makes the cellulose more susceptible to bacterial digestion. The rheologic properties of corn stover pretreated in such a manner were studied. The Power Law parameters were sensitive to corn stover suspension concentration becoming more non-Newtonian with slope n, ranging from 0.92 to 0.05 between 5 and 30% solids. The Casson and the Power Law models described the experimental data with correlation coefficients ranging from 0.90 to 0.99 and 0.85 to 0.99, respectively. The yield stress predicted by direct data extrapolation and by the Herschel-Bulkley model was similar for each concentration of corn stover tested.

Index Entries

Corn stover rheological measurement shear stress shear rate non-Newtonian fluids Power Law parameters 

Copyright information

© Humana Press Inc. 2004

Authors and Affiliations

  1. 1.Department of Chemical EngineeringUniversity of LouisvilleLouisville
  2. 2.Auburn UniversityAuburn

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