Measurement of Porosity in Dilute Acid Pretreated Corn Stover

Claudia Ishizawa, Mark Davis, David K. Johnson

Research output: Contribution to conferencePaperpeer-review


Pretreatment has been established as an essential process to increase the susceptibility of lignocellulosic materials to the action of cellulolytic enzymes. An investigation on the applicability of methods to the study of corn stover after dilute sulfuric acid pretreatment was carried out. The solute exclusion method was successfully validated with four standards of different pore size distribution. However, when the method was used on corn stover, only differences in the accessible pore volume between unpretreated and pretreated corn stover could be detected. Only small differences were observed amongst the pretreated samples that gave ethanol yields of 70-96%, and a poor correlation was found between the accessible volume and cellulose digestibility. This is an abstract of a paper presented ACS Fuel Chemistry Meeting (Washington, DC Fall 2005).

Original languageAmerican English
Number of pages2
StatePublished - 2005
Event230th ACS National Meeting - Washington, D.C.
Duration: 28 Aug 20051 Sep 2005


Conference230th ACS National Meeting
CityWashington, D.C.

NREL Publication Number

  • NREL/CP-510-39375


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