Development of a Controller for Fermentation in the Dry Grind Corn Process

The controller maintained glucose concentration of <2.0% w/v in the fermenter throughout the SSF process. Reduced glucose concentrations minimize the osmotic shock to yeast and inhibit the growth of other competing microorganisms. Use of the optimal controller resulted in 50% reduction in glucoamylase amount required for the SSF process under varying operating conditions as compared to the standard SSF process. Optimal controller significantly improved final ethanol concentrations as compared to the conventional process without optimal controller under conditions of temperature and pH disturbances. Use of the optimal controller in conventional dry grind ethanol processes can result in estimated cost savings up to $1 million for a 151 million L/yr (40 million gal/yr) dry grind plant.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Agricultural Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Murthy, Ganti Suryanarayana

Contributors dc:contributor

• Singh, Vijay

• Engineering, Agricultural

Language dc:language

eng

Identifier

(MiAaPQ)AAI3250299

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/86066