Document Detail


An engineering and economic evaluation of quick germ-quick fiber process for dry-grind ethanol facilities: analysis.
MedLine Citation:
PMID:  20207536     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
An engineering economic model, which is mass balanced and compositionally driven, was developed to compare the conventional corn dry-grind process and the pre-fractionation process called quick germ-quick fiber (QQ). In this model, documented in a companion article, the distillers dried grains with solubles (DDGS) price was linked with its protein and fiber content as well as with the long-term average relationship with the corn price. The detailed economic analysis showed that the QQ plant retrofitted from conventional dry-grind ethanol plant reduces the manufacturing cost of ethanol by 13.5 cent/gallon and has net present value of nearly $4 million greater than the conventional dry-grind plant at an interest rate of 4% in 15years. Ethanol and feedstock price sensitivity analysis showed that the QQ plant gains more profits when ethanol price increases than conventional dry-grind ethanol plant. An optimistic analysis of the QQ process suggests that the greater value of the modified DDGS would provide greater resistance to fluctuations in corn price for QQ facilities. This model can be used to provide decision support for ethanol producers.
Authors:
Luis F Rodríguez; Changying Li; Madhu Khanna; Aslihan D Spaulding; Tao Lin; Steven R Eckhoff
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-03-06
Journal Detail:
Title:  Bioresource technology     Volume:  101     ISSN:  1873-2976     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-04-12     Completed Date:  2010-11-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  5282-9     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2010 Elsevier Ltd. All rights reserved.
Affiliation:
Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, 376C Agricultural Engineering Sciences Building, MC-644, 1304 West Pennsylvania Avenue, Urbana, IL 61801, United States. lfr@illinois.edu
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MeSH Terms
Descriptor/Qualifier:
Animal Feed
Bioelectric Energy Sources / economics*
Biotechnology / economics,  methods
Costs and Cost Analysis
Equipment Design
Ethanol / chemistry*
Fermentation*
Models, Economic
Zea mays / economics
Chemical
Reg. No./Substance:
64-17-5/Ethanol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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