An engineering and economic evaluation of quick germ-quick fiber process for dry-grind ethanol facilities: Analysis

Luis F. Rodríguez; Changying Li; Madhu Khanna; Aslihan D. Spaulding; Tao Lin; Steven R. Eckhoff

doi:10.1016/j.biortech.2010.01.140

An engineering and economic evaluation of quick germ-quick fiber process for dry-grind ethanol facilities: Analysis

Luis F. Rodríguez, Changying Li, Madhu Khanna, Aslihan D. Spaulding, Tao Lin, Steven R. Eckhoff

Agricultural Economics

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

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 ¢/gallon and has net present value of nearly $4 million greater than the conventional dry-grind plant at an interest rate of 4% in 15 years. 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.

Original language	English
Pages (from-to)	5282-5289
Number of pages	8
Journal	Bioresource Technology
Volume	101
Issue number	14
DOIs	https://doi.org/10.1016/j.biortech.2010.01.140
State	Published - Jul 2010

Funding

The authors would like to thank Mr. Xiaoguang Chen and Ms. Raffaella Bottini for their assistance on analyzing and updating the data. This work was partially funded by the Illinois Council on Food and Agricultural Research (C-FAR) and USDA CSREES through hatch project #ILLU-741-342 (NC Regional Project 1016).

Funders	Funder number
C-FAR
Illinois Council on Food and Agricultural Research
USDA-CSREES	-741-342

Keywords

Bioenergy
Dry-grind process
Engineering economic model
Ethanol
Quick germ-quick fiber process

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2010.01.140

Cite this

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title = "An engineering and economic evaluation of quick germ-quick fiber process for dry-grind ethanol facilities: Analysis",

abstract = "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 ¢/gallon and has net present value of nearly \$4 million greater than the conventional dry-grind plant at an interest rate of 4\% in 15 years. 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.",

keywords = "Bioenergy, Dry-grind process, Engineering economic model, Ethanol, Quick germ-quick fiber process",

author = "Rodr{\'i}guez, \{Luis F.\} and Changying Li and Madhu Khanna and Spaulding, \{Aslihan D.\} and Tao Lin and Eckhoff, \{Steven R.\}",

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AU - Li, Changying

AU - Khanna, Madhu

AU - Spaulding, Aslihan D.

AU - Lin, Tao

AU - Eckhoff, Steven R.

PY - 2010/7

Y1 - 2010/7

N2 - 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 ¢/gallon and has net present value of nearly $4 million greater than the conventional dry-grind plant at an interest rate of 4% in 15 years. 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.

AB - 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 ¢/gallon and has net present value of nearly $4 million greater than the conventional dry-grind plant at an interest rate of 4% in 15 years. 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.

KW - Bioenergy

KW - Dry-grind process

KW - Engineering economic model

KW - Ethanol

KW - Quick germ-quick fiber process

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An engineering and economic evaluation of quick germ-quick fiber process for dry-grind ethanol facilities: Analysis

Abstract

Funding

Keywords

ASJC Scopus subject areas

UN SDGs

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