The Energy Balance of Corn Ethanol: An Update
- H. Shapouri, J. Duffield, Michael Q. Wang
- Economics
- 1 July 2002
Studies conducted since the late 1970s have estimated the net energy value (NEV) of corn ethanol. However, variations in data and assumptions used among the studies have resulted in a wide range of…
Life Cycle Inventory of Biodiesel and Petroleum Diesel for Use in an Urban Bus
- J. Sheehan, V. Camobreco, J. Duffield, M. Graboski, H. Shapouri
- Environmental Science
- 1 May 1998
This report presents the findings from a study of the life cycle inventories (LCIs) for petroleum diesel and biodiesel. An LCI is a comprehensive quantification of all the energy and environmental…
Life cycle inventory of biodiesel and petroleum diesel for use in an urban bus. Final report
- J. Sheehan, V. Camobreco, J. Duffield, M. Graboski, H. Shapouri
- Engineering
- 1 May 1998
This report presents the findings from a study of the life cycle inventories for petroleum diesel and biodiesel. It presents information on raw materials extracted from the environment, energy…
Estimating the net energy balance of corn ethanol. Agricultural economic report
- H. Shapouri, J. Duffield, M. Graboski
- Economics
- 1 November 1995
Studies conducted since the late 1970's have estimated the net energy value of corn ethanol. However, variations in data and assumptions used among the studies have resulted in a wide range of…
An Overview of Biodiesel and Petroleum Diesel Life Cycles
- J. Sheehan, V. Camobreco, J. Duffield, H. Shapouri, M. Graboski, K. Tyson
- Engineering
- 27 April 2000
This report presents the findings from a study of the life cycle inventories for petroleum diesel and biodiesel. It presents information on raw materials extracted from the environment, energy…
THE ENERGY BALANCE OF CORN ETHANOL REVISITED
- H. Shapouri, J. Duffield, Michael Q. Wang
- Economics
- 2003
Studies conducted since the late 1970s have estimated the net energy value (NEV) of corn ethanol. However,
variations in data and assumptions used among the studies have resulted in a wide range of…
Energy Life-Cycle Assessment of Soybean Biodiesel
- A. Pradhan, D. S. Shrestha, H. Shapouri
- Environmental Science
- 1 September 2009
The first comprehensive life-cycle inventory (LCI) for biodiesel produced in the United States from soybean oil was completed by Sheehan et al. in 1998. The purpose of the study was to conduct a…
Energy Life-Cycle Assessment of Soybean Biodiesel Revisited
- A. Pradhan, D. S. Shrestha, A. McAloon, W. Yee, M. Haas, J. Duffield
- Engineering
- 1 May 2011
The first comprehensive life-cycle assessment (LCA) for soybean biodiesel produced in the U.S. was completed by the National Renewable Energy Laboratory (NREL) in 1998, and the energy inventory for…
The Energy Balance of Soybean Oil Biodiesel Production: A Review of Past Studies
- A. Pradhan, D. S. Shrestha, J. V. Gerpen, J. Duffield
- Engineering
- 2008
Although several studies have found biodiesel to be a renewable source of energy, there has been a claim that it is not. This article investigates models used to calculate the net energy ratio (NER)…
U.S. Biodiesel Development: New Markets for Conventional and Genetically Modified Agricultural Products
- J. Duffield, H. Shapouri, M. Graboski, R. McCormick, Richard Wilson
- Engineering, Environmental Science
- 1 September 1998
With environmental and energy source concerns on the rise, using agricultural fats and oils as fuel in diesel engines has captured increasing attention. Substituting petroleum diesel with biodiesel…
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