Estimating The Net Energy Balance Of Corn Ethanol
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Estimating The Net Energy Balance Of Corn Ethanol
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Author : Hosein Shapouri
language : en
Publisher:
Release Date : 1995
Estimating The Net Energy Balance Of Corn Ethanol written by Hosein Shapouri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Alcohol as fuel categories.
The Energy Balance Of Corn Ethanol An Update Ethanol
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Author :
language : en
Publisher: DIANE Publishing
Release Date :
The Energy Balance Of Corn Ethanol An Update Ethanol written by and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
The Energy Balance Of Corn Ethanol
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Author :
language : en
Publisher:
Release Date : 2002
The Energy Balance Of Corn Ethanol written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
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 estimates. This study identifies the factors causing this wide variation and develops a more consistent estimate.
2008 Energy Balance For The Corn Ethanol Industry
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Author : H. Shapouri
language : en
Publisher: DIANE Publishing
Release Date : 2011
2008 Energy Balance For The Corn Ethanol Industry written by H. Shapouri and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Technology & Engineering categories.
This is a print on demand edition of a hard to find publication. The Agricultural Resource Management Survey of corn growers for the year 2005 and the 2008 survey of dry mill ethanol plants are used to estimate the net energy balance of corn ethanol. This report measures all conventional fossil fuel energy used in the production of 1 gallon of corn ethanol. The ratio is about 2.3 BTU of ethanol for 1 BTU of energy inputs, when a portion of total energy input is allocated to byproduct, and fossil fuel is used for processing energy. The ratio is somewhat higher for some firms that are partially substituting biomass energy in processing energy. Charts and tables.
Comphrensive Resource Balance For Ethanol Produced From Corn And Sugarcane
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Author : Monia Ben-Khaled
language : en
Publisher:
Release Date : 2010
Comphrensive Resource Balance For Ethanol Produced From Corn And Sugarcane written by Monia Ben-Khaled and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Due to the increase in price of fossil fuels and climate change caused by Greenhouse Gas (GHG) emissions, many countries around the world are trying to produce alternative transportation fuels. Ethanol has emerged as a popular alternative to fossil fuels, especially, in countries such as the U.S. and Brazil. Different feed stocks are being used to produce ethanol, with corn and sugarcane as the major crops currently being converted into ethanol. Ethanol production requires considerable resources. To date energy input has been studied extensively. However, only limited data is available on other resources used, such as water and land, and the environmental degradation due to waste generated and GHG emissions. The primary objective of this study is to estimate the resource balance for ethanol produced from corn and sugarcane in different climatic zones: temperate, dry and tropical for corn, and tropical and dry for sugarcane. The results of the study indicate that ethanol produced from sugarcane uses less or comparable resources compared to ethanol produced from corn. The estimates of Net Energy Value (NEV) for corn ethanol were between -1,656 and 6,305 Btu per gallon, while those of sugarcane ethanol were between 57,606 and 61,319 Btu per gallon for different climatic zones considered in this study. Moreover, the highest estimated water requirements, for dry climate, were 2,650 and 2,050 gallons of water per gallon of ethanol for corn and sugarcane ethanol, respectively. Results for carbon dioxide released to the environment from corn ethanol with respect to fossil fuels show a reduction of 44, 26 and 51 percent for tropical, dry and temperate climate zones, respectively. On the other hand, results show a reduction of 62 and 57 percent for carbon dioxide emissions from ethanol produced from sugarcane in tropical and dry climates, respectively. However, when land use change is accounted for, results indicate a significant increase in carbon dioxide emissions, referred to as carbon debt. Considering the reduction of carbon dioxide emissions resulting from ethanol and the debt amount, the payback time will be very long. Results of this study indicate that if forest is converted into a one cycle cropland, corn ethanol will require a payback period of 300, 672 and 210 years, for tropical, dry and temperate climate zones, respectively. If grassland is converted into cropland, corn ethanol will require a payback period of 112, 242 and 82 years, for tropical, dry and temperate climate zones, respectively. Similarly for sugarcane ethanol, when forests are converted into cropland, the payback period is 102 and 132 years, for tropical and dry climate zones, respectively. If grassland is converted into cropland, the payback period for sugarcane ethanol is 38 and 50 years, for tropical and dry climate zones, respectively. In addition, each gallon of corn ethanol requires about 156, 206 and 135 square feet of land for tropical, dry and temperate climates, respectively. Sugarcane ethanol requires about 75 and 91 square feet for tropical and dry climates, respectively. In addition to carbon dioxide emissions, fertilizers are released to the environment. Results of this study indicate that for corn ethanol, fertilizers released to the environment as surface runoff for nitrogen are estimated as 9,072, 12,247 and 8, 618 milligrams per gallon of ethanol for tropical, dry, and temperate climate zones, respectively. Similarly, for phosphate results were 3,629, 5,897 and 2,268 milligrams per gallon of ethanol for temperate, dry, and tropical climates. As for sugarcane ethanol, results for fertilizers surface runoff are estimated as 908 milligrams per gallon of ethanol for nitrogen, for tropical and dry climate zones, and 4,082 and 4,990 milligrams per gallon of ethanol for phosphate, for tropical and dry climate zones, respectively.
Energy Balances In The Production And End Use Of Alcohols Derived From Biomass
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Author : TRW Energy Systems Group. Energy Systems Planning Division
language : en
Publisher:
Release Date : 1980
Energy Balances In The Production And End Use Of Alcohols Derived From Biomass written by TRW Energy Systems Group. Energy Systems Planning Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Alcohol as fuel categories.
The Energy Balance Of Corn Ethanol
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Author : Hosein Shapouri
language : en
Publisher:
Release Date : 2002
The Energy Balance Of Corn Ethanol written by Hosein Shapouri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Alcohol as fuel categories.
Issue Brief
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Author : American Coalition for Ethanol
language : en
Publisher:
Release Date : 2004
Issue Brief written by American Coalition for Ethanol and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Alcohol as fuel categories.
The Energy Balance Of Corn Ethanol
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Author : Us Department of Agriculture
language : en
Publisher:
Release Date : 2015-02-16
The Energy Balance Of Corn Ethanol written by Us Department of Agriculture and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-02-16 with categories.
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Biomass Based Alcohol Fuels
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Author : W. Park
language : en
Publisher:
Release Date : 1978
Biomass Based Alcohol Fuels written by W. Park and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Alcohol as fuel categories.