ethanol has been extensively investigated in life cycle assess-ment(LCA) studies,mainly from a transport bio-fuel perspec-tive (Fu et al. 2003; Nguyen and Gheewala 2008a, b;Ometto et al. 2009). However, very often the literature is focused on theassessmentofgreenhousegas(GHG)emissionsonly(Kim and Dale 2009; Silalertruksa and Gheewala 2011;Laborde

Energy used in the conversion of corn to ethanol includes transportation of grain to the biorefinery, grain milling, starch liquefaction and hydrolysis, fermentation to biofuel, and coproduct processing and transport.

Corn ethanol is ethanol produced from corn biomass and is the main source of ethanol fuel in the United States. Corn ethanol is produced by ethanol fermentation and distillation. It is debatable whether the production and use of corn ethanol results in lower greenhouse gas emissions than gasoline. Corn (Zea Mays) is a popular feedstock for ethanol production in the United States due to its abundance and relative ease of conversion to ethyl alcohol (ethanol). Corn and other high starch grains have been converted into ethanol for thousands of years, yet only in the past century has its use as fuel greatly expanded. A life-cycle assessment (LCA) of corn ethanol was conducted to determine the reduction in the life-cycle greenhouse gas (GHG) emissions of corn ethanol compared to gasoline by integrating biomass fuels in a 190 million liter (50 million gallon) per year dry-grind corn ethanol plant to replace fossil fuels (natural gas and grid electricity).

Corn ethanol lca

als [a combination of wet-milling corn grain and corn stover in the case of Kim and Dale (2005)] compared with gasoline. Luo et al. (2009) used energy, mass, and economic allocation in an LCA to assess corn stover ethanol production and reported that replacing gaso-line with ethanol reduces the levels of numerous The calculated emissions across models ranged from 16 to 45 for sugarcane, 43–62 for corn, and 45–68 g CO 2 eq MJ −1 for wheat ethanol. Harmonizing the three public models with VSB assumptions for sugarcane ethanol produced in Brazil, the range was reduced to 16–17 g CO 2 eq MJ −1 for sugarcane ethanol. LCA FOR RENEWABLE RESOURCES Life cycle assessment of bio-based ethanol produced from different agricultural feedstocks Ivan Muñoz & Karin Flury & Niels Jungbluth & Giles Rigarlsford & Llorenç Milà i Canals & Henry King Received: 3 August 2012 /Accepted: 11 June 2013 # Springer-Verlag Berlin Heidelberg 2013 Abstract While this LCA was on greenhouse gas emissions and not the energy gains/losses from producing ethanol, the calculation does show that even if you look 30 or 100 years into the future, the benefits of corn ethanol over gasoline depend highly on the production method (some methods actually increase emissions relative to gasoline). Allocation Issues in LCA Methodology: A Case Study of Corn Stover-Based Fuel Ethanol Larry Santos AbstractFacing the threat of oil depletion and climate change, a shift from fossil resources to renewables is ongoing to secure long-term low carbon energy supplies.

av M Henriksson · 2014 · Citerat av 6 — The methodology used was Life Cycle Assessment with the system by-product dried distiller's grain from national ethanol production. emission at low temperatures from manure-amended soils under corn (Zea mays L.).

1). Phase 2, objective b: Comparison of LCA models for biochemical second-generation (2G) ethanol 7.1. Harmonization of corn stover ethanol production Allocation Issues in LCA Methodology: A Case Study of Corn Stover-Based Fuel Ethanol Larry Santos AbstractFacing the threat of oil depletion and climate change, a shift from fossil resources to renewables is ongoing to secure long-term low carbon energy supplies. to the corn cultivation, and fossil fuels consumption.

GREET life-cycle GHG emissions of ethanol: feedstock is the main driver 9 95 57 32 8 11 -4-150-100-50 0 50 100 150 With LUC Without LUC With LUC With LUC With LUC Gasoline Corn ethanol Sugarcane ethanol Corn stover ethanol Switchgrass ethanol Miscanthus ethanol CO 2 e/MJ WTP Biogenic CO₂in Fuel PTW LUC WTW

LCA. Pisum sativum Tolman GH (1995) Effect of hot aqueous ethanol treatment on anti-nutritional factors, mans: a comparison with corn-oil. Eur J Clin Nutr CHEMINFO (2008) Sensitivity Analysis of Bioethanol LCA Models to Smith F B, (2007) Corn-based Ethanol: A Case Study in the Law of ECOLOGICAL FOOTPRINT ANALYSIS OF CANNED SWEET CORN that can facilitate such a goal are life cycle assessment (LCA) and eco- logical footprint (EF). ethanol en elektriciteit, deze worden geproduceerd met huidige processen. därför inte kunnat fā fram LCA data som underlag för beräkning. Pimentel, D., and T. W. Patzek. 2005. Ethanol.

2014. January 2014. Prepared by: Susan Boland.
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com/workshops/LCA October 2009/Session 5/5-Arora, Salil. The ICF literature review on fuel production emissions starts with a statement that “Recent LCA literature has shown that corn ethanol production accounts for over Dec 7, 2020 Some ethanol producers burn coal and natural gas for heat sources in the fermentation process to make fuel ethanol, while some burn corn We conducted a life-cycle assessment (LCA) of ethanol production via bioconversion of willow The model is a modification of the NREL model for corn-.

We applied both LCA and SWA to assess the GHG impacts of ethanol based on Iowa corn. Growing corn in rotation with soybeans generated 35% less GHG emissions than growing corn after corn.
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cycle assessment (LCA), process modelling with Aspen Plus and case study LCA of ethanol fuel produced from corn ethanol conversion technologies.

Based on these trends, we project life -cycle GHG emissions for corn ethanol in 2022 at 54,588 g CO. 2. 2014-02-15 · They evaluated the degree to which corn ethanol reduces GHG emissions depends on how corn is produced, how corn is processed into ethanol, and what emissions would be without corn ethanol. Kauffman et al. (2011) proposed a LCA on the basis of a hectare of corn, where the corn grain is used for production of ethanol and the corn stover is subjected to fast pyrolysis yielding biochar and bio-oil.

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Corn ethanol’s contribution to this total is explicitly limited, however, since the statute prohibits the use of more than 15 billion gallons of corn ethanol for RFS compliance. The industry already has 15 billion gallons of corn ethanol capacity 42 and can actually produce beyond that level with its existing plants. 43 This leaves little room for corn ethanol growth before hitting the RFS

been implemented. Renewable bio-based fuels such as ethanol and biodiesel are straw and corn stover in China. Environmental model has been coupled to a life cycle analysis (LCA) model for evaluation of global source, such as methanol or ethanol for denitrification, is most relevant as they are energy carriers that one produced from corn in USA. In the USA, gasoline dominates over diesel, and ethanol contributes some 10%. Assessment (LCA) and represents the GHG emissions emitted across the full life refers to the production of cellulosic (such as corn fiber) ethanol integrated. eftersom metoden är enkel så har många LCA-analyser använt IPCC:s emissionsfaktor på 1,25 eller and smallscale production of ethanol for heavy engines under.

Lifecycle assessment(LCA) is a technique which is becoming in- creasingly there is a net increase in GHG emissions from using corn ethanol compared.

Selection of corn ethanol plant type affects LCA results Dry mill (nearly 90% of fleet) Wet mill Process fuel –Natural gas –Coal –Biomass Corn oil extraction Integrated production of corn and stover ethanol 11 Energy used in the conversion of corn to ethanol includes transportation of grain to the biorefinery, grain milling, starch liquefaction and hydrolysis, fermentation to biofuel, and coproduct processing and transport. als [a combination of wet-milling corn grain and corn stover in the case of Kim and Dale (2005)] compared with gasoline. Luo et al.

Int J LCA (2002) OnlineFirst 3 Corn oil is a coproduct in the wet milling process, in which ethanol, corn gluten meal and corn gluten feed are produced as well.