E85

E85
Name	E85
Type	Biofuel blend
Caption	Flexible-fuel vehicle fueling
Density	variable
Boiling point	variable
Energy content	lower than gasoline
Primary use	Internal combustion engines

E85 is a liquid fuel blend commonly used in flexible-fuel vehicles and adapted internal combustion engines. It combines high-percentage ethanol with gasoline components and is deployed in transportation fleets, racing series, and agricultural contexts. E85 interfaces with standards bodies, automotive manufacturers, and energy companies in markets such as the United States, Brazil, and parts of Europe.

Introduction

E85 has been promoted by advocates including Renewable Fuel Association, United States Department of Energy, National Renewable Energy Laboratory, Brazilian Sugarcane Industry Association, and automakers like Ford Motor Company and General Motors. It has been featured in demonstrations at venues such as the International Motor Show Germany, SEMA Show, and collaborations with institutes like Oak Ridge National Laboratory and Argonne National Laboratory. Policymakers from administrations such as the United States Environmental Protection Agency and the European Commission have influenced its market role via mandates and incentives.

Composition and Properties

E85 typically contains ethanol in proportions that vary with season and jurisdiction, with organizations such as ASTM International and ISO informing standards. The ethanol component is often sourced from feedstocks processed by companies and cooperatives including Cargill, Archer-Daniels-Midland Company, Raízen, and BIOsev. Ethanol purity, water tolerance, and denaturants are influenced by production techniques developed at facilities like Iowa State University research centers and corporate labs at Shell plc and BP. Physicochemical properties—octane rating influenced by Research Octane Number conventions, latent heat affected by distillation practices, and vapor pressure managed per EPA regulations—affect cold-start behavior and storage stability. Corrosion concerns involve materials standards referenced by Society of Automotive Engineers and adapters used in vehicles from manufacturers including Toyota Motor Corporation and Volkswagen Group.

Production and Distribution

Ethanol for E85 is produced via fermentation, cellulosic processes, and catalytic conversion in plants owned or operated by entities such as POET LLC, Green Plains Inc., AB Sugar, and research consortia at Massachusetts Institute of Technology and University of California, Davis. Feedstocks include corn in the United States Department of Agriculture-influenced Midwest, sugarcane in Brazil tied to the Proálcool program, and cellulosic residues explored by projects funded by Department of Energy programs. Distribution networks involve terminals and pipelines managed by companies such as Kinder Morgan and retail forecourt partnerships with chains like Shell plc, BP, and Casey’s General Stores. Blending, labeling, and dispensing infrastructure must comply with mandates from regulatory bodies including Federal Highway Administration and state agencies such as the California Air Resources Board.

Vehicle Compatibility and Modifications

Original-equipment manufacturers including Ford Motor Company, General Motors, Chrysler, Mercedes-Benz, Renault, and Peugeot have produced flexible-fuel vehicles with sensors and engine control systems enabling ethanol blends. Conversion kits and aftermarket suppliers have been evaluated by agencies like Environmental Protection Agency and test programs at Argonne National Laboratory for calibration, cold-start enrichment strategies, and fuel-system material compatibility. Modifications often address fuel pump specifications, fuel-line materials guided by standards from Society of Automotive Engineers and electronic control unit maps used in models such as the Ford F-Series and Chevrolet Silverado. Fleet operators including United Parcel Service and municipal services in cities like Los Angeles and São Paulo have deployed adapted vehicles.

Performance, Efficiency, and Emissions

E85’s higher octane rating relative to conventional gasoline allows higher compression ratios and advanced ignition timing exploited in racing series such as NASCAR development programs and rally teams associated with FIA competition. Energy content per liter is lower than petroleum gasoline, influencing fuel economy metrics reported by agencies like the Environmental Protection Agency and academic studies at Stanford University and University of Michigan. Lifecycle greenhouse gas assessments conducted by Intergovernmental Panel on Climate Change-related research and models from Argonne National Laboratory examine feedstock choice, land-use effects considered in analyses by Food and Agriculture Organization and United Nations Environment Programme. Tailpipe emissions profiles, including reductions in certain hydrocarbons and increases in aldehydes, have been measured in tests following protocols from Society of Automotive Engineers and reported to regulators such as California Air Resources Board.

Economics and Policy

Market adoption has been shaped by policies like the Renewable Fuel Standard in the United States, subsidy schemes seen in the Brazilian RenovaBio program, and tariffs negotiated through trade bodies such as the World Trade Organization. Oil companies, ethanol producers, and retailers including ExxonMobil, TotalEnergies, and Shell plc weigh infrastructure investments against mandates from agencies like Internal Revenue Service for tax incentives and credits. Price volatility links to commodity markets tracked by Chicago Board of Trade and policy shifts influenced by legislatures such as the United States Congress and parliaments in Brazil and European Parliament.

Safety and Handling

Safety standards for storage, transport, and dispensing are guided by bodies including National Fire Protection Association, Occupational Safety and Health Administration, and International Maritime Organization. Measures address flammability characteristics, spill response protocols used by emergency services in cities like New York City and Rio de Janeiro, and material compatibility standards applied by manufacturers such as Magellan Midstream Partners. Training programs and labeling requirements reference documents from Centers for Disease Control and Prevention and regional authorities like California Division of Occupational Safety and Health to mitigate risks in retail forecourts and distribution centers.

Category:Biofuels