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Term /Acronym
Entity / Meaning
Definition / Context
SWAFEA
Sustainable Way for Alternative Fuel and Energy in Aviation

European Commission effort that funded an alternative-fuel-for-aviation initiative.

Stranded assets

An asset that is worth less on the market than it is on a balance sheet due to the fact that it has become obsolete in advance of complete depreciation

Supplier

Entity that provides goods or services to a company

Supply Chain

A system of organizations, people, technology, activities, information and resources involved in moving a product or service from supplier to customer

Sustainable Energy

The provision of energy such that it meets the needs of the present without compromising the ability of future generations to meet their needs

Syngas
Synthesis Gas

Syngas is the abbreviation for Synthesis gas. This is a gas mixture that comprises of carbon monoxide, carbon dioxide and hydrogen. The syngas is produced due to the gasification of a carbon containing fuel to a gaseous product that has some heating value

Synthetic Biology

Synthetic biology refers to both the design and fabrication of biological components and systems that do not already exist in the natural world and the re-design and fabrication of existing biological systems. Currently being used by some biofuels companies to convert raw materials into hydrocarbons using biological processes.

Synthetic Fuel

Liquid fuel obtained from non-petroleum feedstocks (coal, natural gas, or biomass)

Synthetic Jet Fuel

A jet fuel derived from non-petroleum sources as defined by ASTM 7566

TAG, TG, triglyceride
Triacylglycerol, triacylglyceride, or triglyceride

The primary constituent of naturally occurring plant and animal oils composed of three fatty acid molecules attached to a single glycerol molecule.

TRB
Transportation Research Board

TRB is one of six major divisions of the National Research Council— a private, nonprofit institution that is the principal operating agency of the National Academies in providing services to the government, the public, and the scientific and engineering communities. The National Research Council is jointly administered by the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The Transportation Research Board engages professionals worldwide in a broad range of interdisciplinary , multimodal activities for innovative transportation solutions.

Tallow

See Animal Oils

Tank Farm

A facility for storage of liquid petroleum products or petrochemicals

Throughput

The rate at which something can be processed, often mass or volume per day or year

UCO (UVO, RVO, WVO, tallow)
Used cooking oil (UCO), used vegetable oil (UVO), recycled vegetable oil (RVO), waste vegetable oil (WVO), or yellow grease

Oil (typically plant oils, but not always) from cooking processes (homes, restaurants, industrial applications) that is discarded/recycled after reaching its useful life. It has subsequent use for animal feed, and the manufacture of soap, make-up, clothes, rubber, and detergents. It is being used as a feedstock for biofuel production. Differs from Brown Grease which is typically recovered from grease traps in sewage treatment facilities, and often contains significant contaminants that make its re-use difficult.

UHCs
Unburned hydrocarbons

Hydrocarbons that are not completely converted to CO2 during the combustion process due to some inefficiency, subsequently considered to be contaminates or particulates in the engine exhaust.

ULS(D)
Ultra Low Sulfur (e.g., Ultra low sulfur diesel)

For diesel, defined as having a maximum 15 parts per million (ppm) sulfur content.

USAF, AF
United States Air Force

The United States Air Force (USAF) is the aerial warfare service branch of the United States Armed Forces.

USDA
United States Department of Agriculture

The U.S. Department of Agriculture is the federal department charged with coordinating and supervising all agencies and functions of the government relating directly to agriculture - providing leadership on food, agriculture, natural resources, rural development, nutrition, and related issues based on sound public policy, the best available science, and efficient management

Uplift / Uptake
The use of fuel onboard an aircraft.

Refers to the concept of loading the fuel onto an aircraft for usage on the next flight. Can be specific in its meaning of how much fuel is loaded onto the aircraft (mass or volume).

WTI
West Texas Intermediate

Also known as Texas Light Sweet, is a type of crude oil used as a benchmark in oil pricing and the underlying commodity of New York Mercantile Exchange's oil futures contracts

Yellow Grease

Yellow Grease is the product produced from the recycling of used cooking oil. It is being used as a feedstock for biodiesel production

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