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A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

ECBM
Enhanced coal bed methane recovery; the use of CO2 to enhance the recovery of the methane present in unminable coal beds through the preferential adsorption of CO2 on coal.

Economic potential
The amount of greenhouse gas emissions reductions from a specific option that could be achieved cost effectively, given prevailing circumstances (i.e. a market value of CO2 reductions and costs of other options).

Economically feasible under specific conditions
A technology that is well understood and used in selected commercial applications, such as in a favorable tax regime or a niche market, processing at least 0.1 MtCO2/yr, with a few (less than five) replications of the technology.

EGR
Enhanced gas recovery: the recovery of gas additional to that produced naturally by fluid injection or other means.

Emission factor
A normalized measure of GHG emissions in terms of activity, e.g., tons of GHG emitted per ton of fuel consumed.

Emissions credit
A commodity giving its holder the right to emit a certain quantity of GHGs (q.v.).

Emissions trading
A trading scheme that allows permits for the release of a specified number of tons of a pollutant to be sold and bought.

Endothermic
Concerning a chemical reaction that absorbs heat, or requires heat to drive it.

Enhanced gas recovery
See EGR.

Enhanced oil recovery
See EOR.

Entrained flow
Flow in which a solid or liquid, in the form of fine particles, is transported in diluted form by high velocity gas.

Entrainment gas
The gas employed in entrained flow (q.v.).

EOR
Enhanced oil recovery: the recovery of oil additional to that produced naturally by fluid injection or other means.

Euphotic zone
The zone of the ocean reached by sunlight.

Evaporite
A rock formed by evaporation.

Exothermic
Concerning a chemical reaction that releases heat, such as combustion.

Ex-situ mineralization
A process where minerals are mined, transferred to an industrial facility, reacted with carbon dioxide and processed.

Exsolution
The formation of different phases during the cooling of a homogeneous fluid.

Extended reach well
Borehole that is diverted into a more horizontal direction to extend its reach.

Extremophile
Microbe living in environments where life was previously considered impossible.

 

 
 
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