Steel, by BOS process

Basic Oxygen Steelmaking (BOS) process produces steel from molten iron (pig iron), scrap iron, oxygen, energy, and additives, such as lime. Besides the steel, the BOS process produces gases such as CO, CO2, particulate matter (0.005 lb per lb of steel), as well as slag (about 0.1 lb per lb of steel), and other pollutants. The BOS plants use, in average, about 30% of recycled steel, and 70% of newly produced iron.

Impact of one pound
of "Steel, by BOS process":

Overall impact (CEII): 1358.66
Depletion (DI): 373.99	Pollution (PI): 1368.98	Entropy (EI)): 0.62

How the environment impact was calculated:

Production:

Requires:
Resource or Item	Amount	Unit	Depletion (DI)	Pollution (PI)	Entropy (EI)	Total Impact (CEII)
Iron, raw (pig iron)	0.7	pound	344.99	996.2	0.55	989.34
Electricity, average	0.1	kWh	23.76	38.5	0.03	38.33
Quarried materials	0.05	pound	0.31	0	0	0
Oxygen, industrial	0.083	pound	4.93	7.99	0.01	7.95

Releases:
Resource or Item	Amount	Unit	Depletion (DI)	Pollution (PI)	Entropy (EI)	Total Impact (CEII)
Recycled waste	-0.3	pound	-0	-0	-0	-0
Particulate matter (PM)	0.005	pound	0	321.3	0	318.09
Landfilled waste	0.1	pound	0	3.57	0	3.53
Carbon dioxide pollution	0.04	pound	0	1.43	0	1.41
Dissipation	0.1	kWh	0	0	0.03	0

Use:

Requires:
Resource or Item	Amount	Unit	Depletion (DI)	Pollution (PI)	Entropy (EI)	Total Impact (CEII)
			0	0	0	0

Releases:
Resource or Item	Amount	Unit	Depletion (DI)	Pollution (PI)	Entropy (EI)	Total Impact (CEII)
			0	0	0	0

Disposal:

Requires:
Resource or Item	Amount	Unit	Depletion (DI)	Pollution (PI)	Entropy (EI)	Total Impact (CEII)
			0	0	0	0

Releases:
Resource or Item	Amount	Unit	Depletion (DI)	Pollution (PI)	Entropy (EI)	Total Impact (CEII)
			0	0	0	0

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Steel, by BOS process

Definitions