Encyclopedia of Environmental Science and Engineering, Volume I and II

AIR POLLUTION SOURCES 97

TABLE 14

National Anthropogenic Mercury Emissions (short tons/year)

Source Category Mercury Activity Year

Area Sources

Electric Lamp Breakage 1.5 1989

Laboratory Use 0.8 1992

Dental Preparations 0.8 1992

Subtotal 3.1

Combustion Point Sources

Utility Boilers 54.5 1990

Commercial/Industrial Boilers 29.0 1992

Residential Boilers 3.5 1991

Municipal Waste Combustors 55.0 1991

Medical Waste Incinerators 64.7 1991

Sewage Sludge Incinerators 1.8 1990

Crematories 0.4 1991

Wood-fired Boilers 0.3 1980

Subtotal 209.2

Manufacturing Sources

Chlor-alkali Production 6.5 1991

Cement Manufacturing 6.5 1990

Battery Production 0.02 1992

Electrical Apparatus Manufacturing 0.46 1992

Instrument Manufacturing 0.5 1992

Secondary Mercury Production 7.4 1991

Carbon Black Production 0.25 1991

Primary Lead Smelting 9.0 1990

Primary Cooper Smelting* 0.7 1992

Lime Manufacturing 0.7 1992

Fluorescent Lamp Recycling* 0.006 1993

Subtotal 32.0

TOTAL 244.3

* Emissions are estimated for only one source, which is scheduled to cease

operations by March 31, 1995; nationwide estimates are expected to be

higher.

Note(s): Mercury was phased out of paint use in 1991.

Insufficient information was available to estimate emissions for the

following source categories:

• Mobile sources;


• Agricultural burning (one study estimates 0.04 tons/year from
  preharvest burning of sugarcane in Florida everglades area);


• Landfills;


• Hazardous waste incinerators;


• Mercury compounds production;


• By-product coke production; and


• Petroleum refining.
  Source(s): Draft Mercury Study Report to Congress, Volume II: Inventory of
  Anthropogenic Mercury Emissions in the United States. U.S. EPA, Office of
  Air Quality Planning and Standards, Internal Review Draft, 1995.

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