Metals emissions from landfill gas combustion

Conference · Wed Dec 31 04:00:00 EST 1997

OSTI ID:353641

Carpenter, J E; Gammie, L A ^[1]

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1. Environmental Risk Ltd., Bloomfield, CT (United States)

Metals emissions from an enclosed ground flare combusting landfill gas were measured in five separate testing programs over a two-year period. The metals measured were arsenic, barium, cadmium, chromium, lead, mercury, selenium and silver. Beryllium, nickel and manganese were added to the last sampling program. The mass emission rates determined from two of the sampling programs were used as input to air dispersion modeling to predict worst-case ambient concentration levels in a nearby neighborhood. The modeled off-site concentrations were below state regulatory levels. The landfill is located in Connecticut, where maximum allowable stack concentration (MASC) limits are in place for hazardous air pollutants for point sources. These limits are calculated based on the stack height, the exhaust flow, the distance to nearest property line and the state-defined Hazard Limiting Value (HLV) for each hazardous air pollutant. Not all metals were detected; nevertheless, performing the MASC calculation for those metals at their standard analytical detection limit was not sufficient to demonstrate compliance. Sampling and analytical strategies for decreasing the detection limit are discussed. The contribution of the reagent blanks was in some cases significant. Compliance was demonstrated for all metals using analytical techniques with lower detection limits and incorporating blank corrections.

• OSTI ID: 353641
• Report Number(s): CONF-970677--
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
AIR POLLUTION MONITORING
ARSENIC
BARIUM
BERYLLIUM
CADMIUM
CHROMIUM
COMBUSTION
DEGASSING
EMISSION
LEAD
MANGANESE
MATHEMATICAL MODELS
MERCURY
METHANE
NICKEL
SANITARY LANDFILLS
SELENIUM
SILVER