University of North Texas Digital Library (University of North Texas) · 1994 · 17 citations · 0 references
Open access
EngineeringAir QualityChemistryMineral ProcessingSorption CoolingChemical EngineeringEnvironmental ChemistryEnvironmental Analytical ChemistryGas ControlMercury BiogeochemistryAnalytical ChemistryFlue GasesPollution ReductionClean Coal TechnologyActivated Carbon DecreaseMercury ChemistryMercury EmissionsExperimental EvaluationEnvironmental EngineeringEnvironmental RemediationWater PurificationBusinessActivated CarbonAir Pollution
The results and conclusions to date from the Argonne research program on air toxics (mercury) control can be summarized as follows: (1) Mercury emissions from coal-fired combustors are generally in the range of 10--70 {mu}g/m{sup 3} and are highly variable. (2) Existing FGC technologies are only partially effective in controlling mercury emissions. (3) Lime hydrates, either regular or high-surface-area, are not effective in removing mercury. (4) Mercury removals are enhanced by the addition of activated carbon. (5) Mercury removals with activated carbon decrease with increasing temperature, larger particle size, and decreasing mercury concentration in the gas. (6) Chemical pretreatment (with sulfur or CaCl{sub 2}) can greatly increase the removal capacity of activated carbon.