title: Mercury transportation in soil via using gypsum from flue gas desulfurization unit in coal-fired power plant.
abstract: The mercury flux in soils was investigated, which were amended by gypsums from flue gas desulphurization (FGD) units of coal-fired power plants. Studies have been carried out in confined greenhouses using FGD gypsum treated soils. Major research focus is uptakes of mercury by plants, and emission of mercury into the atmosphere under varying application rates of FGD gypsum, simulating rainfall irrigations, soils, and plants types. Higher FGD gypsum application rates generally led to higher mercury concentrations in the soils, the increased mercury emissions into the atmosphere, and the increased mercury contents in plants (especially in roots and leaves). Soil properties and plant species can play important roles in mercury transports. Some plants, such as tall fescue, were able to prevent mercury from atmospheric emission and infiltration in the soil. Mercury concentration in the stem of plants was found to be increased and then leveled off upon increasing FGD gypsum application. However, mercury in roots and leaves was generally increased upon increasing FGD gypsum application rates. Some mercury was likely absorbed by leaves of plants from emitted mercury in the atmosphere.
authors: Institute for Combustion Science and Environmental Technology, Western Kentucky University, 2413 Nashville Rd, Bowling Green, Kentucky 42101, USA.
authors: Kelin
authors: K
authors: Wang
authors: Institute for Combustion Science and Environmental Technology, Western Kentucky University, 2413 Nashville Rd, Bowling Green, Kentucky 42101, USA.
authors: William
authors: W
authors: Orndorff
authors: Institute for Combustion Science and Environmental Technology, Western Kentucky University, 2413 Nashville Rd, Bowling Green, Kentucky 42101, USA.
authors: Yan
authors: Y
authors: Cao
authors: Institute for Combustion Science and Environmental Technology, Western Kentucky University, 2413 Nashville Rd, Bowling Green, Kentucky 42101, USA.
authors: Weiping
authors: W
authors: Pan
mesh_terms: D002133:Calcium Sulfate; D003031:Coal; D005740:Gases / Q000737:chemistry*; D008628:Mercury / Q000737:chemistry*; D010944:Plants / Q000737:chemistry; D011210:Power Plants; D012989:Soil Pollutants / Q000737:chemistry*; D013455:Sulfur / Q000737:chemistry*; D014867:Water
chemical_list: D003031:Coal; D005740:Gases; D012989:Soil Pollutants; D014867:Water; D013455:Sulfur; D008628:Mercury; D002133:Calcium Sulfate